Answer:
Stigma
Explanation:
Angiosperms is pollination by wind,insects and water.
the rely on either the three to transfer their pollen grains from one plant to another and stick in their sticky stigma.
In angiosperms, pollination is the transfer of pollen from the anther to the stigma of a flower of the same or another plant of the same species, which then paves the way for fertilization.
Explanation:In angiosperms, or flowering plants, pollination refers to the transfer of pollen from the anther (the part of the flower that produces pollen) to the stigma of the same or another flower of the same species. The stigma is the part of a flower where the pollen germinates. It's part of the pistil, which also comprises of the style and the ovary. The process facilitates fertilization as it lays the pathway for the sperm to reach the ovule, ensuing the production of seeds. Pollination can occur via various vectors, including wind, water, and animals.
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What structure in the earthworm has a similar function as the human heart? Explain your answer.
Answer:
Aortic arches
Explanation:
Earthworms are grouped in the phylum Annelids and there body is segmented which resemble many little rings attached together. Similarly, earthworms possess circulatory system and circulate there blood through vessels. Thus, there are three (3) vessels that circulate bloods in earthworm which includes: ventral blood vessels, aortic arches and dorsal blood vessels. However, aortic arches functions like human heart thereby having the responsibility to circulate or pump blood into the ventral and dorsal blood vessels. Furthermore, the aortic arches are known to be the main portion of the artery that bends between ascending and descending aorta.
Answer:
aortic arches
Explanation:
An earthworm circulates blood exclusively through vessels. There are three main vessels that supply the blood to organs within the earthworm. These vessels are the aortic arches, dorsal blood vessels, and ventral blood vessels. The aortic arches function like a human heart.
explain how rRNA is involved in translation
rRNA serves as the place where the mRNA gets read. Also where translation takes place...
Also I’m done. Lots of biology today for me! Have a good day <3
A DECREASE in the density of a sample of a gas inside a balloon could be caused by A) putting the balloon in the refrigerator. B) taking the balloon outside on a hot day. C) shaping the balloon into the shape of a dog. D) taking the balloon down to the bottom of the ocean.
Answer:
B
Explanation:
When a mass of air is heated it becomes less dense. This is why a hot air balloon rises in the atmosphere. It is also the same reason why hot air rises and the moisture in it condenses to form clouds. The cooler less dense air mass moves downards (in some convection currents fashion) in to replace the hot rising air.
Answer:
B) taking the balloon outside on a hot day.
Explanation:
All of the outer planets are much larger than the inner planets.
Answer:
True...
Explanation:
The outer planets are further away, larger and made up mostly of gas. The inner planets (in order of distance from the sun, closest to furthest) are Mercury, Venus, Earth and Mars.
The inner planets are much smaller than the outer planets and because of this have relatively low gravity and were not able to attract large amounts of gas to their atmospheres
If someone is blood type O, then their blood contains antibodies for which antigens?
A. A
B. Neither A nor B
C. B
D. Both A and B
Answer:
Blood type O person will have no antigens on the surface of RBC, but they do contain anti-A and anti-B antibodies in their plasma.
Explanation:
Since there are no antigens on the surface of RBC, they become universal donors. Blood grouping is generally based on two things one is the presence of antigens on the surface of RBC and the other thing is presence of antibodies in plasma. Blood type A person will have A antigens on the surface of RBC and anti-B antibodies in their plasma. That is why they cannot accept blood from blood type B. Vice versa is the case of blood type B. In case of people with blood type AB, they contain both the antigens A and B on RBC surface but do not contain any antibodies. That is why they are called universal acceptors.
Why did scholars and the general public alike refuse to accept Copernicus’s heliocentric model? HELPP
Answer:
Due to the fact that they had believed that the world was the center of the universe and refused to believe otherwise.
Although it was more of a biblical Catholic Church going against the model, the general public was mainly dictated by the Catholic Church. Since this was introduced in a religious period, it was opposed because it basically stated that the scripture was wrong. Scientists also were looked down upon at the moment as their findings would basically instigate that the Church’s teaching was incorrect.
The lactose operon, as well as other operons with genes that encode enzymes for the utilization of different carbohydrates, is regulated by the concentration of CRP-cAMP in the cell. One of the consequences is that the cell can have a hierarchy of preferences for the utilization of various carbohydrates. Glucose is at the top of the hierarchy, and when glucose is present in sufficient concentration, the level of CRP-cAMP in the cell is low, and none of the other operons are fully induced even if their associated carbohydrate is present. As the glucose is depleted, the level of CRP-cAMP increases, and each operon in turn becomes fully inducible according to its ranking in the hierarchy. The least preferred carbohydrates require the highest concentration of CRP-cAMP to be fully induced. Suppose the order of preference for sugars were, from most to least preferred after glucose, maltose, lactose, cellobiose, trehalose, and raffinose. Which operon would require the highest level of CRP-cAMP to be fully induced
Answer:
raffinose
Explanation:
The least preferred carbohydrate requires the highest concentration of CRP-cAMP to be fully induced. Since the raffinose is the last in the hierarchy it will require the tho highest concentration of CRP-cAMP. On the other hand maltose would require the lowest level of CRP-cAMP to be fully induced.
CRP is an important regulatory protein in bacteria, which binds to the promoters of the bacteria genes it controls and activates the transcription of the gene. CRP can bind for the promoter only when it is activated by cAMP.
How does active transport differ from all other forms of transportation?
A. It shifts from high to low
B. It requires energy
C. It maintains homeostasis
D. It creates an equilibrium shift
Answer:
. It shifts from high to low
Explanation:
What happens in a male's body when he enters puberty? The testes start releasing testosterone. The testes start releasing progesterone. The ovaries start releasing testosterone. The ovaries start releasing progesterone.
The testes start releasing testosterone, the first one.
The first choice, the testes start releasing testosterone
In order to fit within a cell, DNA becomes more compact by
a. breaking apart into separate genes.
b. extending to form very long, thin molecules.
c. wrapping tightly around associated proteins.
d. being enzymatically changed into a protein.
The correct option is (c) wrapping tightly around associated proteins.
What is DNA condensation?DNA condensation refers to the process of compacting DNA molecules in vitro or in vivo. DNA tangling and damage are prevented during cell division by packing DNA into chromosomes. For every cell's nucleus to fit within, DNA is compactly packed. Histone proteins and DNA combine to form nucleosomes, which are compact loops.
Nucleosomes coil and stack together to form fibers called chromatin which, in turn, loops and folds with the help of additional proteins to form chromosomes. The genetic material's stability is ensured by the condensed DNA. But most of the time, DNA is only loosely bound to carry out physiological functions like translating proteins.
Thus, in order to fit within a cell, DNA becomes more compact by wrapping tightly around associated proteins.
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When you consume alcoholic beverages, impairment of your ability to safely operate a motor vehicle begins at the ______ sip of the alcoholic beverages?
Answer: First
Explanation: When you consume alcoholic beverages, impairment of your ability to safely operate a motor vehicle begins at the "FIRST" sip of the alcoholic beverages?
Impairment of the ability to safely operate a motor vehicle begins with the first sip of alcohol, due to its effects on judgment, coordination, and reaction times, critical for driving. The legal BAC limit is 0.08% but impairment starts before this level.
When you consume alcoholic beverages, impairment of your ability to safely operate a motor vehicle begins at the first sip of the alcoholic beverages. Alcohol intoxication affects individuals differently based on a variety of factors including age, sex, body weight, and overall health, but it is important to understand that any amount of alcohol can impair judgment, coordination, and reaction times, all of which are critical for safe driving. The legal limit for Blood Alcohol Concentration (BAC) in most U.S. states is 0.08%, but impairment starts well before reaching this level. Drinking and driving is dangerous and illegal because alcohol significantly increases the risk of accidents.
At a meal, you are served a hamburger with cheese, onions, and beef on a bun. what ingredients represent the most carbohydrates? select all that apply.
the ingredients that have the most carbs, are bread and starches. in hamburger, breadcrumbs or another binding agent, oatmeal, rice etc. are also used to keep the meat from breaking apart.
Answer:
Cheese and Bun
Explanation:
Bun and cheese have more carbs than the other components of the hamburger. Bread has a lot of carbohydrates that are part of starch. Cheese also has some carbohydrates from milk, such as lactose.
Onions also have a certain amount of carbohydrates, but in a very small amount compared to previous ingredients.
Meat sometimes have products derived from starch or other meat-binding compounds, but they do not have a significant amount of carbohydrates.
Gjerde says, "we used to think the solution to pollution was dilution." what do you think she means by this and what example does she provide?
Answer:
Explanation:
I can give you the meaning. Likely in your notes somewhere is her example. I found out that she is a real person.
If you were using the first insecticides, they were made so that they were water soluble. When you were finished spraying, you put water into a large container before dumping it onto the ground. That way the concentration was reduced. The problem was, the insects mutated and the insecticide became ineffective, so you had to make stronger ones until today (herbicides that is plant killers) there really is no good way to keep these things out of the water table. The manufacturers assure us that we will not be harmed by Roundup. The courts in California are not so sure. If you want more, you should search out the history of roundup.
The example I think is the best example is disposable diapers. They are the most environmentally unfriendly thing I can think of.
Answer:
We think that the trash will eventually just go away, the problem will suddenly stop and disappear. Her example is “garbage discharge, something you would think just simply goes away”.
*WARNING*
Do not use this answer word for word as you will be caught for plagarism!
Explanation:
"We used to think the solution to pollution was dilution". This means we used to believe that the solution to pollutin was waiting. Waiting for the trash amount to reduce or disappear.
What are some of the functions of photosystem i and photosystem ii in plants?
Answer:
Photosystem I (PS-I )and photosystem II (PS-II ) are two multi-protein complexes. These complexes contain the pigments used to absorb, harvest and catalyze the photons and light energy in the photosynthetic reactions. The main purpose of photosynthesis reactions to produce high chemical energy compounds.
Photosystem I and II are different from each other because of their absorbing wavelength of light. PS-I absorbs the longer wavelength of light than PS-II.
PS-I plays the major role in the production of high energy carriers ATP and NADPH using light energy (700 nm).
PS-II plays its function in the hydrolysis of water and ATP synthesis using light energy (680 nm).
Photosystem II (PSII) absorbs light energy and uses it to excite and remove electrons from water, causing water to split and release oxygen. The excited electrons are then passed to Photosystem I (PSI), which also absorbs light to re-energize the electrons before they reduce NADP+ into NADPH. Both systems contribute to ATP production and eventually enable glucose synthesis in the Calvin Cycle.
Explanation:The photosystems I and II are crucial components of the photosynthetic process in plants, playing vital roles in the conversion of light energy into chemical energy. Both systems are embedded in the thylakoid membrane of chloroplasts in plants.
Photosystem II (PSII) functions first in the process and its main role is to absorb light energy and use it to excite electrons, which are removed from water molecules, causing them to split and release oxygen. This is known as photolysis.
Following this, the excited electrons are passed along the electron transport chain to Photosystem I (PSI). PSI also absorbs light energy and uses it to re-energize the electrons, before they are used to reduce NADP+ into NADPH. Both PSI and PSII contribute to the production of ATP through chemiosmosis.
Thus, the ultimate products of the light-dependent reactions involving these photosystems are ATP, NADPH and oxygen, which are used in the next stage of photosynthesis, the Calvin Cycle, to produce glucose.
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Each of the following is a function of the integumentary system except:
A. synthesis of vitamin C.
B. maintenance of body temperature.
C. detection of sensations.
D. protection of underlying tissue.
E. excretion of salts and wastes.
Answer:
A. synthesis of vitamin C.
Explanation:
Integumentary system refers to the skin and its appendages. So it doesn't have the role to synthesis vitamin C, but it can synthesis vitamin D through exposure to UV light. The major role of integumentary system is protective role (immuno defense-from infections, dehydration, temperature changes, protection of underlying tissue etc). It also contains many receptors (for pain, touch, temperature change) that detect environmental changes.
Out of the given options, Vitamin C synthesis is not a function of the integumentary system. The integumentary system is involved in the synthesis of Vitamin D, maintaining body temperature, detecting sensations, providing protection to underlying tissues, and excreting salts and waste.
Explanation:The integumentary system, comprising the skin, hair, nails, and associated glands, performs several distinct functions, but not all listed in the options above. The function that does not pertain to the integumentary system is the A. synthesis of vitamin C.
The integumentary system participates in the synthesis of Vitamin D, not Vitamin C. This synthesis happens when your skin is exposed to sunlight. Functions like maintenance of body temperature (thermoregulation), the detection of sensations due to nerve endings in the skin, protection of underlying tissue by acting as a physical barrier, and excretion of salts and wastes, particularly via sweat, are indeed functions of the integumentary system.
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The map above shows some of Earth's plate tectonic boundaries.
Based on the map, volcanic activity would most likely be found at −
A) Location W
B) Location X
C) Location Y
D) Location Z
Final Answer:
Volcanic activity would most likely be found at Location Y based on Earth's plate tectonic boundaries.
The correct option is C.
Explanation:
Location Y corresponds to the convergence of tectonic plates, specifically a subduction zone where one plate sinks beneath another. Subduction zones are often associated with intense volcanic activity due to the melting of the descending plate as it moves into the Earth's mantle. This melting generates magma that can erupt through volcanoes, creating volcanic activity.
Locations W, X, and Z are not situated along plate boundaries that typically exhibit the intense volcanic activity associated with subduction zones. Location W represents a divergent boundary, X indicates a transform boundary, and Z depicts a convergent boundary with continental collision, but these boundaries are less prone to volcanic activity compared to subduction zones.
So, the correct option is C.
Which types of mutation are possible thanks to the redundant nature of the genetic code?
Cancer is a type of harmful mutation.
Name the 4 types of of coal and their average carbon value
Answer:
The four types of coal are peat, lignite, bituminous, and anthracite.
Explanation:
The four types of coal are anthracite, bituminous, subbituminous, and lignite. Anthracite has the highest carbon content and energy output, while lignite has the lowest. Bituminous coal is most abundant in the U.S. but has a high sulfur content.
Coal is a combustible sedimentary rock categorized into four main types based on the carbon content and energy potential. The four types of coal, in order of decreasing energy content and carbon value, are:
Anthracite coal: It has the highest carbon content, nearly 100%, and thus provides the most energy upon combustion.
Bituminous coal: This type has approximately 85% carbon and is the most abundant in the United States, although it contains the highest sulfur content.
Subbituminous coal: Has a lower carbon content than bituminous coal.
Lignite coal: Also known as brown coal, it has the lowest carbon content at about 50% and the highest water content, making it the least energy-dense of the four types.
With increasing carbon content, the energy released from combustion also increases. As such, anthracite is used for metallurgical refining due to its high carbon and low sulfur content, while lower-ranked coals like lignite and subbituminous have reduced carbon content and energy output.
The Milky Way is ____
A) a galactic supercluster
B) a spiral galaxy
C) an irregular galaxy
D) an elliptical galaxy
Answer:
The Milky Way is a spiral galaxy. - B)
Answer:The Milky Way is _____.
an elliptical galaxy
a galactic supercluster
an irregular galaxy
a spiral galaxy
Explanation:
a spiral galaxy
The milky way is a barred spiral galaxy because its appearance conforms to the classification of galaxies given by Hubble.
Which of the following occurs in the P site of the ribosome during translation?None of the other answer options is correct.An incoming charged tRNA binds to this site.An uncharged tRNA is ejected from this site as the ribosome slides to the next codon.The tRNA carrying the growing polypeptide moves to this site as the ribosome slides to the next codon.
Answer:
The tRNA carrying the growing polypeptide moves to this site as the ribosome slides to the next codon.
Explanation:
During the process of translation, ribosomes play a major role in connecting mRNA codons with tRNA anticodons. Ribosomes are composed of two subunits which consist ofproteins and rRNA. The tree sites of ribosomes are:
P site or peptidyl site-this site binds to the tRNA which holds the growing polypeptide chain.A site or acceptor site-this is a site of peptide bond formation between the growing polypeptide and the next incoming amino acidE site or exit site-the site for the final binding of t-RNAIf you make fried chicken then put it in the oven what will happen?
A) get more crunchy
B) get soggy
Answer:
Actually, it would get soggy. As the heat goes in, the moisture from the oven is sucked into the chicken. So, because the moisture is sucked into the chicken, it gets soggy.
Explanation:
Fried chicken placed in the oven may become more crispy if done at the right temperature and duration but could potentially get soggy if overcooked or exposed to moisture.
The moisture content and oxidation are important for determining the texture and quality of the final fried product.
The correct option is 'B'.
If you fry chicken and then put it in the oven, the result can vary based on several factors, including the temperature and duration of oven-cooking. Generally, putting fried chicken in the oven at a moderate to high temperature can help to dry out any excess oil and make the skin more crispy. This is due to the fact that as water turns into vapor it moves out of the chicken by convection, and the surrounding heat helps to crisp up the already fried coating.
On the other hand, if the oven temperature is too low or the chicken is left in for too long, the skin might potentially get soggy because of the steam from the chicken's internal moisture or any covering that traps moisture could soften the crust.
The final moisture content of fried foods is vital for crispiness. Typically, a fried product is considered crispy if the moisture content is less than 5% by weight. Hence, oven-finishing fried foods should be done at the correct temperature and for the right duration to maintain or enhance crispiness.
Oxidation is another aspect to consider. When fried foods are exposed to the air, they can become rancid due to oxidation. However, if they are consumed quickly or stored properly, this is less of a concern.
What type of cell is prepared to live on its own?
A. Viral cell
B. Unicellular cell
C. Multicellular cell
D. Eukaryotic cell
Answer:
unicelluar
Explanation:
Answer: Unicellular
Explanation: A unicellular cell is itself capable of surviving in the environment without being dependent on any other cell.
A single can perform various cell functions such as ingestion, digestion, respiration, reproduction and excretion by its own.
It does not needs cell to cell interaction for its survival so, unicellular cells are prepared to live their life on its own.
Which of the following statements explains why there is an elastic layer found in arteries, but not veins? The total length of arteries in the body is more than the total length of veins, and the elastic layer helps push the blood over the longer length. Valves present in veins provide a mechanism for withstanding high blood pressure flow going through veins. Arteries are thicker than veins, and the elastic layer is necessary to support the additional weight of arteries. Blood pressure is higher in arteries than veins, and the elastic layer helps maintain the structure of the artery.
Answer:
Blood pressure is higher in arteries than veins, and the elastic layer helps maintain the structure of the artery.
Explanation:
Blood pressure in arteries is higher because the arteries are the ones in charge of taking the blood that is freshly oxygenated from the hearth and into the body, this means that they have to endure a higher pressure since the blood that they carry is being pushed by the hearth at a certain rate, the veins need to be elastic so the pressure won´t tear them.
Diana jones is 5'4" and weighs 145 pounds. would the anesthetic choices be the same for diana as they would be for a 6'3" 210 lbs man or a 4'6", 65 lb 10 year old girl? why or why not?
Answer:
Propofol (another name Diprivan) can be used for Diana's surgery. It is a sedative or anesthesia commonly used for children and adults. Studies show that there were no significant differences in dose requirements based on sex or age, except for the too elderly. The difference in dosing considering different body weights were not statistically significant also. The same dose is safe
( 0.1-0.15 mg/kg/min IV for 3-5 min) for Diana, the 210 lb man or a 10-year-old girl. However, the dose was higher in patients with bradycardia and hypotension.
"The anesthetic choices for Diana Jones, a 5'4"" and 145 pounds individual, would not necessarily be the same as those for a 6'3"" and 210 lbs man or a 4'6"", 65 lb 10-year-old girl. The primary reasons for this are differences in body composition, metabolism, and the pharmacokinetics and pharmacodynamics of anesthetic drugs.
Anesthetic dosing based on weight but influenced by age, height, body composition, cardiac output, liver/kidney function, and health.
Taller, heavier individuals may need higher doses due to larger blood volume and lean mass.
Smaller, lighter individuals require lower doses due to smaller blood volume and mass.
Children require different dosing due to distinct metabolism and sensitivity.
Anesthetic choice influenced by medical history, surgery type, and procedure duration.
Tailored anesthetic plans consider weight, height, age, and physiological factors.
Anesthetic choices for each patient, like Diana Jones, are unique based on these considerations.
Many identical copies of genes cloned in bacteria are produced as a result of _____.
Answer:
plasmid replication and bacteria replication
Explanation:
Cloning of DNA is a process used in molecular biology to replicate DNA fragments of interest. Enzymes required for this process are restriction enzymes which cut both, DNA of interest and bacterial plasmid that is used as vector and DNA ligases which fragment into plasmid. Recombinant plasmid is inserted into bacteria via transformation.
At 10 a.m. on June 12, two joggers discover a body along a running path in a park. The body is 20 feet from a tree beside the path. The body is partially buried. The weather is hot and humid. The body has a gray, cheesy-like appearance. Which information should be noted for the coroner?
Choose all answers that are correct.
time of discovery of the body *
location of the body *
the weather conditions
the appearance of the body *
Asterisks indicate my answers. Thanks for the help.
Answer:
the weather conditions
Explanation:
if the body is out in the sun then yes it will look like a grey cheesy so it will be the last one
Answer:the weather the positon the gray cheesy-like apperance
Explanation:that is a sign of rigor
What is the water molecule's characteristic "bent" shape due to?
A. Single covalent bonding
B. tetrahedral bonding and 2 pairs of non-bonding electrons
C. nonpolar covalent bonding
D. ionic bonding
Answer:
B
Explanation:
A water molecule is made up of an oxygen molecule bonded covalently to two hydrogen atoms. Each of the hydrogen atoms shares an electron pair with the oxygen stabilizing their electron configurations to 2 and that of oxygen to 2.8. The oxygen atom will, therefore, have two extra pairs of unbonded electrons that occupy space and repel each other include the bonding pair electrons. Due to these repulsive interactions, all these electron pairs arrange themselves into a tetrahedral geometrical shape in space with the angles between the pairs being 109.5 degrees.
Which statement about the deepest parts of the ocean floor is true? Algae thrive. Animals live in constant darkness. Nekton are more common than benthos. Temperatures are moderate to high.
which statement about the deeper part of the ocean floor is true itake animal live in constant darkness
Answer:
Animals live in constant darkness.
Explanation:
The deepest part of the ocean floor does not receive sunlight as solar radiations cannot penetrate to such depth. This part is inhabited by benthos. Since sunlight do not reach to the deepest part of the ocean floor, these organisms are adapted to live in constant darkness.
Absence of sunlight also leads to comparatively colder temperature conditions in the region.
What is the primary function of the endocrine system
Answer:
To maintain body homeostasis
Explanation:
The endocrine system consists of the endocrine glands that release hormones directly int the blood. Those hormones bind to their receptors on the target cells and thus regulate their function. The major glands are:
pineal gland-releases melatonin, controls sleep cycle
pituitary gland-control growth, blood pressure, thyroid glands and metabolism etc.
pancreas-secretes insulin and glucagon, control of blood sugar levels
ovaries, testes-reproductive role (release female and male hormones)
thyroid gland-controls metabolism and protein synthesis
parathyroid gland-controls Ca levels
hypothalamus-connects nervous and endocrine systems, controls other glands
adrenal glands-release adrenalin and steroid hormones.
The endocrine system functions mainly to control body processes through the production, secretion, and regulation of hormones. These hormones maintain the body's homeostasis and play crucial roles in growth, metabolism, sexual development, digestion, and other bodily processes. The endocrine system works in harmony with the nervous system to adapt to different environmental conditions.
Explanation:The primary function of the endocrine system is to control body processes by production, secretion, and regulation of hormones. These hormones, secreted primarily by endocrine system cells, tissues, and glands such as the pituitary, thyroid, parathyroid, adrenal, pineal glands, and pancreas, serve as chemical 'messengers' that function in cellular activity and maintain the body's homeostasis. They play significant roles in growth, metabolism, sexual development, digestion, regulation of blood glucose levels, and other normal bodily processes.
The endocrine system adapts to specific environments and conditions. For example, in organisms that undergo metamorphosis, the transformation process, like from a tadpole to a frog, is controlled by the endocrine system.
It is noteworthy that the endocrine system and the nervous system work together to maintain homeostasis and adjust physiological activity when external or internal environmental conditions change. Even different body tissues, such as bone, adipose tissue, heart, kidneys, stomach, small intestine, liver, skin, ovaries, and testes have secondary endocrine functions.
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What evidence is used to determine the branching sequence of an evolutionary tree?
Anatomical or molecular homologous structures
The evidence that is used to determine the branching sequence of an evolutionary tree is : Anatomical homologous structures
Anatomical homologous structuresAnatomical homologous structures are structures which are similar in different species whom share the same ancestor but have evolved divergently overtime. Anatomical homologous structures are an evidence to show or determine the brancing sequence which occurs in an evolutionary tree.
Hence we can conclude that The evidence that is used to determine the branching sequence of an evolutionary tree is : Anatomical homologous structures.
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