Answer:
B. develops legs
Explanation:
I took the quiz
Which of these would BEST describe what would happen to a cell in a time of low nutrient supply?
a. The cell's growth would speed up significantly, leading to longer periods of time between cell division.
b. The cell's growth would slow down significantly, leading to longer periods of time between cell division. Eliminate
c. The cell's growth would speed up significantly, leading to shorter periods of time between cell division.
d. The cell's growth would slow down significantly, leading to shorter periods of time between cell division.
1. Pigs have 38 chromosomes. Cells created during mitosis will have _____.
A<19 chromosomes
B<38 chromosomes
C<76 chromosomes
2.Dominant genes _____.
A
B
C
B
3.Humans have 46 chromosomes. A human egg cell has _____.
A<23 chromosomes
B<46 chromosomes
C<92 chromosomes
4.How can mutation positively help organisms?
A
B
C
Answer:
1.A:19 3.A:23
Explanation:
I'm sorry but i do not know what 2. and 4 means.
I know 1. and 3. because it was in biology.
Final answer:
1. Cells created during mitosis will have 38 chromosomes. 2. Dominant genes are expressed when there is at least one copy of the dominant allele present. 3. A human egg cell will have 23 chromosomes. 4. Mutation can positively help organisms by leading to the development of new traits and increasing genetic diversity.
Explanation:
1. Cells created during mitosis will have B<38 chromosomes because mitosis is a type of cell division that results in the production of two daughter cells, each with the same number of chromosomes as the parent cell. Therefore, if pigs have 38 chromosomes, the cells created during mitosis will also have 38 chromosomes.
2. Dominant genes can be represented by the letter B. Dominant genes are expressed when there is at least one copy of the dominant allele present in the genotype. This means that the dominant gene will be observed in the phenotype, even if there is also a recessive gene present.
3. A human egg cell will have A<23 chromosomes. This is because during meiosis, the process of cell division that produces gametes, the number of chromosomes is halved. As humans have 46 chromosomes in their somatic cells, the egg cell will have half that number, which is 23 chromosomes.
4. Mutation can positively help organisms in several ways. For example, a mutation can lead to the development of new traits, which can provide an advantage in a changing environment. Mutations can also increase genetic diversity within a population, which can enhance the ability of the population to adapt to different conditions.
A membrane which limits the type of molecules which will pass through it is called .
A membrane which limits the type of molecules which will pass through it is called a semi permeable membrane.
A semipermeable membrane is a membrane which can be biological or artificial, that will allow the movement of certain molecules through them by diffusion. Several factors such as pressure, concentration, temperature of the molecules on each side, and also the permeability of the membrane to each solute determine the rate of passage of the molecules.
Which is an example of a eukaryote? A) Euglena B) AIDS virus C) lactobacillus Eliminate D) cyanobacteria
Final answer:
The example of a eukaryote from the provided options is A) Euglena. Euglenophytes such as Euglena have a nucleus enclosed within a membrane, which is a defining characteristic of eukaryotic cells. The other options are either prokaryotes or viruses, which are not eukaryotes.
Explanation:
The example of a eukaryote from the given choices is A) Euglena. Eukaryotes are organisms whose cells have a nucleus enclosed within a membrane, along with various other specialized organelles. Euglenophytes, including Euglena, are unicellular, aquatic organisms that have characteristics of algae and fall under the domain Eukarya, possessing a distinct nucleus. In contrast:
B) AIDS virus (HIV) is not a eukaryote; it is a virus, which lacks a cell structure and is considered neither a prokaryote nor a eukaryote.C) Lactobacillus is a genus of bacteria, so it is a prokaryote.D) Cyanobacteria are also prokaryotes as they lack a nucleus and membrane-bound organelles.Therefore, the correct answer to the question is A) Euglena.
WILL UPVOTE ALL ANSWERS
A geologist's job includes:
determining the living organisms occupying an area
determining the chemicals cycling through an area
determining the history of an area
determining the magnitude of light in an area
in human excess blood glucose is stored in the liver and in muscle tissues in form of glycogen.glycogen is a long chain of glucose molecules bonded together.because of this glycogen is called a
The correct answer is that because of this glycogen is called a polysaccharide.
Hope this helps! :)
The plasma membrane, according to the fluid-mosaic model is composed mainly of What and Proteins
Prokaryotes and eukaryotes are similar in all of these aspects except
Answer:
the answer is The way in which the genetic material is found.
Explanation:
The main difference between prokaryotic and eukaryotic cells is that in prokaryotic cells, the genetic material is not separated from the cytoplasm since they lack a defined nucleus, so the genetic material is dispersed in its cytoplasm, while the eukaryotes present the genetic material organized in chromosomes surrounded by a membrane that separates them from the cytoplasm.
Glucose will pass through a cell membrane with the aid of what?
What are body parts similar in origin and structure called
In humans, a combination of cx chromosomes results in a female zygote and that of xy results in male zygote from whom does a male zygote inherit an X chromosome
The average corn yield per acre has _______ during the last forty years.
The average corn yield per acre has doubled during the last forty years.
corn yields are coming in anywhere from 130 bushels per acre (bu/acre) to 260 bu/acre, as an stadistic data.
Population growth is limited by density-dependent factors such as _____.
predation and disease
volcanoes and earthquakes
droughts and floods
biotic and abiotic factors
The correct answer is predation and disease.
Density dependent factors are those factors, which are directly influenced by the density of a population. These factors directly influence the size and the growth of the population.
The predation and the disease are density dependent factors, as predation of a small density population would cause a significant decrease in number, so, predation is the limiting factor for the growth of the population. Same for diseases, the disease can affect most of the members of the population, and limiting its growth.
The changes in the environment and the natural calamities are density independent factor.
A chef chops vegetables into a bowl of water. Would you expect the vegetable slices to gain or lose water? Explain your answer in terms of water potential.
Imagine that you are an agri-science consultant to a large corporate farm that raises 7000 acres of wheat on a desert land adjoining the Mediterranean Sea. Just before the wheat matures, all the wells used for irrigation water run dry. The farm manager wants to irrigate the fields with water drawn from the Mediterranean. From previous tests, you know that the average solute potential of root tissue taken from the wheat fields is -11.13 bars. You test the seawater and determine its solute potential to be -24.26 bars. What will you advise the farm manager and why?
A marine clam is mistakenly added to a freshwater aquarium. What will happen to the clam and why?
When a chef chops vegetables into a bowl of water, the vegetable slices would gain water due to osmosis. The farm manager should advise against using seawater for irrigation as it would lead to dehydration of the wheat plants. When a marine clam is added to a freshwater aquarium, it would likely dehydrate and die.
Explanation:When a chef chops vegetables into a bowl of water, the vegetable slices would gain water due to the process of osmosis. Osmosis is the movement of water molecules from an area of lower solute concentration (higher water potential) to an area of higher solute concentration (lower water potential). In this case, the vegetables have lower solute concentration compared to the water in the bowl. Therefore, water will move into the vegetable slices, causing them to gain water.
Regarding the farm irrigation dilemma, the water potential of the seawater (-24.26 bars) is lower than the solute potential of the wheat field root tissue (-11.13 bars). To ensure water uptake by the wheat plants, the farm manager should advise against using seawater for irrigation. The lower water potential of seawater would create a water potential gradient that would lead to water moving out of the wheat plants, causing dehydration and potentially damaging or killing the crops.
When a marine clam is mistakenly added to a freshwater aquarium, the clam would likely dehydrate and die. The freshwater has a higher water potential compared to the marine clam's tissues, resulting in water moving out of the clam through osmosis. As a result, the clam would lose water and wouldn't be able to survive in the freshwater environment.
Learn more about Osmosis here:https://brainly.com/question/31028904
#SPJ11
What are chromosomes?
A. Strands of DNA wrapped around proteins
B. Any organism that contains DNA
C. The alleles that cause certain traits
D. A form of virus that infects cells
Which of the following two cycles are the most closely related in their role in sustaining life?
a.
carbon and nitrogen
b.
water and nitrogen
c.
carbon and oxygen
d.
nitrogen and phosphorus
The transmission electron microscope is most useful for
1. looking at the surface features of a virus
2. seeing animal tissue that is visible to the naked eye
3. studying the structures of a live paramecium
4. viewing a cell’s mitochondria in detail ...?
1. looking at the surface features of a virus
Explanation;Electron microscopes are types of microscopes that uses a beam of electrons instead of light to magnify objects up to 500,000 times the actual size. These microscopes have a higher resolving power than the light microscopes since they use electrons.There are two types of electron microscopes ; that is Scanning Electron Microscope and Transmission Electron Microscope. Transmission electron microscope are used for studying internal structures of cells. In these microscopes electromagnets are used to magnify the image by passing a beam of electrons through a thin specimen.Answer:
A looking at the surface features of a virus.
Explanation:
which statement best describes the relationship between the hypothalamus and the pituitary gland?
a. the anterior pituitary gland makes hormones that are released by the hypothalamus
b. the hypothalamus produces releasing hormones that promote the release of particular hormones from the anterior pituitary
c. the hypothalamus produces releasing hormones that promote the release of particular hormones from the posterior pituitary
d. the posterior pituitary sends nervous signals to the hypothalamus to prompt the release of hormones
The hypothalamus produces releasing hormones that stimulate or inhibit hormone secretion from the anterior pituitary; the posterior pituitary stores and releases hypothalamic-produced hormones.
Explanation:The correct answer to the question about the relationship between the hypothalamus and the pituitary gland is choice b. The hypothalamus produces releasing hormones that promote the release of particular hormones from the anterior pituitary. The anterior pituitary manufactures seven hormones, of which the production is regulated by the hypothalamic hormones through the hypophyseal portal system. These hypothalamic hormones can either be releasing or inhibiting, thereby controlling the amount of hormone secreted by the anterior pituitary. Conversely, the posterior pituitary does not make hormones but stores and releases hormones like ADH and oxytocin, which are produced by the hypothalamus.
DNA is spread out in the nucleus of a cell of non-dividing cells it is called ___________
Where does aerobic respiration take place in prokaryotes?
Aerobic respiration in prokaryotes occurs in the cell membrane, as they lack mitochondria. Not all prokaryotes use aerobic respiration; some are anaerobic or facultatively anaerobic, adjusting their metabolic process according to the presence of oxygen.
Aerobic respiration in prokaryotes, which includes bacteria and archaea, takes place in the cell membrane as they lack the organelles found in eukaryotes. Unlike eukaryotes, where aerobic respiration occurs in the mitochondria, prokaryotes carry out this process on their cell membrane since they do not possess membrane-bound organelles. It's important to note that not all prokaryotes are capable of aerobic respiration; some are strictly anaerobic or can switch between aerobic and anaerobic metabolism (facultative anaerobes). However, for those prokaryotes that do engage in aerobic respiration, the cell membrane is the site where the electron transport chain is located, and where ATP is generated by oxidizing nutrients using oxygen as the final electron acceptor.
What anatomical feature is responsible for the cervical enlargement of the spinal cord?
The cervical enlargement of the spinal cord is a region with a larger population of neurons that controls the appendicular muscles, especially in the upper limbs. This enlargement is supported by the structure of the cervical vertebrae, specifically those like C4 and C5.
Explanation:The cervical enlargement of the spinal cord corresponds to the region of the ventral (anterior) horn that has a larger population of neurons. This region is responsible for the regulation of the appendicular muscles, particularly those in the upper limbs, including the fine musculature of the fingers. The density of the neuronal population in the cervical enlargement is greater because of the greater control required over these muscles.
The cervical vertebrae, particularly those like C4 or C5, are designed to accommodate this enlargement. They have features such as a small body and a bifid (Y-shaped) spinous process. These vertebrae also have openings called the transverse foramen for the passage of cervical spinal nerves and an artery that supplies the brain.
In summary, cervical enlargement is a distinct anatomical feature of the spinal cord and is characterized by a high density of neurons in the anterior horn meant to control the appendicular muscles of the upper limbs. It is accommodated by the structure of the cervical vertebrae.
Learn more about cervical enlargement here:https://brainly.com/question/32545357
#SPJ6
What would happen if gametes were not haploid?
a. The offspring would have half the number of chromosomes it is supposed to have.
b. The offspring would have double the number of chromosomes it is supposed to have.
c. The offspring would be genetically identical to it's parent.
d. The offspring would be genetically different from it's parent.
17. Replication, transcription, and translation
A.
all refer to the synthesis of macromolecules.
B.
refer to RNA synthesis, DNA synthesis, and protein synthesis, respectively.
C.
require the synthesis of polysaccharides.
D.
would be expected to be exergonic reactions.
E.
all use nucleotides as building blocks.
...?
Replication, transcription, and translation correspond to DNA synthesis, RNA synthesis, and protein synthesis, respectively, and they are crucial anabolic processes that facilitate the flow of genetic information from DNA to RNA to protein.
Explanation:When it comes to replication, transcription, and translation, these terms refer to different processes within a cell but are all centered around the handling of genetic information and the synthesis of biomolecules.
Replication refers to the process of copying DNA before cell division, ensuring that each new cell receives a complete set of genetic instructions. Replication is considered an anabolic process as it builds new molecules - in this case, DNA.
Transcription is when the information in DNA is transcribed into messenger RNA (mRNA). This RNA synthesis lays the groundwork for making a specific protein.
Lastly, translation is the process where ribosomes read the information on mRNA and synthesize proteins. During this process, amino acids are linked together to form polypeptides, which fold into functional proteins. Translation is also considered an anabolic process.
Therefore, the correct answer to the student's question, '17. Replication, transcription, and translation,' would be B. They refer to RNA synthesis, DNA synthesis, and protein synthesis, respectively.
Please Please help me!!!
On the New York seismograph, the first P wave was recorded at 9:01 UTC. UTC is the international standard on which most countries base their time. At what time (UTC) did the earthquake actually occur? Explain.
The recorded time of the first P wave on the New York seismograph was 9:01 UTC. However, considering the travel time of P waves, the earthquake actually occurred at 9:00 UTC, with the one-minute difference accounting for the waves' transit time.
Explanation:The New York seismograph recorded the first P wave at 9:01 UTC, indicating the initiation of the seismic activity. However, P waves are the fastest seismic waves and are the initial signals of an earthquake. The time lag between the P wave detection and the actual earthquake occurrence is due to the travel time of the seismic waves from the earthquake epicenter to the seismograph station.
To determine the actual time of the earthquake, we need to consider the travel time of the P waves. The P waves typically travel at an average speed of about 6 to 7 kilometers per second through the Earth's interior. Using the formula Time = Distance/Speed, we can calculate the time it took for the P wave to reach the seismograph station. Assuming a distance of 0 km (since it's the local station), the time is approximately 1.5 to 1.7 seconds. Subtracting this travel time from the recorded time of 9:01 UTC gives us the actual time of the earthquake, which is 9:00 UTC.
In summary, the 1-minute discrepancy between the recorded P wave and the actual earthquake time is attributed to the travel time of the seismic waves. By accounting for this travel time, we can accurately determine when the earthquake occurred, in this case, at 9:00 UTC.
As blood is filtered in the excretory system, which of the following functions like a recycling center?
A.the bladder
B.Bowman's capsule
C.tubules in the kidney
D.ureters between the kidney and the bladder
Answer: C. tubules in the kidney
The chief function of kidney is the production of urine. Kidney is the excretory system of the body. The blood being filtered by the glomerulus of the nephron reaches to the renal tubule in order to reabsorb water, glucose, nutrients and ions such as sodium. All these components are reabsorbed back into the blood. Therefore, tubules in the kidney functions like a recycling center as they allow the reabsorption and reuse of valuable components before they are excreted out along with urine.
Food chains and webs not only describe the order organisms are eaten, but they also describe the _____.
a. flow of energy in an ecosystem.
b. importance of the ecosystem.
c. health of the ecosystem.
d. animals that are all related.
Which physical factors MOST influence a marine biome?
A) tides, oxygen, costal hotel development
B) sunlight, fishing boats, whale population
C) wave motion, salinity, atmospheric pressure
D) plankton, water temperature, sand composition
Geologists discovered fossil evidence of mesohippus, an ancestor of the modern horse. Mesohippus lived in North America about 40 million years ago. Mesohippus was about two feet tall, ran on hooves with three toes, and had large, grinding teeth. What statement is BEST supported by the fossil evidence? A) Ancient horses were once carnivores. B) Horses have evolved over the last 40 million years. C) Horses migrated from South America into North America. D) Modern-day horses share a common ancestor with all mammals.
Answer: B: Horses have envoled over the last 40 million years
Explanation:
During diffusion molecules move in what type of motion
it moves from higher to lower concentration
Which of the following rocks forms from shells and calcium carbonate?
limestone
halite
mudstone
coal
Answer:
limestone
Explanation: