Answer:
during the 1st trimester
Explanation:
Just did it on study island
Cellular differentiation begins in the third week after fertilization, where unspecialized stem cells become various specialized cell types. The correct option seems to be missing which is the third week after fertilization.
Cells begin the differentiation process early in embryonic development. Specifically, cellular differentiation starts during the third week after fertilization when the embryo starts to form various specialized cells. This is when stem cells become specialized into cell types such as muscle cells, nerve cells, and reproductive cells. As part of this process, certain genes are activated, indicating the cells' transition into different forms with unique structures and functions suitable for their roles in the body.
True or False: Vaccines not only protect those who get vaccinated, but others as well.
Explain your answer.
A scientist is using a microscope to study the image below. Which kind of plant could the scientist be observing?
1. Liverwort
2. Club moss
3. Moss
4. Hornwort
Answer:
club moss
Explanation:
trust me i stole it
identify the genotype for each numbered item .
Answer:
1- RRYy
2- Rryy
3- ry
4- wrinkled and yellow
Answer:
C,B,A,C
Explanation:
What molecules are made during transcription
Answer:
During transcription, only one strand of DNA is usually copied. This is called the template strand, and the RNA molecules produced are single-stranded messenger RNAs (mRNAs). The DNA strand that would correspond to the mRNA is called the coding or sense strand
Explanation:
The RNA molecules are produced during the process of transcription.
TranscriptionIt is the first step in decoding the genetic information of the cell.
It is the process by which the information in a DNA strand is copied into a novel molecule of mRNA.
At the time of transcription, the enzymes known as RNA polymerases construct the molecules of RNA, which are complementary to a part of one strand of the double helix of DNA.
The prime enzyme, which takes part in the process of transcription is RNA polymerase.
Thus, the molecules of RNA are produced during transcription.
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hi!:) can you please complete this for me? i’m a little confused.:)
1. The sun
2. Chemical energy
3. Photosynthesis
4. Store
5. release
6. Cellular respiration?
Last one I'm not 100% sure.
ASAP WILL GIVE BRAINLIEST
An organism and its taxonomic key are shown below.
The organism has several segments on its body. There are two pairs of legs shown from each segment. Pincers like structures are shown at the top end of its cylindrical body. 3 cm is written next to the image of the organism.
Taxonomic Key
Step Characteristic Organism
1 8 legs Go to step 2.
More than 8 legs Go to step 3.
2 One body region Go to step 4.
Two body regions Go to step 5.
3 One pair of legs on each body segment Centipede
Two pairs of legs on each body segment Millipede
4 Less than 1 millimeter long Mite
More than 1 millimeter long Tick
5 Claw-like pinchers Go to step 6.
No claw-like pinchers Spider
6 Long tail with a stinger Scorpion
No tail or stinger Pseudoscorpion
Which organism is shown in the image?
Centipede
Millipede
Mite
Spider
Answer:
Millipede
Explanation:
1. It has more than 8 legs, so go to Step 3.
3. It has two pairs of legs on each body segment, so it is a Millipede.
Answer:
Millipede
Explanation:
1. It has more than 8 legs, so go to Step 3.
3. It has two pairs of legs on each body segment, so it is a Millipede.
Which sources would preserve the soft tissues of an early mammal
Answer:
Amber , permafrost and tar
Explanation:
Amber , permafrost and tar would preserve the soft tissues of an early mammal. Soft tissues of early mammals would preserve in case of amber in Russia. and frozen soil in the Arctic. Although hair and mammary glands are soft tissue but they are not readily fossilized as mammary glands and hairs are derived from dermic structures
Soft tissue preservation is rare and requires rapid burial in environments that are oxygen-free and low-energy. Examples of such preservation include burial in volcanic ash, trapping in amber, and freezing in glaciers. These conditions help prevent decay and allow soft tissues to remain intact over time.
Soft tissue preservation is rare due to the need for rapid burial to prevent bacterial decay. Such preservation typically occurs in environments that are oxygen-free and low-energy. Examples include:
Burial in volcanic ash, which rapidly covers and preserves remains.Trapping in amber, as seen in perfectly preserved ancient insects.Frozen in glaciers, as evidenced by preserved mammoths with intact skin and hair.These conditions prevent the action of bacteria and other decomposers, allowing soft tissues to remain intact over millions of years.
The type of intelligence that involves having the ability to perceive, understand, and regulate emotion is known as __________ intelligence.
A.
cognitive
B.
emotional
C.
creative
D.
general
Answer:
B.) Emotional
Explanation:
Right on edg. 2020
Danielle is arguing that genetically modified (GM) food crops have many drawbacks, and that the use and development of these crops should be curtailed. Which two of the following statements provide the STRONGEST evidence in support of Danielle's argument? Select two answers.
A. Many consumers are demanding labels that identify GM foods.
B. Herbicide-tolerant GM plants may lead to overuse of herbicides.
C. Pest-resistant GM plants may kill beneficial insects as well as pests.
D. Genetic technology is decreasing the number and variety of plants that are raised for food.
Answer:
I think B and C.
Explanation:
Answer:
Both B and C.
Explanation:
Why did DNA technology lead to more use of cladistics?
A. It proved that prokaryotes and eukaryotes are related.
B. It showed that humans are in the species sapiens.
C. It showed new evolutionary relationships between animals.
D. It proved that the Linnaean system was the most accurate.
DNA technology lead to more use of cladistics because it showed new evolutionary relationships between animals.
What is DNA?
The term DNA is the acronym that means deoxyribonucleic acid. This is the genetic material that is found in living things and have proven to be usefull in the search for evolutionary connections.
Hence, DNA technology lead to more use of cladistics because it showed new evolutionary relationships between animals.
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Which of the following would best characterize an ecosystem? *
An individual living thing, such as an antelope
A group of different species that live together in one area
All organisms as well as the climate, soil, water, rocks and other nonliving things in an area
Answer:
It would be the last one: All organisms as well as the climate, soil. water, rocks, and other nonliving things
Explanation:
The first one is an organism
The second one is a population
And the last statement is a ecosystem
Hope this helped
what four type of animals
Answer:
I don't really understand the question so here is a list of some types of animals
Explanation:
Mammals
Birds
Reptiles
Amphibians
Fishes
Insects
Crustaceans
Arachnids
Describe the function of each Cytoplasm Chloroplasts Cell wall Centrioles
Cytoplasm: It's responsible for the shape of a cell, as well as making sure organelles are where they're supposed to be. They control what comes in, and what comes out.
Chroloplasts: This organelle are included in plants. They control the function of photosynthesis.
Cell Wall: The protection of a plant cell. It forms a frame for the cell and provides support
Centrioles: Helps with cell division in animal cells.
I hope this helps <3
Good luck!
Which of these is not currently a source of usable energy?
A
The sun
B
The moon
Heat from within the earth's crust
D
Running water
Answer:D
Explanation:
Because we can use the sun and the moon for light.
Answer:
B The moon
Explanation:
There are different source of environmental renewable energy sources which are usable for ourselves.
• The lunar energy has also great scopes in the near future as a renewable energy source.
stay safe and have a good day
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⊕ΘΞΠΤ⊕
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All fungi are ____.
Answer choices: Prokaryotic, Eukaryotic, Unicellular, Multicellular
Answer:
Eukaryotic
Explanation:
All fungi are eukaryotic due to their cells containing discrete membrane-bound organelles. The definition of a eukaryote, "A eukaryote is an organism whose cells contain a nucleus within a membrane. The genetic material and information of a eukaryote is contained within this nucleus."
Answer: eukaryotic
Explanation: because fungi live as either single-celled organisms or multicellular organisms.
And it can't be prokaryotic because bacteria is the only prokaryotic
A student made this diagram after observing the organisms of a model ecosystem in a large terrarium which pair of organisms are both producers in the students model
The question is incomplete as it does not have the image (attached) and the options which are
A. Flies and marigolds
B. Pull bugs and flies
C. Crickets and grass
D. Grass and marigolds
Answer:
D. Grass and marigolds
Explanation:
In the given question, the organisms which can be considered producers are the marigold and grass as the producers are the autotrophic organisms.
The producers can produce the first energy molecule called glucose through the process of photosynthesis and from there the atmospheric elements enter the food chain.
The marigold and the grass are therefore considered producers and thus option-D is the correct answer.
Answer:
grass and marigolds
Explanation:
Examine the diagram of the food web described in the passage. Using arrows, how would you label the direction of energy flow through this web?A:Starting at the edges and and flowing toward the shrimp. B: Starting at shrimp and flowing outward. C: Starting at the plankton and flowing upward.D: Starting at the birds and flowing downward
Answer:
c.
Explanation:
The food web starts as the plankton are eaten by worms and mollusks, which are eaten by shrimp, which are eaten by crabs and fish, and fish eat the shrimp, and birds eat the crabs, shrimp, and fish. I hope my answer helps.
Starting at the plankton and flowing upward. Therefore, option (C) is correct.
What is flow of energy in food web?A food web describes the transfer of energy and nutrients from one organism to another within an ecosystem. The flow of energy in a food web starts with producers, such as plants or algae, which convert energy from the sun into organic matter through photosynthesis. This organic matter is then consumed by herbivores, which are then consumed by carnivores or omnivores, and so on. Each level of the food web represents a trophic level, with energy and nutrients being passed up the chain as organisms consume one another.
As energy moves up the food web, some of it is lost through various processes such as respiration, heat loss, and waste production. This means that the amount of energy available at each trophic level decreases, resulting in a pyramid-shaped structure of the food web. The flow of energy through a food web is essential for maintaining the balance and stability of an ecosystem, as it determines the survival and population of different organisms within it.
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How is the light wave that travels through a prism refracted?
The light is absorbed by the glass in the prism.
The light speeds up as it leaves the prism and enters the air.
The light reflects off the surface of the prism.
The light slows down as it moves from the air into the glass.
Answer:
The light slows down as it moves from the air to the glass
Explanation:
The different media (particles of matter) that light travels through determines the speed and appearance of the light to the human eye...
So when White Light is shone through the prism, the speed slows down and separates the different wavelengths of light, giving you the different colours
HOPE THIS HELPS!!
The light wave that travels through a prism refracted is The light slows down as it moves from the air to the glass
Why are light wave that travels through a prism refracted?The different media i.e.particles of matter that light travels via measured the speed and appearance of the light to the human eye. So at the time when the white light is shown via the prism so the speed should be slows down and distinct the various wavelength of light.
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how might using water sometimes require changing its original state
Answer:
Explanation:
Lets say you are using the water to make noodles when you put the water on to boil the water evaporates and turns into a gas instead of a liquid (water vapor)
In one to three paragraphs, list and discuss all the biotic factors you noted in your study. Include animals, plants, and other organisms. Be clear, thorough, and scientifically accurate.
Answer:
Biotic factors are living organisms, basically they all have cells. Examples are rabbits, frogs, sharks, dolphins, sunflower, grass, humans, bears, and other cellular organisms. Biotic factors can live anywhere from land to sea.
Explanation:
The following diagram shows various positions of the moon in
its orbit around Earth. The image of the moon shows its phase as seen from Earth
In which position will one fourth of the illuminated side of the moon be visible from Earth?
A
B
C
D
(I'm indecisive about A and D, so I'm not sure which one is correct)
D.
If you have scratch paper and draw it out, it would greatly help you. A different way would be to visualize it in your head. Behind the Earth is Full moon, in front is new moon, above/below is half/gibbous. To the right of below is 3/4. To the left of below is 1/4. To the right of above is also 3/4. To the left of above is 1/4
Read the video transcript from Dr X and the Quest for Food Safety. What most likely is the purpose of the rescue scene at
the beginning?
to teach viewers about cross contamination
to scare viewers about cross contamination
to make cross contamination funny to viewers
to make cross contamination exciting to viewers
100 POINTS
Answer:
A
Explanation:
She already got it I was just adding an anwser for someone if anybody didnt see her comment on the question.
GOOD LUCK ON THE TEST!!
Answer:
A.) to teach viewers about cross contamination
Explanation:
to any 8th graders or 7th graders that take technology, what are you currently learning in technology class?
this is what u usually learn in these grades for technology
Question 6
Which kingdoms have some organisms that can make their own food (autotrophic)?
The kingdoms that contain autotrophic organisms are Eubacteria, Plantae, Fungi, Protista, Archaebacteria.
This is the case because These 5 kingdoms all have organisms that make their own food rather than eating other organisms for food like heterotrophs do. This is why kingdom animalia doesn't have any autotrophs because they can only get energy from other organisms.
There are three main kingdoms that have organisms that can make their own food excluding the kingdom of protista and fungi. These kingdoms include:Kingdom Plantae, kingdom Eubacteria and Kingdom Archaebacteria,.
Kingdom Plantae is the most familiar and well-known of the three kingdoms. It includes plants, which are well known for their ability to use energy from the sunlight to produce their own food through a process which is called photosynthesis.
The other two kingdoms which are named asEubacteria and Archaebacteria, are groups of bacteria. Some bacteria are able to perform photosynthesis or chemosynthesis, which is a process that allows them to convert inorganic molecules into energy-rich organic compounds without the need for sunlight.
Eubacteria and Archeobacteria:
Individuals of these kingdoms are single-celled, may or may not move, have a cell wall, have no chloroplasts or other organelles, and have no nucleus. Monera are usually very tiny, although one type, namely the blue-green bacteria, which look like algae.
Protista:
Protists are single-celled organisms and usually move by cilia, flagella, or by amoeboid mechanisms. The have no cell wall, although some forms possess a cell wall.
Fungi
Fungi are multicellular,with a cell wall, organelles including a nucleus, but have no chloroplasts. They have no mechanisms for locomotion. Fungi can range in size from microscopic to very large ( such as mushrooms). Nutrients are acquired by absorption.
Plantae
Plants are multicellular and most of them don't move, although gametes of some plants move using cilia or flagella. Organelles which include nucleus, chloroplasts are present, even cell walls are present. Nutrients are acquired by photosynthesis .
Animalia
Animals acquire nutrients by ingestion.
Thus, organisms belonging to Kingdom Plantae, kingdom Eubacteria and Kingdom Archaebacteria are organisms which can make their own food.
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Which of the following is NOT a condition required for populations to increase?
A
good medicine
B
constant sanitation
C
constant food
D
more meat in diet
Answer: D more meat
Explanation:
Which of the following would be the most appropriate model to
determine how pouring concrete over grassland to build a parking lot
will affect the surface water in a watershed?
Select one:
Go to a parking lot on a rainy day and observe the amount of water running off
the parking lot. Go to a grassy field in another city on the same day to observe
the amount of water running off the field. Compare the two observations.
Build two large water tables filled with soil. Plant grass in the soil in one water
table and cover the soil with small rocks in the other water table. Run water over
the surface of both water tables and observe water running off the the surface.
Compare the two observations,
Observe the amount of water flowing through a stream on a rainy day. Observe
the amount of water flowing through the same stream on a sunny day. Compare
the two observations.
Go to a grassy hillside and pour a bucket of water down the hillside. Observe
water running down the hillside. Cover the same spot with a plastic garbage bag
and pour another bucket of water over the bag. Observe water running over the
bag. Compare the two observations.
Answer:Go to a parking lot on a rainy day and observe the amount of water running off
the parking lot. Go to a grassy field in another city on the same day to observe
the amount of water running off the field. Compare the two observations.
Explanation:
What might happen to the organisms in the food web below if the number of phytoplankton and vegetation drastically decreased? The small fish and wading birds would be affected. Only the small fish would be affected. The small fish, bivalves, and invertebrates would be affected. The entire food web would be affected.
Answer: The entire food web
Explanation: Because the small fish eat the plankton and the birds eat the fish, and other things eat the birds etc. etc., technically if the number of phytoplankton and vegetation dropped, it would cause everyone else to have a lack of food
Answer:The entire food web
Explanation: I took the test
(WILL MARK BRAINLIEST and 25pts) Which layer of the sun contains jets of rapidly moving gas called spicules?
a. Core
b. Corona
c. Photosphere
d. Chromosphere
Answer: D Chromosphere
Explanation:
The Chromosphere is a pink color, Second of the three main layers and is roughly about 3,000-5,000 KM deep
Answer:
chromosphere
Explanation:
J.J. Thomson's Plum Pudding Model is an example of _____. A. a picture B. an analogy C. a prototype D. a mathematical model
Answer:
it is D
Explanation:
All prokaryotes belong to one of two domains:_____
or_______
Bacteria or Archaea.