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eimsori [14]
3 years ago
15

17. Which substance on the plasma membrane helps identify chemical signals from outside the cell? a. receptor proteins b. transp

ort proteins c. marker proteins d. cholesterol​
Biology
2 answers:
Rina8888 [55]3 years ago
8 0

Answer:

Carbohydrate Chain

GOOD LUCK FOR THE FUTURE! :)

Brilliant_brown [7]3 years ago
4 0

Answer:

A

Explanation:

Receptor proteins on the surface of cells recognize chemical signals and bind to specific ligands to bring about conformation change to cause a response in the cell.

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All vertebrates have bilateral symmetry and a true coelom. At the base of the phylogenetic tree, neither sponges nor cnidarians
yanalaym [24]

Answer:

Bilateral symmetry allows for directional motion. The coelom cushions organs allow freedom of motion.

Explanation:

Most animals are bilaterally symmetrical in nature with a line of symmetry dividing their body into two sides left and right sides along-with a “head” in top and “tail” in the bottom. Bilateral symmetry consisting an equal arrangement of symmetry about a vertical plane running from top to bottom.

The coelom is known as the main body cavity present in most animals. It is positioned inside the body to surrounds the digestive tract and other organs. In some animals, it is lined with mesothelium. In other animals, such as mollusks, it is undifferentiated. In animals, it helps to allow freedom of motion.

8 0
4 years ago
What are the hair cells and what are their functions?
Alex17521 [72]

Answer:

D, Afferent (primarily outer hair cells) are the most important sensory transducers. Efferent (primarily inner hair cells) are under feedback and “motor control.”  is correct

4 0
3 years ago
During transcription, enzymes bind to a molecule of DNA.
Hunter-Best [27]
Replication thats the answer because my teacher we just know doing this
4 0
3 years ago
2 Explain the important role pro-<br> ducers play in ecosystems.
djyliett [7]

Answer:

Producers are at the bottom of every food chain.

Explanation:

Without producers, the primary and secondary consumers will be affected, as the primary consumer only feeds on producers such as leaves and grass. The producers gain energy from the sun to make food through the process of photosynthesis, and the sun is a infinite resource, thus ensuring that the primary consumers will have enough food to feed and reproduce.

4 0
3 years ago
What is slowed when water is a limiting factor in an environment?
bearhunter [10]
The correct answer is B.
Population growth is correct because humans need water to survive. Actually not just humans, all living things need water for survival. Hope this helps!

Discussion: <span>Some people may think it is A. The truth is “the amount of evaporation” is incorrect. Amount is doesn’t depend on the amount of water. It depends on heat. </span>
5 0
3 years ago
Read 2 more answers
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