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jasenka [17]
3 years ago
10

Why are certain amino acids called essential amino acids 

Biology
1 answer:
Alborosie3 years ago
8 0

Answer:                because they cannot be produced in the body and must be consumed from outside sources

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if a somatic cell in a carrot has 18 chromosomes. how many chromosomes would normally be present in a gamete
Ede4ka [16]
The answer would be 23
7 0
3 years ago
Explain the importance of decomposrs to the overall biogechemical cycle
Ksivusya [100]

Decompose and release to the nutrients to the sources.

                                            The micro-organisms decompose the dead and decaying organic matters. The nutrients are absorbed from soil or atmosphere by the plants. During the absorption these nutrients are depleted from the sources.

From the plants, these nutrients are transferred to the animals at different tropic levels. After the death of plants and animals are decomposed by micro-organisms and release the nutrients to the sources which finally maintain the biogeochemical cycle of nitrogen, Sulphur etc.


8 0
3 years ago
HELPP I’m doing some other work Nd I don’t have enough time to do this 40pts
V125BC [204]

Answer:

1) jaws

2) amniotic eggs

3) turtle

4) lancelot, because they are farthest apart and share the least amount of traits

Explanation:

as you make your way through the cladogram you'll see that with more traits being added the less alike they are. for example turtle is closest to leopard because they share all the previous traits excluding hair which something only the leopard has.

4 0
3 years ago
Which of the following statements about organelles is NOT true?
NNADVOKAT [17]
A- organelles can have more than one role
3 0
4 years ago
Read 2 more answers
Adrenergic receptors Select one: a. can be activated by the release of epinephrine. b. have two structural forms - muscarinic an
LekaFEV [45]

Answer:

The correct answer is  a. can be activated by the release of epinephrine.

Explanation:

Epinephrine is a hormone and neurotransmitter naturally secreted by the body through the adrenal glands, synthesized and stored in the adrenal medulla and released into the systemic circulation. Epinephrine is a non-selective adrenergic agonist, stimulating alpha1-, alpha2, beta1, and beta2-adrenergic receptors. The systemic actions of catecholamines are mediated by the binding of these compounds to plasma membrane receptors, of the GPCR type widely distributed throughout the body and known as adrenergic receptors, which are activated by the catecholamines adrenaline (epinephrine) and noradrenaline . These receptors cause different effects depending on the G protein subtypes to which they are associated and the signal transduction mechanism linked to the specific G protein.

4 0
3 years ago
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