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ElenaW [278]
3 years ago
12

Why would Carbon, Nitrogen, and Phosphorus be key elements for living things?

Biology
1 answer:
igomit [66]3 years ago
3 0

Nitrogen and Carbon make up amino acids, that create proteins.

Phosphates make up DNA and ATP energy which allows for the transport of proteins and lipids in and out of a cell.

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You are excited because your lab is studying the first microorganisms retrieved from Mars! Interestingly, their genetic material
Oliga [24]

Answer: The maximum number of amino acids that could be coded is 2

Explanation:

  • A codon in this microorganism is 2 bases instead of 3 bases .
  • In order to encode a protein a sequence requires a start and stop codon
  • If you assume no start codon: then only 2 bases would make up the stop codon.
  • This leaves 4 bases which is 2 codons. This would encode 2 amino acids.

  • If you assume a start and stop codon, then each codon would be allocated 2 base pairs each =  4 base pairs
  • This only leaves 2 base pairs, a single codon which would only code for 1 amino acid

6 0
3 years ago
How many electrons are in a nucleus
Annette [7]
Krypton's atomic number is 36. This tells us that an atom of krypton has 36 protons in its nucleus<span>.</span>
6 0
3 years ago
Reptiles are better suited to dry land than their amphibian ancestors because
Vaselesa [24]

Answer:

<u><em>All of the above.</em></u>

Explanation:

1. Their watertight skin minimizes moistures loss: <em>Reptiles have a reputation that they are “slimy” when we touch and hold them; however, they have dry skin, which has even fewer glands than mammals or amphibians. The main special feature of their skin is that the epidermis is heavily keratinized with a layer, which also prevents water loss.</em>

2. Amphibians must lay eggs in water or in moist soil to reduce moisture loss: <em>Because amphibian eggs don't have an amnion, the eggs would dry out if they were laid on the land, so amphibians lay their eggs in water.</em>

3. Reptile egg shells are harder than amphibians' eggs: <em>Reptile eggs are coated with a leathery or brittle coating, and the animals that hatch from them are miniature versions of the full-sized animal parent. In contrast, amphibian eggs are transparent and jelly-like. The animals that hatch from them still must go through metamorphosis.</em>

<u><em>Hope this helps you have a better understanding:) !!</em></u>

7 0
2 years ago
Describe two ways in which indoor air pollution can be prevented?
blagie [28]

Answer:

Ventilation and mixing outdoor air with indoor air

Explanation:

6 0
3 years ago
Why don't people's cells starve from lack of glucose while they are fasting​
GenaCL600 [577]
Answer:


Fasting can definitely raise blood glucose. This is due to the effect of insulin falling and the rising counter-regulatory hormones including increased sympathetic tone, noradrenaline, cortisol and growth hormone, in addition to glucagon. These all have the effect of pushing glucose from liver storage into the blood. This is normal. If you are not eating, you want to use some stored glucose. The question is this – if you are not eating, and your blood glucose went up, where did that glucose come from? It can only have come from your own body (liver). So, it’s a natural phenomenon, and the fasting now allows your body to use some of the glucose for energy.


6 0
2 years ago
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