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Llana [10]
3 years ago
12

Which two macromolecules are the main sources of energy?

Biology
1 answer:
Leya [2.2K]3 years ago
3 0

Answer:

Lipids (fats) and carbohydrates

Explanation:

Carbohydrates can be directly broken into glucose for use in cellular respiration. Lipids are used to store energy for extended periods of time. Proteins can be used for energy, but are not as efficient or quick as the previously mentioned macromolecules.

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Answer:

the lungs only

Explanation:

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3 years ago
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Humans and plants<br> can use<br> atmospheric nitrogen (true/false) *<br> True<br> False
Alex

Answer:

False

Explanation:

Humans:

Nitrogen is represented by the symbol N. It is abundant in the environment but humans can't use it directly from air or soil but depends upon green plants and microbes to convert it in to the usable form for using it

Plants:

Plants do not get their nitrogen directly from the air. Although nitrogen is the most abundant element in the air, every nitrogen atom in the air is triple-bonded to another nitrogen atom to form molecular nitrogen, N2

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Over the last several decades, what have researchers discovered about atmospheric CO2 levels?1 They have decreased.2 They have i
Anna11 [10]

Answer:

they have increased

Explanation:

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The CNN (an spanish daily paper) said: the CO2 levels are the highest in the last 3 million years, in a new released the past april.

4 0
3 years ago
If an albino (aa) mates with a person homozygous for normal pigment (aa), select one:
geniusboy [140]
<span>One parent is an albino with the genotype aa (recessive homozygous), while another parent has genotype AA (dominant homozygous). If they mate:</span>  
<span>
Parents aa  x  AA</span> F1 generation: Aa Aa Aa Aa <span><span> 
This means that </span>c. all offspring are normal.</span>
<span>All of them are carriers of the albino allele (a), but albinism is expressed only when there are two recessive alleles.</span>
7 0
4 years ago
In what way are all living organisims on earth the same?
exis [7]

Answer:

WHAT DO ALL LIVING THINGS HAVE IN COMMON? All organisms need food for the energy required to live and grow. They all excrete (get rid of) waste products, and detect changes in their surroundings and respond to them. All living organisms follow a LIFE CYCLE of growth and development, reproduction, and death.

Explanation:

8 0
4 years ago
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