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laila [671]
2 years ago
12

Most hypotheses state that prokaryotic anaerobes probably evolved first. Why?

Biology
1 answer:
Whitepunk [10]2 years ago
6 0

Answer:

Oxygen was not present on early earth

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Identify the function of the following different types of RNA molecules:
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Answer:

Explanation:

mRNA is used to produce proteins from genes. rRNA, along with protein, forms the ribosome, which translates mRNA. tRNA is the link between the two other types of RNA.

4 0
3 years ago
"In the past, the ftz gene was thought to have no separable stripe cis-regulatory elements. What observations using the Stubb me
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Knew about zebra element, thought there were no separable stipe cis-elements

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Which three statements provide reasons that scientists are considering renewable sources of energy?
Scorpion4ik [409]

These are the three explanations that give reasons that scientists are considering renewable source of energy:

1. Renewable sources are assets implies they are old and reliable sources.

2. Most renewable sources are effectively accessible in nature.

3. Renewable resources are cost-effective in contrast with non-renewable resources.

A renewable energy source implies energy that is feasible, that can't run out, or is unending, similar to the sun. It is additionally named 'alternative energy'. These assets are fit for recovery. The recovery of these sources includes a few biological cycles on a time scale. Sun, water, air, and heat from the earth are sustainable sources that we can use to make solar-based, tidal, wind, and geothermal energy. Renewable energy is additionally called green or eco energy.

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7 0
2 years ago
If a Killer whale is feeding at the fourth trophic level, how much phytoplankton mass is required to add each gram of new mass t
bekas [8.4K]
A. 1000 grams. 1000 is divided by ten each time it goes up the trophic scale. since it goes up 2, 3 and 4, the answer is 1000. (1000/10/10/10=1)
3 0
3 years ago
You have a cup of beans in front of you with 20 white beans and 20 red beans. These beans represent the alleles for a simple Men
Marta_Voda [28]

Answer:

Dominant: 20, Recessive: 20

Explanation:

The case shown in the question above explores simple Mendelian traits, since it shows a population where individuals of the same species present the dominant allele (R- red) and the recessive allele (r- white). We can project, then, that this population has an allele balance, where it is possible to find 20 red beans, which have the dominant allele and 20 white beans, which present the recessive allele.

4 0
4 years ago
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