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SVETLANKA909090 [29]
3 years ago
6

The sun's energy and composition is provided by which of the following?

Biology
1 answer:
harkovskaia [24]3 years ago
3 0
I am pretty sure that your answer is C or D. Im not sure between the two which. Sorry. 
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One cycle in a polymerase chain reaction (PCR) involves incubating the sample at three successive temperatures: 94° C., 50° C.,
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Answer:

 Initial extension ( elongation)

Explanation:

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Maria wanted to grow a fern in her backyard. Acting on a suggestion from a friend, she collected brown dots from the underside o
Colt1911 [192]

Answer:

A. The fern transitioned from gametophyte generation to sporophyte generation.

Explanation:

Ferns undergo an ALTERNATION of GENERATIONS in their reproductive life cycle. That is, they alternate between an incospicuous gametophytic stage and a dominant sporophytic stage. The sporophyte produces haploid spores, which germinates into the gametophyte plant called PROTHALLUS.

The gametophyte produces gametes (male and female) which fuse together to form the diploid zygote, which eventually develops into the SPOROPHYTE plant via mitosis. In this question, the brown dots from the underside of a fern's leaves that Maria collected are the spores.

When she places them in a pot, the spores germinated into gametophyte stage, then formed sporophyte, which is the small leaves she noticed growing from the pot. From this, it can be observed that the fern is transitioning from GAMETOPHYTE generation to SPOROPHYTE generation.

3 0
3 years ago
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Why are groups of small cells better than one large cell at moving material in
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The groups of small cells better than one large cell at moving material in  and out because they have a greater surface-to-volume ratio.

<u>Option: A</u>

<u>Explanation:</u>

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a proton located in the atom is the nucleus

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Alleles are alternate versions of _____ gene(s) that have ____ nucleotide sequences. A. the same; completely different B. the sa
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