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abruzzese [7]
3 years ago
13

A plausible explanation of Rachel Carson's description of a photo from the ocean's deep

Biology
1 answer:
MakcuM [25]3 years ago
8 0
The answer is False
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Where do light-independent reactions occur?
murzikaleks [220]
The light-independent reactions occur in the storm of the chloroplast<span>. The light- independent reactions are "independent" from light so they can happen else where. The light-dependent reactions happen in the thylakoid membrane of the chloroplast where the light is absorbed, and the reactions depend on the light.</span>
3 0
3 years ago
If a mutation occurs such that photosystem ii no longer functions as efficiently as it should, what might be most directly affec
ivolga24 [154]

Out of the following given choices;

a) The amount of oxygen produced

b) The rate of ATP synthesis by ATP synthase in the chloroplast

c) The rate at which NADPH is produced

d) The rate at which the protons are transported into the thylakoid

The answer is; A

The photosystem captures energy from sunlight and uses it to split a water molecule.   After splitting the water molecule (by taking an electron), the protein complex transports the electron to plastoquinone. The splitting of water molecules results in evolving of oxygen molecules. The hydrogen is what is used to reduce carbon dioxide to glucose.


5 0
3 years ago
Read 2 more answers
In which stage of cell division is the dna copied?
Tcecarenko [31]
Mitosis in the stage prophase chromosome and DNA is copied
8 0
3 years ago
What are the phases of meiosis where crossing over occur
ehidna [41]

Answer:

Prophase 1

Explanation:

Prophase I :It can be divided into five stages:

1)Leplotene: In this stage, chromosome becomes visible and shorten as a single structure.

2)Zygotene: Homologous / sister chromosome pair up. This process is known as synapse. Synapse is the process of attachment of homologous /sister chromosome. One pair comes from the male parent while the other comes from the female parent.

3)Pachytene: Bivalents shorten.

4)Diplotene:Point of attachment of non-sister chromatids. The two chromosomes are seen to be joined at several points along their length. These points are known as Chiasmata.(Chiasmata, a cross). The paternal gene A, B, C may swap for the maternal gene a, b, c for instance, leading to a new gene combination in the resulting chromatids. This is referred to as *CROSSING OVER*.

5)Diakenesis: Homologous centromere move apart.

So, crossing over occurs in *Prophase 1.

5 0
3 years ago
Describe the relationship between chromosomes, messenger RNA, and proteins.
Tresset [83]

A chromosome is a packaged and organized structure containing most of the DNA of a living organism.  Messenger RNA  is a large family of RNA molecules that convey genetic information from DNA to the ribosome, where they specify the amino acid sequence of the protein products of gene expression.  Proteins are large biomolecules, or macromolecules, consisting of one or more long chains of amino acid residues.

8 0
3 years ago
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