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8090 [49]
3 years ago
11

10) Why do viruses need living hosts, such as bacteria or eukaryote cells? A) The host cell is the source of food for the virus.

B) Viruses depend on the host cells that they infect to reproduce. C) Viruses have a cellular structure which never require a host. D) Viruses depend on a host cell because they lack their own DNA or RNA.
Biology
1 answer:
bija089 [108]3 years ago
7 0

B.) is 100% correct

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1. The right answer is enzymes
NADPH are molecules which are produced during reduction of metabolites (for example glucose metabolism, lipid metabolism...)

2. The right answer is enzymes.
<span>The dark reactions (carbon cycle) act by the reduction of carbon dioxides (CO2) to the level of a carbohydrate (like fructose).
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3. The right answer is ATP.
ATP, or adenosine triphosphate, is a nucleotide of the purine family used to store and transport energy (purines are nitrogenous bases).

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The Calvin cycle is a series of biochemical reactions that take place in plant chloroplasts. The Calvin cycle makes it possible to manufacture glucose, an energy molecule, from carbon dioxide. This is called carbon fixation.

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<span>The Krebs cycle (or tricarboxylic cycle or citric acid cycle) is the energy platform of the cell, continuing the catabolism of carbohydrates after glycolysis. It is realized in the mitochondrial matrix and is done exclusively in aerobic.</span>

3 0
3 years ago
Which answer is correct?
White raven [17]

Answer:

4

Explanation:

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How are elemens and compouds related,
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Answer:

An element is a material that consists of a single type of atom. which Each atom type contains the same number of protons. the Chemical bonds link elements together to form more complex molecules called compounds. A compound consists of two or more types of elements held together by covalent or ionic bonds.

Explanation:

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That's believed to be True.
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