3 years ago

Mutation on its own is unlikely to play an appreciable role in speciation, except when the mutation:

Biology

1 answer:

igor_vitrenko [27]3 years ago

8 0

Is sense and is heritable and ocour in exon part

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The principal microtubule-organizing center in animal cells is the ____________. A. centrosome. B. centromere. C. kinetochore. D

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Answer:

A. centrosome

Explanation:

The centrosome is known as the main microtubule-organizing center in the animal cells.
The centrosome constitutes of two centrioles and is surrounded by the pericentriolar material which is nothing but a structured matrix of proteins.
It is the center through which the microtubules emerge.
In animal cells, the centrosome is associated with the formation of spindle fibres.

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The diagram shows an energy pyramid.

stellarik [79]

Answer:

D: All levels contain the same amount of energy

Explanation:

This is due to how the number of animals also increase as the energy pyramid level decreases.

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2 years ago

The mass of an element is the sum of the atomic number and the number of

MariettaO [177]

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Which of the following is not a product of the light reactions of photosynthesis? 1) NADPH 2) NADH 3) ATP 4) Oxygen

n200080 [17]

Answer:

The correct option is number 2. NADH is not product of light reactions of photosynthesis.

Explanation:

The light energy from the sun is captured by the pigmented molecule, chlorophyll, of the plants. This light energy is converted into chemical energy by a serious of light-dependent reactions. The main products of light-dependent reactions are the energy molecule ATP and NADPH. Oxygen is released as a by-product during photosynthesis. Hence, all the option 1,3 and 4 are produced during the light reactions except for option 2 i.e NADH.

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