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3 years ago

Why does the x mean in the word equation for photosynthesis

Biology

1 answer:

zvonat [6]3 years ago

4 0

The ''x'' in the word equation for photosynthesis is ATP

<u>Explanation:</u>

$6 CO_2 + 12 H_2O + photons \rightarrow C_6H_1_2O_6 + 6O_2 + 6 H_2O.$

Oxygen + glucose carbon dioxide + water + x

A chemical reaction happens in this photosynthesis where the atom arrangements are changed to different arrangement to form a new substance. When during the time of photosynthesis, the energy from the Sun is stored in the form of chemical energy.

Here the X is ATP, the Adenosine triphosphate which provides energy for the plants. ATP releases small amount of energy through hydrolysis.

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3 years ago

2.Which of the following represents a genetic cross between 2 individuals that are each heterozygous for both traits?

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Answer:

A. AaBb x AaBb

Explanation:

The term heterozygous refers to the presence of two different alleles of same gene in an organism. The one allele can be of wild type (original type) and one can be mutated or newly formed.

In the question, two traits are represented by two letters, A and B and alleles as A and a and B and b, respectively. We are asked about a cross involving two traits and two individuals in such a way that both are heterozygous.

If we look at option A, AaBb x AaBb,

we see that one trait A and the other trait B is in heterozygous form (Aa and Bb) in both individuals.

If we look at option B. AABB x AABB

we see that one trait A and the other trait B is in homozygous form form (AA and BB) in both individuals. Homozygous means when the alleles are same for each trait in an individual.

If we look at option C,Aa x Bb

There are not two traits, one trait of one individual and other trait of other individual is being crossed that is not possible.

If we look at option D. AAaa x BBbb

Again, the individuals are homozygous for two traits.

Therefore, A is best option.

Hope it helps!

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Mitochondrial DNA is used to follow maternal inheritance and sequences on the Y chromosome is used to follow paternal inheritanc

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