In pea plants, the allele for tall (T) is dominant to the allele for short (t). Which of the following is the percent of offspring that will be tall if a heterozygous plant (Tt) is crossed with a homozygous tall plant?

A. 100%
B. 75%
C. 50%
D. 25%
i think its B
The nucleus of an atom is composed of uncharged particles as well as which of the following?
A. Protons
B. Neutrons
C. Electrons
D. Positrons
i think its C
Which of the following statements best explains the relationship between the mitochondria and the plasma membrane?
A. The mitochondria makes proteins that become a part of the plasma membrane.
B. The mitochondria makes a gas that the plasma membrane uses.
C. The mitochondria builds cytoskeleton that gives the plasma membrane strength.
D. The mitochondria makes ATP that the plasma membrane can use for energy.
i think its D

With homozygous T parent, won't there always be a T in the genotype?

Electrons are not in nucleus.

https://www.google.com/search?client=safari&rls=en&q=mitochondria+plasma+membrane&ie=UTF-8&oe=UTF-8&gws_rd=ssl

im confused are these answers incorrect ?

For the first question, to determine the percent of offspring that will be tall if a heterozygous plant (Tt) is crossed with a homozygous tall plant, you need to understand the concept of dominant and recessive alleles. In this case, the allele for tall (T) is dominant to the allele for short (t).

When a heterozygous plant (Tt) is crossed with a homozygous tall plant (TT), the possible combinations of alleles for the offspring are: TT and Tt.

TT represents homozygous tall plants (100% tall) and Tt represents heterozygous tall plants (50% tall).

Therefore, the percent of offspring that will be tall is 100% (homozygous tall) + 50% (heterozygous tall) = 150%. However, since we are looking for a percentage, we need to normalize the value by dividing by the total number of possible genotypes, which is 2 (TT + Tt).

So, the correct answer is:
B. 75%, which is obtained by dividing 150% by 2.

For the second question, the nucleus of an atom is composed of uncharged particles called neutrons, as well as positively charged particles called protons. Electrons, on the other hand, are negatively charged particles that orbit around the nucleus.

Therefore, the correct answer is:
B. Neutrons.

For the third question, the mitochondria is an organelle responsible for producing energy in the form of ATP (adenosine triphosphate) through cellular respiration. The plasma membrane, on the other hand, is primarily involved in regulating the transport of molecules in and out of the cell.

The mitochondria produces ATP, which the plasma membrane can use for energy. It does not play a role in making proteins for the plasma membrane, producing gases, or building cytoskeleton.

Therefore, the correct answer is:
D. The mitochondria makes ATP that the plasma membrane can use for energy.