Which statement best describes the organelles in a cell?

Answers

Answer 1

Answer: Organelles must work together and their activities must be coordinated .

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Which example illustrates darwins main contribution to the theory of evolution ?

Answers

I don't see an example here but his main idea of the Theory of Evolution was natural selection, otherwise known as Survival of the Fittest.

What poisonous gas is found in the exhaust fumes of car engines?

Answers

Carbon Monoxide is the poisonous gas that is found in the exhaust fumes of car engines. A person should never sit in a closed garage, building, etc without adequate ventilation. The carbon monoxide can kill a person very fast in these types of situations.

I believe the answer is Carbon Monoxide. There are a lot of different poisonous gases but carbon monoxide is the most popular.

Which of the following categories includes the most distantly related organisms?(A) family
(B) species
(C) class
(D) genus
(E) order

Answers

In order, it goes:
Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species

So in this case, it would be (C) class

The answer is C. Class

The variation of kernel color in corn plants is an inherited trait. R is the dominant allele for red kernels in a corn plant and r is the recessive allele for yellow kernels. What is the probability that a corn plant with the genotype Rr crossed with a corn plant rr will have offspring with the genotype rr? Express your answer as a fraction using numerals for numbers and / for the fraction bar. Do not include spaces.

Answers

The answer is 1/2.

If:
R - the dominant allele for red kernels
r - the recessive allele for yellow kernels

Then:
RR - dominant homozygote
Rr - heterozygote
rr - recessive homozygote

The cross Rr x rr will result in 1/2 of offspring with red kernels (Rr) and 1/2 of offspring with yellow kernels (rr):
Parental generation: Rr x rr
Offspring generation: Rr Rr rr rr
So, there are 2 out of 4 Rr offspring (2/4 = 1/2) and 2 out of 4 rr offspring (2/4 = 1/2).

Answer:

1/2

Explanation:

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