BIOLOGY HIGH SCHOOL

Which of these is a correct statement about RNA molecules?A) The shape of RNA is often described as a double helix.
B) RNA was first discovered by James Watson and Francis Crick.
C) RNA contains the genetic blueprint for making protein molecules.
D) RNA molecules transmit the genetic information from the nucleus to the

Answers

Answer 1
Answer: I believe it is D) RNA molecules transmit the genetic information from the nucleus to the ....

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During what stage of the cell cycle is DNA copied?

Answers

DNA isn't really copied, it's more so split into 2 parts.

DNA is split into 2 parts during mitosis, more exactly the 5th stage called anaphase. chromosomes, which hold DNA< are split into 2 (genetically identical) groups, and each respective group goes to one spindle or another, readying for the last phase of mitosis and eventually cytokinesis.

To properly record a measurements, you must record which of the following? (pick as many as you want) A. Number
B. Hypothesis
C. Summary
D. Unit

Answers

TO properly record a measurement, it is a must to record the unit of measure of a certain object that you wanted to measure.
When you say unit it means, that the length, width and height. It may also be the radius, diameter or circumference.

Which of the following calculations require that you utilize the addition rule? A) Calculate the probability of black offspring from the cross AaBb × AaBb, when B is the symbol for black.
B) Calculate the probability of children with both cystic fibrosis and polydactyly when parents are each heterozygous for both genes.
C) Calculate the probability of each of four children having cystic fibrosis if the parents are both heterozygous.
D) Calculate the probability of a child having either sickle-cell anemia or cystic fibrosis if parents are each heterozygous for both.
E) Calculate the probability of purple flower color in a plot of 50 plants seeded from a self-fertilizing heterozygous parent plant.

Answers

The answer is D) Calculate the probability of a child having either sickle-cell anemia or cystic fibrosis if parents are each heterozygous for both. 

The addition rule is used to calculate the probability of one of the events from multiple pathways. If you want that only one of the events happens, you will use the addition rule. In a case when you want to calculate the possibility of a child having EITHER sickle-cell anemia OR cystic fibrosis, you will use THE ADDITION RULE.
For example, in statement B) you will not use this rule because there is no either/or, but both/and. In case, B) you would use the multiplication rule.

Which is the term applied to the repeating stages that a cell experiences, including cell division?. . A.. Mitosis. . B.. Meiosis. . C.. S phase. . D.. Cell cycle.

Answers

I believe that the answer should be D. Cell cycle.

Which checkpoint requires a cell to be of adequate size in order to move to the next phase in the cell cycle? G1/S checkpoint G2 checkpoint G0 checkpoint M checkpoint

Answers

G1, G0 means the cell is not participating in the cycle the very first checkpoint is G1

Which statement about stomata is true?A.)The number of stomata is greater on the upper surface of the leaf.

B.)The number of stomata is greater on the lower surface of the leaf.

C.)The number of stomata is equal on both surfaces of the leaf.

Answers

The answer is B. The number of stomata is more on the lower surface of the leaf. The primary function of the stomata is to regulate moisture loss from the plant. The upper surface of the leaf is more exposed to the air and sunshine thus water is more susceptible to evaporation. However, the stomata is abundant on the lower surface, the location of it helps the plants to conserve more water 
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