In humans, your body cells have 46 chromosomes. How many chromosomes are in a sperm egg cell if, when they come together to form a fertilized zygote, there are 46 chromosomes?

The strongly acidic nature of DNA poses a problem. Why do Watson and Crick think that the DNA "dyad", formed by hybridization of two negatively charged molecules, is stable?

Organisms combine to form what?

Molecular clock. A. take advantage of the fat that all mutations effect the fitness of the organism. B. take advantage of the known mutation rates to estimate how long ago organisms shared a common ancester.

Explain where each molecule of ATP produced during aerobic cellular respiration comes from. Include how NADH and FADH2 contribute to the production of ATP.

Where is the greatest biodiversity on earth found?

A classmate states that mitochondria and chloroplasts descended from the same type of bacteria. Does the evidence support this? explain your reasoning

Can gel electrophoresis separate DNA fragments

Which question can be answered using the scientific method? A) what was the highest temperature that was recorded yesterday? B) what is the most interesting aspect of the light dependent reactions?

Which of the following correctly describes a plant structure and how it aids in the process of cellular respiration? A. roots - collects water required for cellular respiration B. mitochondria - the site of cellular respiration C.

Why would a lab technician choose a bacterial artificial chromosome for cloning a gene rather than a plasmid?