Counting the rings on a tree will always tell you the exact number of years it has been alive.

a. True

b. False

DNA is considered the hereditary material. Why?

A 34-year-old postal worker presents to your health center for evaluation of pain in her joints. She states that the pain is worse in her fingers and wrists, both hands are affected.

Monkeys and humans share many of the same DNA sequences and have similar proteins, indicating that a ... the two groups belong to the same specie b ... the two groups share a relatively recent common ancestor c ...

Which theory suggests that all cells come from other cells?

Sheila is considered to be very attractive by both men and women. Which of the following features is she most likely to have? a) large chinb) large eyes c) high foreheadd) full lips

The mechanism of urine formation involves three processes: filtration, reabsorption, and secretion. Primary urine is formed by filtration from the blood.

This tree was constructed by comparing sequences of homologs of a gene that plays a role in development; Drosophila was used as an outgroup.

What is one main difference between the cell wall and the cell membrane?

Agrobacteriuminfects plants and causes them to form tumors. You are asked to determine how long a plant must be exposed to these bacteria to become infected.

How do oozes differ from abyssal clay? Discuss how productivity, destruction, and dilution combine to determine whether an ooze or abyssal clay will form on the deep-ocean floor