UNLU

Why are viruses considered to be nonliving?

O

O

A. They have no genetic material.

B. They cannot obtain energy from their host.

O

c. They do not respond to their environment.

O

D. They can reproduce only in a host cell.

There are two types of cell division. The first (A) produces cell that are identical to the original cell. The second (B) produces cell that are different from the original cell.

What is the difference between stressed and bleached coral?

Phage lambda infects E. coli in a nutrient-starved, malnourished host. Why would that phage most likely take the lysogenic, rather than lytic, route of infection in a low nutrient environment?

Multicellular organisms must be protected from the external environment. Because of this, cells of even the simplest multicellular organisms are arranged to form an external barrier of A) cellular tissue. B) epithelial tissue. C) connective tissue.

Which of the choices below explains why the arterioles are known as resistance vessels?

Which of the following is true about animals? A. All animals are single-celled. B. All animals have complex organ systems. C. All animals are consumers. D. All animals are producers.

What does the shadow used by sundial to tell time look like in the morning, midday and evening

What chemical structure makes up the cell membrane? hydrophobic fatty acid protein bilayer phospholipid bilayer

The first organisms to repopulate an area affected by a volcanic eruption are called

Which process is used to release insulin from pancreatic cells into the blood stream?