If energy is needed to move materials into or out of a cell, what is most likely occurring?

a. active transport

b. passive transport

c. osmosis

d. diffusion

What can mRNA do that DNA cannot? A. Copy itself B. Leave the nucleus C. Enter the nucleus D. Leave the cell

The life cycle of prairie grasses are а bout: 1 month 1 year 2 years 6 months

Dental plaque illustrates a form of microbial growth known as: A. Swarms B. Reticulate fabric C. Aggregated growth D. Biofilms E. Diffuse growth

Why was it hard for many immigrants to find jobs in the United States in the late 1800s?

What happens to the temperature of gasses as they reach the top of the suns convection zone

A mutation may be passed along to human offspring through what

If the concentration of water was higher inside a plant cell than outside the cell, what would the water do? A. It would move out of the cell. B. It would move into the cell. C. It would cause the cell to burst. D. It would move into the vacuole.

8. How do paleontologists use the fossil record to learn about relationships among groups of organisms?

Describe the process of meiosis that ensures that both maternal and paternal chromosomes are passed on to each spermatozoon

What steps does a doctor take before making a hypothesis?