Microbes which enter into our body through our nose will affect our

a) lives

b) heart

c) brain

d) lungs

Which is the strongest muscle in the body

True or false: somatic hypermutation can increase affinity without changing antigen specificity.

Which of the following statements is NOT true of mitosis? A. It is a period of active division. B. It is a process that is part of the cell cycle. C. During the process, the nucleus of the cell does not undergo any change. D. It has four phases.

Adult skin cells can no longer become other types of cells because they have already undergone what?

When are scientific claims accepted? And when are they questioned and/or rejected?

Human height is a polygenic trait. This means that the

How are lakes and ponds similar? A. Both contain still or standing water B. Both generally have the same depth C. Both have the same amount of minerals in them D. Both have the same surface tempature

What is the benefit of using a shortcut in a reaction between two chemicals?

A lily pad grows so that each day it doubles its size. on the 20th day of its life, it completely covers the pond. on what day of its life was the pond half covered?

Why "2/3" Is the fraction of carbon dioxide exhaled by animals?