A gas has?

no definite shape or definite volume.

a definite shape but no definite volume.

a definite volume and definite shape.

a definite volume but no definite sh

A weakened immune system may be caused by

If my hypothesis is that a virus will replicate faster at 98 degrees than 101 degrees what is my independent variable? Dependent variable?

Are amino acids outside the active site important for optimal function of the enzyme?

Description of plankton

What is happening during the "pause" phase when the heart is resting (relaxing) ?

What is the product of spermatogenesis?

What information should the nurse document in the medication record when administering a non-narcotic pain medication? select all that apply?

Lymphocytes that are clones of activated B cells or T cells that enhance resistance to future infection are called: a. memory cells. b. clones cells. c. enhanced cells. d. recall cells.

A group of scientists are studying the internal parts of a cell. Which microscope is most appropriate for these scientists to use?

Which characteristic do all protists have? A They all make or consume food. B They all survive in any environment. C They are all unicellular. D They all have flagella.