Which of the following is a major group of Protista?

algae

phytoplankton

protozoa

all of the above

Which homeostatic process is characterized by the diffusion of only water molecules?

Use this word in a sentence Skeleton Framework Factory Warehouse Protect Support

Describe how the cell theory developed and changed over time.

Which of these is a pure substance? a. diamond b. salt c. ocean water a only a, b, and c a and b b and c

Suppose the two tryptophan codons within the leader peptide of the trp operon were changed from tryptophan to asparagine.

When the hormone insulin is released into the bloodstream, what form of cell-to-cell signaling is being used? a. endocrine b. paracrine c. neuronal d. contact-dependent?

Most female frogs lay their eggs in water. Male frogs release their sperm into the water to fertilize the eggs, This is an example of?

Which argument supports the idea that viruses are alive? A. Viruses have a cell membrane. B. Viruses contain unique genetic information ... C. Viruses replicate in a host. D. Viruses do not produce proteins.

Make a punnet square showing the alleles the parent plants and the first generation

Which one of the following diseases is caused by a virus? A. Strep throat B. Hepatitis B C. Tetanus D. Tuberculosis