Which gland secretes epinephrine?

thyroid

adrenal gland

pineal gland

pituitary gland

Why do cells need both tRNA and mRNA? Only mRNA can be used to repair mistakes in the DNA sequence. Only tRNA bends into a shape that can carry specific amino acids. The tRNA in used on the ribosomes and the mRNA is used in the nucleus.

Personality traits that remain stable and relatively unchanging from about age 30 on are called

Charles darwin developed the theory that explains how new species develop based on evidence from many different kinds of scientific inquiry. darwin's theory can only be accurate if the earth is very old.

What structures are found in a prokaryotic cell?

How can the carrying capacity for a population decrease?

Which of the following is a constructive process? deposition detachment transport plucking

Coal deposits were formed from? A. Plant life in ancient B. Ancient plankton and marine life C. Freshwater organisms from the last 100,000 years D. Modern plants and animals

According to the Hardy-Weinberg principals, which of the following can prohibit genetic equilibrium?

Rickettsia are obligate intracellular parasites that are transmitted by arthropods. In which of the following places would you most likely find the parasites living in the host organism during the course of infection? A.

How are viruses able to move between species?