Which describes a constant in an experiment?

A.

the variable changed by the experimenter

B.

the quantity that must remain the same

C.

the variable that changes in response to the experiment

D.

the statement that is worded to test the experiment

Select the correct statement about the regulation of gastric secretion. A) Vagus stimulation of the stomach results in decreased secretion of gastric juice. B) The presence of food in the stomach prevents hormonal control of gastric secretion.

Scientists tried inserting the jellyfish gene that codes for luminescence into bacteria. Not all bacteria where transformed. Which bacteria were transformed? Only the bacteria that do not glow in the dark were transformed.

Why are the size of our muscles partly an acquired trait and partly dependent on DNA?

Each person's dna contains certain genes that code for specific traits. list at least 15 traits that make up your body's appearance. your traits are things like eye color, arm length, or foot size.

What impact can people make on water conservation

Which of these organisms would have the best chance of becoming part of the fossil record?

What do genetic commonalities show?

What is a continental margin?

What current will an ammeter register if 960C of charge flow through it in 2 minutes?

Listen to the three examples of sound and related spectrogram. Make one observation about each of the three spectrograms.