Which definition is the best for "semipermeable membrane"?

The time it takes the Moon to go through a complete cycle of phases is closest to days. OA) 20 OB) 24 OC) 27 OD) 30

Organisms that can't live in the presence of oxygen are called facultative anaerobes. a. True b. False

Animals are able to run because they can change the chemical energy in food into

Which statements are true of a white dwarf? A. It has a red shell. B. It is the result of the core collapse of a low-mass star that sheds its outer layers. C. It emits massive amounts of light compared with other stars. D.

What is the difference between the sun's rotation and earth rotation?

Select the correct answer, in Watson's Little Albert Experiment, what does the loud metal clanging noise represent? A. a neutral stimulus B. an unconditioned stimulus C. an unconditioned response D. a conditioned stimulus E. a conditioned response

In a population of turtles, the allele that causes a yellow shell (y) is dominant to the allele that results in a red shell (y). if the dominant allele is present in the population at the 0.

An allele is one of the alternative forms of a gene that governs a trait. If a fern plant is heterozygous for a particular trait, how can the alleles that control that trait be described? A. one dominant, one recessive B. two dominant C.

In order to survive, all organisms must carry out 1) autotrophic nutrition 2) heterotrophic nutrition 3) enzyme-controlled reactions 4) the process of reproduction

Compare and contrast a plant cell with an animal cell. Make sure you give at least two comparisons and two differences.