True or false: one enzyme can catalyze only one specific type of reaction.

What is a cladogram? A) a group with no shared traits B) a diagram showing evolutionary relationships C) a group of closely related species D) a trait an ancestor did not have

The students concluded that pea plants grew better in compost than did melon plants. Which of the following best addresses the validity of the conclusion made by the students?

What organisms did Darwin study to compare development between species to support evolution?

In flowering plants the egg occurs inside the: cone stamen archegonium ovary

In a Punnett square: A. all the possible types of sperm are lined up either horizontally or vertically. B. all the possible types of eggs are lined up either horizontally or vertically. C. the results show the offspring's expected genotypes. D.

Which statement best describes messenger RNA? [Multiple Choice] A. It transfers polypeptides to the nucleus. B. It's chemically more complex than DNA. C. It had one Oxygen atom less than DNA. D. It's composed of a single strand of nucleotides.

An allele that masks another allele is known as

Is there penicillin in acyclovir

Noah wants to show the largest source of carbon on Earth for his school project. According to his research, in which form is most of the carbon on Earth stored?

True or false: most drugs are eliminated by the kidneys in urine although some are excreted in saliva, sweat, or exhalation. a. True b. False