The taxon "species" may be defined by the following two concepts: reproductive isolation and

Which of the following is true about chromosomes? a. more complex animals have more chromosomes b. chromosomes are found in many places of the cell. c. sperm and eggs have half the chromosomes as other cells. d.

If carbon dioxide and water were abundantly available to a heterotrophic prokaryotic cell, would it be possible for the cell to use them as a food source? 1:sunlight would be needed for the reaction to occur, so they would not be a food source.

Cells are limited in size by their surface areas and?

Mutations in two important cancer-critical genes, encoding p53 and Rb, respectively, are commonly found in cancers. What type of mutations are these usually expected to be?

What organisms were dominant after the five mass extinctions?

Homologous structures (Group of answer choices): A. are also called analogous structures. B. have identical functions. C. are shared by organisms of the same genus. D. have fully divergent functions. E.

Which of the following is true of an enzyme? (mark all that apply) a. it is a protein b. it is a catalyst c. it binds to many different substances d. it is small compered to its substrates

Which term would be applied to a regulatory condition that occurs when protein is associated with a particular section of DNA and greatly reduces transcription? A) induction B) negative control C) stimulation D) positive control E) activation

1. The reproductive parts of angiosperms are located within the called the and the female part is called the The male part is 2. In angiosperms, pollen produces cells. Pollen sticks to the female and travels down the style to the ovary.

Why would over-inflating the cuff of the sphygmomanometer be a problem for the patient?