What types of molecules cannot easily go through the cell membrane

Which macromolecule is responsible for directing growth in living organisms

What are the general structures of neutral fats, phospholipids, and steroids? give one or two important uses of each of these lipid types in the body?

Which of the following best describes a prokaryotic cell? A. A cell that contains a membrane-bound nucleus B. A cell that is not surrounded by a cell membrane C. A cell that does not contain membrane-bound organelles D.

Ziggurats were made out of all of the following materials except a. mud. c. water. b. granite. d. grass

Which of the following is the name of the three-base sequence in the mRNA that binds to a tRNA molecule? P site codon anticodon CCA binding site

If a small founder population of 12 people ends up on a small island, and one member of the population had a mutation that creates a new allele, what is the likelihood that the allele will be eliminated from the population?

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.