Exam 3: Cells

Define osmosis. What is the primary driving force for osmosis?

The nucleus is enclosed by the nuclear _____.

Which of the following types of cells contain microvilli to increase the surface area of their plasma membrane for absorption?

A chemical agent or radiation that causes cancer is referred to as a/an

The basic chemical framework of the plasma membrane is the lipid _____.

Which of the following is necessary for simple diffusion to take place?

All of the following are associated with mitochondria EXCEPT

Cytosine is found in both DNA and RNA and it only hydrogen bonds with a complementary nitrogenous base called guanine.

A CGT base triplet within a gene on DNA is transcribed into mRNA as

The human somatic cells contain ____ chromosomes.

Osmotic pressure is the pressure that builds up inside a cell and resists net water movement across its membrane.

All of the following are nucleotide bases commonly found in DNA molecules EXCEPT

To initiate the transcription of a gene, RNA polymerase binds to a _____, which is usually found near the beginning of the gene.

The process by which worn-out cellular organelles are digested is called

The primary role that integral membrane proteins play in active transport is to

Protective ends of chromosomes called telomeres shorten with each cycle of cell division.

A base triplet of AUG on mRNA would match the anticodon _____ on tRNA

A semipermeable membrane, which permits water movement but not ion movement, separates two solutions. Solution A contains 0.9% NaCl and solution B contains 9.0 % NaCl. With respect to this system, which of the following statements would be true?

A solution containing the same concentration of water molecules and solutes as a red blood cell is considered to be a/an _____ solution.

In somatic cell division, the phase in which the DNA is replicated is called