Exam 3: Cell Structure and Function

The instructions for protein synthesis are encoded in the

A cell that normally has 46 chromosomes undergoes mitosis and cytokinesis to produce two cells,each with 23 chromosomes.

Long,whiplike projections,composed of microtubules,that project from the cell and function in cell locomotion are

A cell that uses a large amount of energy is likely to have an increased number of

A substance,such as glucose,that passes through the cell membrane by facilitated diffusion,requires a carrier molecule and energy from ATP.

In protein synthesis,transcription is the transfer of genetic information from

Cells in the respiratory tract that move mucus over their surface are most likely to have _____ on the surface.

When a cell with an intracellular glucose concentration of 5 percent is placed in a 10 percent glucose solution,glucose molecules move from the 10 percent extracellular solution into the 5 percent intracellular solution by osmosis.

What is the term for the type of passive transport in which a carrier molecule is required?

DNA and RNA are both found inside the nucleus.

In osmosis,water moves from a(n)_____ solution to a(n)_____ solution.

Nuclear division that occurs in the production of eggs and sperm is called

Cytokinesis occurs during

The dark-staining structure that contains RNA within the nucleus is the

A "generalized cell" is

Most of a cell's life cycle is spent in a nondividing phase called

Nuclear division that occurs in somatic cells is called

Lipids in the cell membrane act as receptor sites for hormone action.

What is the term for the specific type of molecule that transcribes the genetic code and carries it to the cytoplasm?

Individuals engaged in prolonged substance abuse are likely to have increased smooth endoplasmic reticulum,particularly in the liver.