It is generally agreed that racial differences in life expectancy are due primarily to genetic factors.

a. True

b. False

Are Mammut mastodons the same species as Paleomastodons?

Summarize the process by which DNA, mRNA, and tRNA make proteins. Use these terms: replication, transcription, and translation

How are plant and animal cells alike?

Can a person get arthritis at 13

What words best describe the structure of phospholipids in the cell membrane? A. loosely-held in layers that vary greatly from cell to cell B. dynamic and loosely-held in two layers C. loosely-held in one layer D. fixed tightly in two layers E.

Which of the following is descriptive of pertussis? a. Initial stage resembling the common old b. Prolonged illness, sometimes symptoms may last for months. c. Bacterial disease treated with erythromycin c. All of these are descriptive of pertussis

Which statement about the cell membrane is true? A. It contains cellulose and sugars that are involved in communication. B. It is present in animal cells only. C. It is rigid and elastic for supporting the cell's shape. D.

Hailey needs to identify internal costs so she can price her product accordingly. Which cost will be part of Hailey's calculation? A. cost of endangering species B. cost of deforestation C. cost of air pollution D. cost of disposing by-products E.

What is the main difference between prokaryotic and most eukaryotes cells? A. Eukaryotic cells from multi-cell tissues, Prokaryotic cells are single cell. B. Eukaryotic cells from single cell, Prokaryotic cells are multi-cell tissues. C.

List (A) the primary materials necessary for and (B) The materials produced by photosynthesis