Active transport occurs when molecules are moved across a semi-permeable membrane and

a concentration gradient.

A) down

B) up

Which class of organic compounds do cells use to store information? nucleic acids proteins lipids carbohydrates

Organisms use different processes to transport materials in and out of cells. When humans spend long periods of time in water, the pads of our fingers and toes often become wrinkled.

Which of the following is NOT a benefit of biodiversity? A) greater variety of food sources B) aesthetic or personal enjoyment C) sources of new products D) simpler classification schemes

Three differences between prokaryotic and eukaryotic cells

Give an example of a trait that is controlled by more than one gene

How can growth of a population be slowed by its own numbers?

How are sessile leaves different from ordinary leaves?

8. In the S-Phase of the cell cycle; DNA is replicated. Why would eukaryotic cells need to replicate DNA before the nucleus divides? A. To trigger genetic transfer of DNA. B. To encourage rapid mutation rates in the organism. C.

The patient has been placed on a nitroprusside drip for the treatment of a hypertensive crisis. which mechanism of action does the nurse know is true for nitroprusside?

How many oxygen molecules (O₂) are required each time a molecule of glucose (C₆H₁₂O₆) is completely oxidized to carbon dioxide and water via aerobic respiration,? A) 1 B) 3 C) 6 D) 12 E) 30