Parasitism is a relationship in which one species benefits and the other does not benefit. True or False?

Okazaki fragments are: 1) short pieces of DNA resulting from restriction endonuclease digestion of DNA. 2) short pieces of newly-made DNA on the discontinuous strand. 3) short pieces of DNA resulting from the exonuclease activity of DNA polymerase I.

How does Propionibacterium acnes cause acne in humans? A. Overuse of antibiotics can cause bacteria to clog pores in humans. B. This type of bacteria is found on the human skin, and it can clog pores. C.

What do scientists think may have caused the bizarre behavior exhibited during the Salem Witch Trials? a. Mushrooms c. Witchcraft b. A grain fungus d. Bacteria

Which best describes the trophic level of an organism? A. the number of calories it consumes B. the amount of energy it produces C. its life cycle from birth to death D. its position in a food chain

Which statement describes what the density of an object represents. Answer:density is the amount of matter in a certain volume

The plasma membrane is composed of a phospholipid bilayer with embedded proteins. What is one of the functions of the embedded proteins? A. protecting the cell from physical harm B. defining the cell's structure and shape C.

Which of the following species is a K-selected species A. redwoodtrees B. fruits flies C. algae D. grasshoppers

What is another name for carbohydrates? a atp b fats c glucose (sugar) ?

Generally, animals cannot digest (hydrolyze) the glycosidic linkages between the glucose molecules in cellulose. How then do cows get enough nutrients from eating grass? A. They have to eat a lot of it. B.

The process in which body cells are duplicated in order to grow and repair body tissue is called what