Which of the following are nucleic acids?

chlorophyll and retinal

DNA and RNA

lipids and sugars

glucose and glycogen

Actinomycetes are bacteria that live in soil and give soil its moist, earthy smell. Actinomycetes break down cellulose and chitin even after soil conditions have become uninhabitable to many other organisms.

A building designed to reduce the amount of energy that reaches the building during an earthquake is called a a. fixed-base building. b. wood-frame building. c. base-isolated building. d. brick building.

The scientific attitude requires an open-minded humility because it involves a willingness to

What would occur if the muscle tissue failed within a damaged blood vessel? Vascular spasm would not occur, resulting in excessive blood loss. Coagulation would not occur, preventing fibrin formation.

If a person is given antibodies after a rattlesnake bite, this is considered: A. Active natural immunity B. Active artificial immunity C. Passive natural immunity D. Passive artificial immunity E. None of the above

What should be included in the thesis of a descriptive essay? A. a clear and dominant impression B. a position on a controversial issue C. a roadmap of a logical argument D. a factual sequential statement

A bacterial gene 900 nucleotides long can code at most for a polypeptide of how many amino acids?

A low area of land often forms between hills or mountains. This low area is called a valley. Which of the following might cause a valley to form? A. Waves from the ocean B. Basaltic lava flow from fissures C. Soil creep from freezing and thawing D.

The causes wind currents to move in circular patterns.

How can yeast cells be genetically modified to produce pyrethrin?