Which of the following is true of DNA?

A. There are six nitrogenous bases involved.

B. Cytosine can pair with guanine and adenine.

C. There are four nitrogenous bases involved.

D. Adenine always pairs with guanine.

Which unit of measurement is used in the metric system? Tons Kilograms Miles Gallons

Why is it advantageous for the cell membrane to be fluid in nature?

RNAi a. is any chemical that inhibits transcription. b. uses short pieces of double-stranded RNA to direct the degradation of specific RNA transcripts. c. is the form of mRNA that initiates translation in most pathogenic bacteria. d.

The surgical term that actually means male sterilization is

The richter magnitude of an earthquake is determined from the

If the trade in tiger products is banned, tiger reserves are guarded by well equipped staff, communities abutting tiger habitat are given a stake in protecting tigers, and the makers of traditional medicines can be persuaded that tiger parts are not

Cell walls composed of polysaccharide are found in

Which of the following factors are involved in the formation of a new species? a. behavioral isolation, geographic isolation, and temporal isolation b. relative dating, index fossils, and radioactive dating c.

What is thin layer chromatography

What is a community of organisms and their enviornment