What is dna in biology

Which is a common characteristic of extrusive igneous rock? a. cools slowly b. forms crystals c. contains small grains d. contains large grains

What is the difference between Southern and Northern hybridizations? a. southern blots hybridize a DNA probe to a digested DNA sample but northern blots hybridize a DNA probe to, usually, mRNA b.

Table salt is a compound made of sodium and chlorine. Could you separate the sodium from the chlorine by crushing the salt crystals? Explain.

Which is not a function controlled by the brain stem? A thinking Brespiration c digestion D breathing

Why is the photosynthesis equation often written with several arrows?

What is the role of epidemiology? A. To learn which organisms cause disease. B. To learn how to treat and prevent various diseases. C. To learn what diseases can be caused by respiratory pathogens. D.

The concept that the present is the key to the past is part of the ... a. type of unconformity b. law of superposition c. law of crosscutting relationships d. principle of uniformitarianism

1. Butter is an example of A/a carbohydrate. B/a polar molecule. C/ D/a saturated fat. an unsaturated fat.

Some fish species, such as tilapia, place the fertilized egg clutch into the mouth of the female. How would the reproductive strategy ensure survival of the species? A. By ensuring fertilization of all eggs B. By producing higher quality eggs C.

What do we do with waste materials? Waste water sewage industrial pollutants the amount of waste produced grows each year the increasing amount of waste msterials also required a growing need for professionals in the field of