Look at the bean from Days 4-6. Use these data to explain how natural selection changed the number of dark red walking beans over time.

Which answer best indicates the dynamic balance of an ecosystem? a. space and food vs. temperature and water b. number of plants vs. number of animals c. number and variety of organisms vs. changing environment d. number of organisms vs.

Which statements apply to glycolysis? Splits a glucose molecule into pyruvic acid Occurs without oxygen present Happens only in animal cells Occurs in all living things

Are the bones of the limbs arranged in a smilie or in a very different way in each animal

A high school student starts vomiting and goes to the school nurse. the student asks the nurse what part of his brain makes him vomit. what will the nurse tell the student must be stimulated in order for vomiting to occur?

Suppose a bacterial had a mutated repressor protein that could not bind to the lac operator. how, might this affect regulation of the operon

Which will have a better chance of surviving a major change in the environment where it lives: A) A bacteria strain with only twenty minutes between generations B) A large mammal (like bears) with decades between generations Explain your choice

What are the three-letter "words"of mRNA

What are the two ways that carbon enters into the atmosphere?

If an animal cell is placed in distilled water, it will A) remain the same size. B) shrink. C) swell and eventually explode. D) swell, but stop when the cell wall prevents further expansion.

What atre three types of nerve fibers?