What molecule forms the cell membrane?

a. proteins

b. carbohydrates

c. nucleic acids

d. phospholipids

Why are some people left handed and some right handed

Match each type of line or symbol, common to geologic maps, to its description. 1. fault line very light and thin line 2. contact line very dark and thick line 3. axis fold looks like a stubby T 4. strike and dip slightly dark and thick line

Which of the following is an example of hybridization? a. Special enzymes are used to break DNA strands at certain locations. b. Levi crosses a horse with a donkey to create a mule. The mule is stronger than both of its parents. c.

The process by which a long term memory becomes durable and stable is called

What type of mutation in nucleotide 4 would produce the same amino acid?

The overall population of a species decreased. What could have occurred to make this happen? The immigration rate increased, while the death rate decreased. The birth rate decreased, while the death rate increased.

Which of the following terrestrial biomes cannot be found in the United States? A: temperature deciduous forest B: tundra C: desert D: grassland/prairie

Which of these food sources does the bald eagle not feed on? plants fish carrion mammals

what will happen to a base isolated building when seismic wave strike the building during an earthquake

The shape and size of a birds beak would mostly be affected by what environmental limiting factor