The most common microscope used in high school biology laboratories is the compound light

microscope.

A) True

B) False

Determine the actual probability in percent, that each genotype occurred.

Bradley decides one day to run a marathon without any training. After ten minutes has elapsed and Bradley has run half a mile, he begins to get cramps in his thighs. He is also breathing very rapidly.

A heterotroph is an organism that

Methane gas is burned to provide heat. The chemical reaction for this process is shown in the equation below. CH4 + 2O2 CO2 + 2H2O + energy What are the products in this chemical reaction? A. O2 + CO2 + energy B. CO2 + CH4 C. CO2 + 2H2O + energy D.

From each drop-down list, choose the flaw for each design. A student is testing whether light is required for corn seeds to germinate. He plants one group of seeds in soil and leaves the other group exposed to light, sitting on moist paper towels.

Procaryotes are distinguished from eukaryotes on the basis of what structure? (More than one answer is correct) a. a membrane-bound nucleus b. plasmid DNA c. RNA molecules d. presence of mitochondria or chloroplasts

Many higher organisms must maintain a strict internal temperature. There can be serious consequences if the internal temperature deviates even slightly.

Which is not an effect of smoking on the cardiovascular system? it contributes to atherosclerosis. it increases the blood's tendency to clot. it increases blood cholesterol. it increases the size of arteries and veins?

Which axis indirectly shows the relative amount of dna per cell?

Why are metals good conductors of electricity but covalent compounds are poor conductors