In cells, the activity of enzymes is often regulated by other enzymes or molecules. Why

is this necessary?

In the equation CO2 is a?

Which statement best compares aerobic and anaerobic respiration

Why can fish and other water animals and plants breath in water?

What is the specific location of a gene on a chromosome

What is the oxidizing agent in the following reaction? Pyruvate + NADH + H + → Lactate + NAD+ a. oxygen b. NADH c. lactate d. pyruvate

In humans, normal color vision is dominant over colorblindness. A colorblind male marries a female who is a carrier for color blindness. What is the probability that a colorblind child would be born to these parents?

What is the dependent variable? Also what is the Testing Variable.

Statistics about the climate in a tundra ecosystem were collected for 30 years. which hypothesis about a population of caribou could be made based on the climate data collected? a. caribou calf survival is directly related to annual rainfall amounts.

Since plant cells do not have centrioles, how do they make spindle fibers during mitosis?

Plants use sunlight to produce some ATP during photosynthesis. How do plants produce ATP when the Sun is not out? a. Plants are secondary consumers. b. Plants also use cellular respiration. c. Plants extract ATP from the stars. d.