Grass starts with 30,000 kcal of energy. A cheetah would acquire ( ? ) kcal of energy after it ate a zebra that had consumed the grass.

Which best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome

Nucleus has two lobes; contains granules of lysosomal enzymes; functions in attacking parasitic worms and plays complex roles in inflammatory diseases like allergies and asthma. what blood cells are described?

Which level of taxonomy has the fewest organisms?