cellular DNA is stored in the blank, an organelle that also acts as the brain of the cell and directs all cellular activities

Suppose there is "3500" kj of energy available in the leaves. the rat eats the leaves, and the fox eats the rat. how many kilojoules of energy are available for the fox to use?

Why are the platypus, brown bear, lion, and house cat thought to be related to each other?

Why are planets and stars round

State two effect of adrenaline on the body

When a natural events such as hurricanes or earthquake separate a population this is called

Which of the following statements concerning enzymes is FALSE? A) They are usually, but not always, proteins. B) They function best at 37°C. C) They can be denatured if the pH of their environment is too high or too low.

Why do breeders look at pedigrees before breeding dogs? Or in different words, how do pedigrees play a part in breeding dogs?

The fruiting body in Agaricus is called

Describe two ways in which genetic recombination occurs during meiosis.

Survival of at least a few members of a population after a major environmental change is most dependent on 1) the population having an individual that is adapted to the original environment 2) the population having an individual that is adapted to