Which statement best describes respiration in spiral-shaped bacteria? A Spiral-shaped bacteria are facultative anaerobes but can switch to aerobic respiration when needed.
B Spiral-shaped bacteria are generally aerobic, but a subset of the group uses anaerobic respiration.
C Spiral-shaped bacteria only utilize anaerobic respiration.
D Spiral-shaped bacteria only utilize aerobic respiration.

Awater molecule is polar because there is an uneven distribution of these between the oxygen and hydrogen atoms.

Animal bodies (and even plant bodies for that matter) are complex enough that life couldn't exist without enzymes. enzymes are usually large, complex biological catalysts that are expensive to make. enzymes speed up the rate of chemical reactions without being used up during the reaction (they can be reused many times). they are highly specific in the reactions they regulate. knowing what enzymes are and how they function, why does this explain why complex life forms could not exist if there were no enzymes.

Why do carbohydrate molecules function so well as fuel for the body?