Producers are generally found at the beginning
of a food chain. Which statement best explains
why this is true?
(1) Producers are usually smaller in size than
consumers.
(2) Producers do not rely on other organisms
for food.
(3) There are always more consumers than
producers in food chains.
(4) Consumers are always more complex organisms
than producers
A lion cub resembles its parents because it
inherits genes that produce
(1) DNA identical to all of the DNA found in
both parents
(2) proteins identical to all of the proteins found
in both parents
(3) ATP identical to some of the ATP found in
each parent
(4) enzymes identical to some of the enzymes
found in each parent
If body temperature is too high, some blood
vessels increase in size and sweat glands
will excrete sweat, resulting in a lower body
temperature. These changes are an example of
(1) a learned behavior
(2) feedback mechanisms
(3) an inherited disorder
(4) genetic mutations