Free AP Biology Trivia Question and Answers

Question 1

Chemicals emitted by creatures that cause other members of the same species to exhibit a physiological or behavioral response are referred to as

Accepted Answer

pheromones

Answer

Pheromones are chemical signals released by an animal that affect the behavior or physiology of other members of the same species. They play crucial roles in communication, such as attracting mates, marking territory, signaling alarm, or coordinating social behaviors. Unlike hormones, which act internally, pheromones act externally between individuals.

Question 2

The sympathetic nervous system stimulates all of the following EXCEPT

Accepted Answer

increased peristalsis in the gastrointestinal tract

Answer

The sympathetic nervous system prepares the body for 'fight or flight' responses, which generally involves inhibiting non-essential functions like digestion. Increased peristalsis, the muscular contractions that move food through the gastrointestinal tract, is a function stimulated by the parasympathetic nervous system, which promotes 'rest and digest' activities. Therefore, the sympathetic nervous system would not stimulate increased peristalsis.

Question 3

Mycorrhizae fungi help the calypso orchid, Calypso bulbosa, flourish in close proximity to them. The fungi get within the flower's roots and feed off the plant's nutrients. Rare minerals, including phosphates, are concentrated by the fungi in the roots where the orchid may easily reach them. This instance exemplifies

Accepted Answer

mutualism

Answer

Mutualism is a type of symbiotic relationship where both organisms involved benefit from the interaction. In this example, the fungi benefit by obtaining nutrients from the orchid, while the orchid benefits significantly from the fungi's ability to concentrate rare minerals like phosphates, making them accessible. Since both the orchid and the fungi gain a survival advantage, this interaction is a clear case of mutualism.

Question 4

Which of the following traits apply to both fungi and bacteria?

Accepted Answer

Cell wall, DNA, and plasma membrane

Answer

Both fungi (eukaryotes) and bacteria (prokaryotes) possess a cell wall for structural support, DNA as their genetic material, and a plasma membrane that regulates the passage of substances into and out of the cell. While fungi have a nucleus and membrane-bound organelles, and can be multicellular, bacteria lack these features and are typically unicellular. Therefore, cell wall, DNA, and plasma membrane are common traits.

Question 5

Which of the subsequent trypsin-related claims is FALSE?

Accepted Answer

It is operative over a wide pH range

Answer

Trypsin is a protease enzyme that functions optimally in the alkaline environment of the small intestine, typically around pH 8. Like most enzymes, trypsin has a specific optimal pH range and will denature and lose activity if the pH deviates significantly from this range. Therefore, the claim that it is operative over a wide pH range is false, as its activity is highly sensitive to pH changes.

AP Practice Test

AP Practice Test

Free AP Biology Trivia Question and Answers