Quiz about AP Biology Exam Review

Question 1

What type of transmembrane receptor is being shown?

Accepted Answer

G-protein coupled receptor

Answer

tyrosine kinase receptor

Answer

gated ion channel

Question 2

When glucose levels in the blood rise, your brain sends a signal to your pancreas. The pancreas releases insulin, which opens channels in cell membranes to allow glucose to enter the cell, lowering blood sugar levels.

Accepted Answer

Negative Feedback Loop

Answer

Positive Feedback Response

Question 3

What role do NADH and FADH2 (produced during Glycolysis and Krebs Cycle) play in cellular respiration?

Accepted Answer

they carry high energy electrons that eventually produce massive amounts of ATP

Answer

They carry high energy H+ ions for chemiosmosis

Answer

They are waste products and are pushed out of the cell

Answer

They don't play any role in cellular respiration and are used in photosynthesis only

Question 4

The process of glycolysis results in which of the following molecules?

Accepted Answer

NADH

Accepted Answer

Pyruvate

Accepted Answer

ATP

Answer

Glucose

Question 5

If the proton (H+) pump in the thylakoid was not working which molecule could not be made during the light reaction?

Accepted Answer

ATP

Answer

NADPH

Answer

Water

Answer

Oxygen gas

Question 6

What is one function of the other pigments besides chlorophyll, in the chloroplast?

Accepted Answer

to absorb different wavelengths than the chloroplasts

Answer

to block damaging wavelengths of light

Answer

to provide different colors to the leaves

Answer

to transfer energy to a separate photosystem beside the one using chlorophyll a and b.

Question 7

What is the primary function of the light reactions of photosynthesis?

Accepted Answer

To produce NADPH and ATP

Answer

To produce glucose

Answer

To use ATP

Answer

To produce RuBP

Question 8

What supplies the electrons that are lost in PS I?

Accepted Answer

the electrons from PS II

Answer

water

Answer

glucose

Answer

oxygen

Question 9

What is the function of NADP+?

Accepted Answer

It is an electron acceptor

Answer

It absorbs light

Answer

It is a light-reflecting pigment

Answer

It acts as long-term energy storage

Question 10

The light reactions occur in the ________ and the dark reactions take place in the ________.

Accepted Answer

thylakoid membrane / stroma

Answer

Chloroplast / thylakoid membrane

Answer

stroma / thylakoid

Answer

mesophyl / stomata

Question 11

Where does the Calvin cycle take place?

Accepted Answer

stroma of the chloroplast

Answer

thylakoid membrane

Answer

outer membrane of the chloroplast

Answer

interior of the thylakoid membrane

Question 12

When oxygen is released as a result of photosynthesis, it is a direct by-product of

Accepted Answer

splitting water molecules

Answer

reducing NADP+

Answer

chemiosmosis

Answer

electron transfer in photosystem II and I

Question 13

Where on an enzyme does the substrate bind?

Accepted Answer

active site

Answer

allosteric site

Answer

C-terminus

Answer

N-terminus

Question 14

In the electron transport chain of cellular respiration, where is the electrochemical gradient of protons generated?

Accepted Answer

intermembrane space

Answer

cytosol

Answer

cristae

Answer

matrix

Question 15

The function of fermentation is to regenerate ______ so that glycolysis can continue to produce ATP.

Accepted Answer

NAD+

Answer

glucose

Answer

lactic acid

Answer

ethanol

Question 16

During chemiosmosis

Accepted Answer

ATP is synthesized when H+ ions move through a channel in ATP synthase

Answer

H+ ions serve as the final electron acceptor

Answer

a concentration gradient is generated when H+ ions are passively transported from the matrix to the intermembrane space of the mitochondrion

Answer

energy is released as H+ ions move freely across the mitochondrial membrane

Question 17

Identify the pairing and number of bonds in DNA double helix

Accepted Answer

A pairs with T (2 bonds) & G pairs with C (3 bonds)

Answer

A pairs with G (2 bonds) & T pairs with C (3 bonds)

Answer

A pairs with T (3 bonds) & G pairs with C (2 bonds)

Answer

A pairs with G (3 bonds) & T pairs with C (2 bonds)

Question 18

Which two functional groups are always found in amino acids?

Accepted Answer

carboxyl and amine

Answer

amine and sulfhydryl

Answer

hydroxyl and carboxyl

Answer

phosphate group and nitrogenous base

Question 19

The endomembrane system includes membrane-based organelles which work together to create, modify, and export cell products like proteins and lipids. These include:

Accepted Answer

Endoplasmic reticulum, Golgi apparatus, and lysosomes

Accepted Answer

Nuclear envelope and several vesicle types

Answer

Mitochondria, chloroplasts, and peroxisomes

Answer

Cytoskeleton, cell wall, and plasma membrane

Question 20

White blood cells engulf bacteria through what process?

Accepted Answer

phagocytosis

Answer

pinocytosis

Answer

osmosis

Answer

exocytosis

Question 21

Which of the following processes occurs in the mitochondria and is crucial for ATP production?

Accepted Answer

Krebs Cycle

Answer

Glycolysis

Answer

Photosynthesis

Answer

Fermentation

Question 22

What is the role of ribosomes in a cell?

Accepted Answer

Protein synthesis

Answer

DNA replication

Answer

Lipid synthesis

Answer

Carbohydrate breakdown

Question 23

In an experiment, a plant is exposed to light of different wavelengths. Which color of light is least effective for photosynthesis?

Accepted Answer

Green

Answer

Red

Answer

Blue

Answer

Yellow

Question 24

Which of the following best describes the function of enzymes in biological reactions?

Accepted Answer

They decrease the activation energy required for the reaction.

Answer

They increase the activation energy required for the reaction.

Answer

They are consumed in the reaction.

Answer

They act as a substrate in the reaction.

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