Quiz about Molecular Biology Review

Question 1

What are the reactants of cellular respiration?

Accepted Answer

glucose and oxygen

Answer

glucose and carbon dioxide

Answer

carbon dioxide and water

Answer

carbon dioxide and glucose

Question 2

In which part of the cell does cellular respiration take place?

Accepted Answer

mitochondria

Answer

chloroplasts

Answer

cell membrane

Answer

ribosome

Question 3

In which part of the cell does photosynthesis usually take place?

Accepted Answer

chloroplasts

Answer

mitochondria

Answer

cell membrane

Answer

ribosome

Question 4

What are the reactants of photosynthesis?

Accepted Answer

carbon dioxide and water

Answer

glucose and oxygen

Answer

glucose and carbon dioxide

Answer

carbon dioxide and glucose

Question 5

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 6

Which is NOT produced during cellular respiration?

Accepted Answer

oxygen

Answer

carbon dioxide

Answer

water

Answer

energy

Question 7

Which statement is TRUE about photosynthesis and respiration?

Accepted Answer

All reactants of photosynthesis are products of respiration.

Answer

All products of photosynthesis are products of respiration too.

Answer

All reactants of photosynthesis are reactants of respiration too.

Answer

Products and reactants of photosynthesis and respiration are the same.

Question 8

Which statement is correct about photosynthesis?

Accepted Answer

Plants use carbon dioxide and water to make glucose and oxygen.

Answer

Plants use carbon dioxide and water to make proteins and carbohydrates.

Answer

Plants use oxygen and water to make glucose and carbon dioxide.

Answer

Plants use oxygen and glucose to release energy and produce carbon dioxide.

Question 9

Which biomolecule is important to repair damaged cells in the body?

Accepted Answer

protein

Answer

fats

Answer

carbohydrates

Answer

lipids

Question 10

Which molecule released by digestion is used during cellular respiration to provide energy to the body?

Accepted Answer

sugar

Answer

fat

Answer

amino acid

Answer

lipid

Question 11

Which best describes how organisms obtain energy from food?

Accepted Answer

Food reacts with oxygen to release energy.

Answer

Food reacts with water to release energy.

Answer

Food reacts with sunlight to release energy.

Answer

Food reacts with carbon dioxide to release energy.

Question 12

Which best describes the process of photosynthesis?

Accepted Answer

Carbon dioxide and water are converted into glucose and oxygen

Answer

Carbon dioxide and oxygen are converted into glucose and water

Answer

Oxygen and glucose are converted into carbon dioxide and water

Answer

Oxygen and water are converted into carbon dioxide and glucose

Question 13

Which best describes how organisms process materials to gain energy for life processes?

Accepted Answer

Sugars are broken down in a chemical reaction with oxygen to release energy.

Answer

Oxygen is broken down in a chemical reaction with sugars to release energy.

Answer

Vitamins and minerals are used to build complex molecules that store energy.

Answer

Vitamins and minerals are used to break down complex molecules that store energy.

Question 14

Which most accurately describes how plants and animals obtain the energy they need for growth and survival?

Accepted Answer

Molecules are broken down during respiration to release stored energy.

Answer

Molecules are broken down during photosynthesis to release stored energy.

Answer

Animals produce energy through photosynthesis, while plants produce energy through respiration.

Answer

Animals produce energy through respiration, while plants produce energy through photosynthesis.

Question 15

In cellular respiration, approximately 38% of the energy contained in glucose is released for an organism to use carrying out life processes. Which best explains what happens to the remaining 62% of the energy contained in glucose?

Accepted Answer

The energy is converted to thermal energy, which provides heat to the organism.

Answer

The energy is used to start the process of cellular respiration when more glucose is consumed by the organism.

Answer

The energy is used to convert leftover glucose into protein to be stored by the cells of the organism.

Answer

The energy is stored by the cells and released later when needed by the organim.

Question 16

What is the primary function of DNA in cells?

Accepted Answer

To store genetic information

Answer

To provide energy for cellular processes

Answer

To catalyze biochemical reactions

Answer

To transport molecules across the cell membrane

Question 17

Which enzyme is responsible for unwinding the DNA double helix during replication?

Accepted Answer

Helicase

Answer

DNA polymerase

Answer

Ligase

Answer

Topoisomerase

Question 18

In which cellular organelle does transcription occur?

Accepted Answer

Nucleus

Answer

Mitochondria

Answer

Ribosome

Answer

Golgi apparatus

Question 19

What is the role of mRNA in protein synthesis?

Accepted Answer

To carry the genetic code from DNA to the ribosome

Answer

To carry amino acids to the ribosome

Answer

To form the structure of the ribosome

Answer

To catalyze the formation of peptide bonds

Question 20

Which of the following is a stop codon in mRNA?

Accepted Answer

UAA

Answer

AUG

Answer

GCU

Answer

UGG

Question 21

What is the function of tRNA during translation?

Accepted Answer

To transport amino acids to the ribosome

Answer

To synthesize proteins

Answer

To replicate DNA

Answer

To modify mRNA

Question 22

Which molecule is produced during the process of transcription?

Accepted Answer

mRNA

Answer

DNA

Answer

tRNA

Answer

rRNA

Question 23

What is the significance of the promoter region in DNA?

Accepted Answer

It is the binding site for RNA polymerase

Answer

It signals the end of transcription

Answer

It codes for the start of translation

Answer

It is the site where DNA replication begins

Question 24

Which process involves the removal of introns from pre-mRNA?

Accepted Answer

Splicing

Answer

Translation

Answer

Transcription

Answer

Replication

Question 25

What is the role of ribosomes in the cell?

Accepted Answer

To synthesize proteins

Answer

To synthesize lipids

Answer

To produce ATP

Answer

To degrade waste materials

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science