Biology Quizzes, Questions & Answers

Recent Quizzes

Bio Test 3 (Part 2)

Bio test part 2 of 5. 55 question test.

Questions: 11 | Attempts: 89 | Last updated: Jul 2, 2024

Sample Question
Repressor proteins

Prevent binding of RNA polymerase to DNA.

Cause the DNA regions that contain the operator to twist or loop.

Inactivate operon genes when their products are not required.

Bind to sets of operators.

All of these.

Bio Test 3 (Part 1)

Bio test part 1 of 5. 55 question test.

Questions: 11 | Attempts: 118 | Last updated: Feb 14, 2024

Sample Question
The significance of Fred Griffith's experiment in which he used two strains of Streptococcus pneumoniae is that

Harmless and pathogenic bacteria function differently in mice than in other organisms.

It demonstrated that harmless bacteria can become transformed into disease-causing bacteria by some association with pathogenic bacteria.

It established that pure DNA extracted from disease-causing bacteria transformed harmless strains into killer strains.

Dead cells lose their genetic information.

The genetic material is DNA, not protein.

Bio Test 2 (Part 5)

A biology exam, part 5 of 5. 55 question test. Exam involving topics such as photosynthesis and cellular respiration.

Questions: 11 | Attempts: 123 | Last updated: Apr 9, 2024

Sample Question
Some dogs have erect ears; others have drooping ears. Some dogs bark when following a scent; others are silent. Erect ears and barking are due to dominant alleles located on different chromosomes. A dog homozygous for both dominant traits is mated to a droopy-eared, silent follower. The expected phenotypic ration in the F1 generation is

9:3:3:1

100 percent of one phenotype

1:1

1:2:1

None of these

Bio Test 2 (Part 3)

A biology exam, part 3 of 5. 55 question test. Exam involving topics such as photosynthesis and cellular respiration.

Questions: 11 | Attempts: 73 | Last updated: Mar 21, 2022

Sample Question
What is the process by which NADH transfers electrons to oxygen?

Glycolysis

Acetyl-CoA formation

The Krebs cycle

Electron transfer phosphorylation

Substrate-level phosphorylation

Bio Test 2 (Part 2)

A biology exam, part 2 of 5. 55 question test. Exam involving topics such as photosynthesis and cellular respiration.

Questions: 11 | Attempts: 120 | Last updated: Apr 19, 2024

Sample Question
Which of the following is true concerning the C4 pathway?

It produces large amounts of carbohydrates.

It feeds into the C3 pathway.

It is the mechanism of photorespiration.

It involves the activity of RuBP.

All of these.

The Biology Behind Plants - Quiz

How do plants work? Can you tell how do they reproduce, breathe, or eat? All that is explained by plant biology. This is exactly what this quiz is about. Check your understanding of the topic from this quick but knowledgeable...

Questions: 10 | Attempts: 312 | Last updated: Mar 21, 2023

Sample Question
The ultimate source for food for most organisms is

The sea.

The soil.

A certain group of food crops.

The sun.

The network of metabolic pathways found in all living organisms.

7th Grade Biology

We have all carried out an experiment to show us how photosynthesis occurs and what the basic requirements to ensure its success are. The questions below should be done by you and your lab partner. Ensure you answer them all...

Questions: 5 | Attempts: 9009 | Last updated: Oct 24, 2024

Sample Question
Which of the following is the basic unit of life in all living organisms?

Atom

Molecule

Cell

Tissue

AQA Module B1 Biology (Drugs)

AQA module B1 Biology (Drugs)

There are a lot of drugs prescribed to different patients all around the world. In our previous classes we have been able to cover the different drugs in existence prescribed and un prescribed, use and effects. Take up the...

Questions: 17 | Attempts: 765 | Last updated: Mar 22, 2023

Sample Question
A recreational drug is

A medicine

Taken for pleasure

Taken for relaxation

Taken for stimulation

Biology Final Exam Chapter 5 Practice Quiz

biology final exam chapter 5 practice quiz

Biology review. final exam review chapter 5

Questions: 10 | Attempts: 944 | Last updated: Mar 22, 2023

Sample Question
If someone sitting at the other end of the restaurant smokes a cigarette, you may still breathe in some of that smoke. the movement of smoke through the air of the restaurant is an example of what type of transports

Osmosis

Diffusion

Facilitated diffusion

Active transport

Biology Final Chapter 4

biology final chapter 4

final exam review. final exam review for chapter 4

Questions: 5 | Attempts: 157 | Last updated: Aug 22, 2024

Sample Question
Emily would like to film the movement of chromosomes during cell division. her best choice for a microscope would be a

Light microscope, because of its magnfying power

Transmission electron microscope, because of its resolving power

Scanning electron microscope because the chromosomes are on the cell surface.

Light microscope becuase the specimen must be kept alive

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