2023 Edition

Biology Practice Exam

Try this free biology practice test to see how prepared you are for a biology exam. Whether you are in high school or college, you are likely to have a biology requirement. Biology tests cover such subjects as the chemistry of life, evolution, genetics and ecology.

For a more comprehensive study of biology, try our 400 question Biology Practice Exam.



1. The net effect of photosynthesis, chemically, is reduction, leading to the formation of which products?
2. A cell membrane is ______________?
3. A cell uses which of the following to accelerate chemical reactions enabling its metabolic machinery to operate?
Study Online Instantly
Practice Exam - ACE-Personal Trainer
Click to Save 50% Now
4. Which of the following is not part of the metabolic sequence?
5. Which of the following are NOT organelles found in animal cells?
6. Light initiates different types of cellular reactions. Which of the following responses to light converts the energy from light into a gain of potential energy?
7. The functional unit of heredity is the _____________.
8. DNA exists in the form of __________ strands of DNA coiled about each other.
9. Genes are located within the cytoplasm of the cell.
10. Genetic information is transferred from the nucleus to cytoplasm by way of _______________.
11. When sexual reproduction occurs in multicellular organisms, a process takes place before cells fuse whereby a cell is left with half of its chromosomes, enabling the creation of a cell with a characteristic chromosome number. What is this process called?
12. Which of the following represents the largest group of biological classification?
13. There are two types of cells, eukaryotic and prokaryotic. Which of the following cellular structures are found in both types of cell?
14. What it is the name given to specialized structures within cells responsible for carrying out specific functions such as providing energy and producing hormones?
15. All of the following are similarities between unicellular organisms and multicellular organisms, except _____________.
16. How many chromosomes does an individual human person have?
17. A multicellular organism is:
18. The term thallus refers to the plant-like structure of which of the following organisms?
19. Single-celled protists with animal-like behavior belong to the phylum ______________.
20. The bodies of all insects have _______ major divisions.
21. Sterile female honey bees are called _________________.
22. Which of the following organisms is a vertabrate?
23. Many animals protect themselves with an exoskeleton. Which of the following is an example of an animal with an exoskeleton?
24. Locomotion in Metazoa is usually due to the contraction of what?
Study Online Instantly
Practice Exam - ACE-Personal Trainer
Click to Save 50% Now
25. In normal sexual reproduction, two mature gametes fuse to form a(n) _____________.
26. In humans, how do the sex chromosomes differ between males and females?
27. Changes in the genetic makeup of an organism may be due to which of the following?
28. The phrase "survival of the fittest" is an alternate phrase expressing which of the following principles?
29. Which of the following directly (as opposed to indirectly) supports Charles Darwin's theory of evolution?
30. ___________ occurs when organisms of different species mate and form offspring.