Q1. The __________ of a cell is the most critical factor in determining its function.
A. size
B. shape
C. age
D. chromosome number
Answer- shape
Q2. The _________ of the cell directs its overall activities as well as houses its genetic material.
A. nucleolus
B. endoplasmic reticulum
C. nucleus
D. centrosome
Answer- nucleus
Q3. Which feature is not a characteristic of the cell membrane?
A. It is made up of a phospholipid monolayer.
B. It can seal tiny breaks in itself.
C. It is selectively permeable and can regulate passage of material through it.
D. Many kinds of proteins are embedded in the membrane.
Answer- It is made up of a phospholipid monolayer.
Q4. Molecules that are soluble in ___________ can pass through the fatty acid portion of the cell membrane unassisted.
A. water
B. cholesterol
C. gases
D. lipids
Answer- lipids
Q5. The type of proteins that guide cells on the move in the bloodstream to their destination at a wound site are _____________.
A. cell adhesion molecules
B. desmosomes
C. gap junctions
D. tight junctions
Answer- cell adhesion molecules
Q6. Choose the correct statement about cell membranes.
A. Desmosomes function both as ion channels and to strengthen cell membranes.
B. Ion channels function as gates, opening or closing to specific ions, under certain conditions.
C. Ions can pass readily through any portion of the cell membrane.
D. Cholesterol is not a necessary component of the cell membrane.
Answer- Ion channels function as gates, opening or closing to specific ions, under certain conditions.
Q7. ____________ provide(s) both structural support and the enzymes needed to make proteins from amino acid building blocks.
A. peroxisomes
B. Golgi apparatus
C. ribosomes
D. mitochondria
Answer- ribosomes
Q8. The tubular transport system that moves molecules throughout the cell is/are the _______________.
A. mitochondria
B. endoplasmic reticulum
C. ribosomes
D. peroxisomes
Answer- endoplasmic reticulum
Q9. Choose the organelle that consists of microtubules and functions both in distributing chromosomes during cell division and in forming portions of cilia and flagella.
A. lysosome
B. mitochondria
C. vesicle
D. centrosome
Answer- centrosome
Q10. In what part of the nucleus does ribosome production occur?
A. within nuclear pores
B. in the chromatin
C. in the area of the nucleolus
D. Ribosome production does not occur in the nucleus.
Answer- in the area of the nucleolus
Q11. By which process does a glucose molecule move through a cell membrane protein carrier from a region of greater concentration to one of lower concentration?
A. diffusion
B. facilitated diffusion
C. active transport
D. filtration
Answer- facilitated diffusion
Q12. Cells use up to 40% of their daily energy expenditure engaged in what important process?
A. active transport
B. endocytosis
C. exocytosis
D. facilitated diffusion
Answer- active transport
Q13. During what phase of the cell cycle does DNA replication occur?
A. mitosis
B. prophase of mitosis
C. G2 phase
D. S phase
Answer- S phase
Q14. Chromosomes align midway between centrioles during what phase of mitosis?
A. prophase
B. metaphase
C. anaphase
D. telophase
Answer- metaphase
Q15. Which types of genetic control normally holds mitosis in check?
A. oncogenes
B. cell adhesion molecules
C. tumor suppressor genes
D. epidermal growth factors
Answer- tumor suppressor genes
Q16. The _____ of the cell has a function directly related to the synthesis of proteins.
A. mitochondrion
B. lysosome
C. ribosome
D. centriole
Answer- ribosome
Q17. The _____ is a system of membranes designed to transport molecules within and out of cells.
A. vacuole
B. chromatin
C. nucleolus
D. endoplasmic reticulum
Answer- endoplasmic reticulum
Q18. The organelle termed the _____ produces the microtubules important in cell division.
A. centrosome
B. nucleus
C. Golgi apparatus
D. cilium
Answer- centrosome
Q19. DNA can be found within chromosomes during division but prior to division DNA exists as long thin _____ strands.
A. RNA
B. chromatin
C. chromosome
D. flagellar
Answer- chromatin
Q20. Which chemicals on the surface of cells function to attach to and recognize hormones?
A. phospholipids
B. carbohydrates
C. proteins
D. steroids
Answer- proteins
Q21. The term _____ can be used to imply all of the chemical reactions within a cell.
A. metabolism
B. respiration
C. anabolism
D. catabolism
Answer- metabolism
Q22. In the liver, the _____ may play a role in producing the enzymes that help detoxify drugs.
A. mitochondria
B. rough endoplasmic reticulum
C. smooth endoplasmic reticulum
D. Golgi apparatus
Answer- smooth endoplasmic reticulum
Q23. The cristae are structures found within the _____ organelle.
A. ribosome
B. lysosome
C. mitochondrion
D. endoplasmic reticulum
Answer- mitochondrion
Q24. The _____ serves as the source of the flagellum in sperm.
A. nucleus
B. cilia
C. cell membrane
D. centriole
Answer- centriole
Q25. Which of the following does not belong with others?
A. diffusion
B. osmosis
C. active
D. passive
Answer- active
Q26. The movement of particles from an area of higher to lower concentration is called _____.
A. osmosis
B. diffusion
C. filtration
D. active transport
Answer- diffusion
Q27. The lysosomes within a cell contain hydrolytic enzymes capable of digesting particles within the cells.
A. TRUE
B. FALSE
C. Nothing can be said
D. None of the mentioned
Answer- TRUE
Q28. Ribosomes are comprised of RNA that has been synthesized directly by the nucleus.
A. TRUE
B. FALSE
C. Nothing can be said
D. None of the mentioned
Answer- TRUE
Q29. Vesicles differ from vacuoles in that vesicles are usually produced for the purpose of causing something to leave the cell.
A. TRUE
B. FALSE
C. Nothing can be said
D. None of the mentioned
Answer- FALSE
Q30. The Golgi apparatus plays a direct role in producing the complete cell membrane.
A. TRUE
B. FALSE
C. Nothing can be said
D. None of the mentioned
Answer- FALSE
Q31. Cells have the capability of synthesizing water during metabolism.
A. TRUE
B. FALSE
C. Nothing can be said
D. None of the mentioned
Answer- TRUE
Q32. Membranes are called selectively permeable because they allow most substances to enter the cell.
A. TRUE
B. FALSE
C. Nothing can be said
D. None of the mentioned
Answer- FALSE
Q33. The selective permeability of a cell membrane functions under active transport mechanisms.
A. TRUE
B. FALSE
C. Nothing can be said
D. None of the mentioned
Answer- TRUE