Asu Bio 181 Exam 1 Questions With Complete Solutions

ASU Bio 181 Exam 1 QUESTIONS WITH COMPLETE SOLUTIONS

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 Bio 181 ASU



1. What are the four significant macromolecules found in living organisms?

a) DNA, RNA, Lipids, Carbohydrates

b) Carbohydrates, Lipids, Proteins, Nucleic Acids

c) Lipids, Enzymes, Proteins, RNA

d) DNA, Proteins, Enzymes, Lipids



Correct Answer: b

2. What is the function of mitochondria in eukaryotic cells?

a) Protein synthesis

b) Genetic storage

c) Energy production

d) Detoxification



Correct Answer: c

3. Which structure is present in prokaryotic cells but not eukaryotic cells?

a) Nucleus

b) Ribosome

c) Plasmid

d) Mitochondria



Correct Answer: c

, 4. What does an enzyme do in a biological reaction?

a) Adds energy to the reaction

b) Slows down the reaction

c) Speeds up the reaction

d) Changes the reaction products



Correct Answer: c



5. Which model explains the structure of the plasma membrane?

a) Double-layer model

b) Fluid mosaic model

c) Lipid-only model

d) Transporter model



Correct Answer: b



6. What is osmosis?

a) Movement of solutes across a membrane

b) Movement of water across a membrane

c) Movement of molecules against a gradient

d) Breakdown of molecules in water



Correct Answer: b



7. Which stage of the cell cycle involves DNA replication?

a) G1 phase