MCAT Biology (Princeton Review) Questions and Answers | Latest Version | 2024/2025 | Rated A+
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Module
MCAT Biology
Institution
MCAT Biology
MCAT Biology (Princeton Review)
Questions and Answers | Latest Version
| 2024/2025 | Rated A+
What is the primary function of mitochondria in eukaryotic cells?
The primary function of mitochondria is to produce ATP through oxidative phosphorylation.
What is the role of ribosomes in a c...
MCAT Biology (Princeton Review)
Questions and Answers | Latest Version
| 2024/2025 | Rated A+
What is the primary function of mitochondria in eukaryotic cells?
✔✔The primary function of mitochondria is to produce ATP through oxidative phosphorylation.
What is the role of ribosomes in a cell?
✔✔Ribosomes are responsible for synthesizing proteins by translating mRNA sequences.
What does the term "homeostasis" refer to in biology?
✔✔Homeostasis refers to the maintenance of a stable internal environment within an organism
despite external changes.
What is the main purpose of the cell membrane?
1
,✔✔The cell membrane regulates the movement of substances in and out of the cell and provides
structural support.
What are the building blocks of proteins?
✔✔Amino acids are the building blocks of proteins.
What is the role of the enzyme DNA polymerase in DNA replication?
✔✔DNA polymerase synthesizes new DNA strands by adding nucleotides complementary to the
template strand.
What is the function of chloroplasts in plant cells?
✔✔Chloroplasts conduct photosynthesis, converting light energy into chemical energy in the
form of glucose.
What is the difference between prokaryotic and eukaryotic cells?
2
,✔✔Prokaryotic cells lack a nucleus and membrane-bound organelles, while eukaryotic cells
have a nucleus and organelles enclosed by membranes.
What is the central dogma of molecular biology?
✔✔The central dogma states that genetic information flows from DNA to RNA to protein.
What is the purpose of the Krebs cycle in cellular respiration?
✔✔The Krebs cycle generates electron carriers (NADH and FADH2) and ATP, and releases
carbon dioxide as a byproduct.
What are the stages of the cell cycle?
✔✔The stages of the cell cycle are G1 (growth), S (synthesis of DNA), G2 (preparation for
mitosis), and M (mitosis).
What is the role of enzymes in biochemical reactions?
3
, ✔✔Enzymes act as catalysts to increase the rate of biochemical reactions by lowering the
activation energy.
What is the primary purpose of cellular respiration?
✔✔The primary purpose of cellular respiration is to convert glucose and oxygen into ATP,
carbon dioxide, and water.
What is the function of the Golgi apparatus in a cell?
✔✔The Golgi apparatus modifies, sorts, and packages proteins and lipids for secretion or
delivery to other organelles.
Maltose ✔✔Glucose + Glucose
Sucrose ✔✔Glucose + Fructose
Lactose ✔✔Glucose + Galactose
4
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