About this Study Set
This study set covers Biology through
18 practice questions.
Testing in-depth knowledge of foundational biological principles, focusing on empirical evidence and established theories. Every question includes the correct answer so you can learn as you go — pick any format above to get started.
Questions & Answers
Browse all 18 questions from the
Advanced Concepts in Introductory Biology study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
Which of the following is the primary mechanism by which ATP synthase generates ATP during oxidative phosphorylation?
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A
Direct phosphorylation of ADP by a substrate molecule.
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B
Chemiosmosis, driven by a proton gradient across the inner mitochondrial membrane.
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C
Photophosphorylation, using light energy to create a proton gradient.
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D
Substrate-level phosphorylation in the cytoplasm during glycolysis.
2
The process of transcription in eukaryotes involves the synthesis of RNA from a DNA template. What is the role of the TATA box binding protein (TBP)?
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A
It binds to the promoter region of a gene and recruits other transcription factors.
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B
It is responsible for proofreading the newly synthesized RNA strand.
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C
It ligates Okazaki fragments during DNA replication.
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D
It unwinds the DNA double helix to allow for replication.
3
Which theory of evolution posits that evolutionary change occurs through the accumulation of small, gradual changes over long periods, interspersed with brief, rapid bursts of change?
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A
Lamarckian inheritance
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B
Gene-flow theory
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C
Punctuated equilibrium
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D
Genetic drift
4
The endomembrane system in eukaryotic cells includes several organelles. Which of the following is a primary function of the smooth endoplasmic reticulum?
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A
Protein synthesis and modification
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B
Lipid synthesis, detoxification, and calcium storage
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C
Formation of lysosomes and peroxisomes
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D
Cellular respiration and ATP production
5
In the context of cellular respiration, what is the net yield of ATP molecules produced per glucose molecule through aerobic respiration, including glycolysis, the Krebs cycle, and oxidative phosphorylation?
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A
2 ATP
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B
4 ATP
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C
Approximately 30-32 ATP
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D
64 ATP
6
Which of the following is the central dogma of molecular biology, describing the flow of genetic information?
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A
DNA → RNA → Protein
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B
Protein → RNA → DNA
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C
RNA → DNA → Protein
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D
DNA → Protein → RNA
7
The process of meiosis is crucial for sexual reproduction. What is a key difference between meiosis I and meiosis II?
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A
Meiosis I separates homologous chromosomes, while meiosis II separates sister chromatids.
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B
Meiosis II involves crossing over, while meiosis I does not.
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C
Meiosis I produces diploid cells, while meiosis II produces haploid cells.
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D
Meiosis II is a single division, while meiosis I involves multiple stages.
8
What is the primary function of the electron transport chain (ETC) in cellular respiration?
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A
To generate acetyl-CoA from pyruvate.
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B
To reduce NAD+ and FAD to NADH and FADH2.
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C
To transfer electrons from NADH and FADH2 to oxygen, releasing energy to pump protons.
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D
To directly synthesize ATP from ADP and inorganic phosphate.
9
The Hardy-Weinberg principle describes a hypothetical population that is not evolving. Which of the following conditions must be met for a population to be in Hardy-Weinberg equilibrium?
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A
Natural selection is acting on the population.
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B
There is gene flow between populations.
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C
Mutation rates are high.
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D
There is no gene flow, no mutation, random mating, no genetic drift, and no natural selection.
10
What is the role of restriction enzymes in molecular biology?
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A
To catalyze the formation of phosphodiester bonds in DNA.
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B
To unwind the DNA double helix during replication.
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C
To cut DNA at specific recognition nucleotide sequences.
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D
To synthesize RNA from a DNA template.
11
Which of the following best describes the fluid mosaic model of the cell membrane?
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A
A rigid, static structure composed primarily of proteins.
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B
A bilayer of phospholipids with embedded proteins that can move laterally.
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C
A single layer of proteins controlling what enters and leaves the cell.
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D
A solid matrix of carbohydrates that provides structural support.
12
The concept of allopatric speciation involves which of the following?
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A
Speciation occurring within the same geographic area.
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B
Reproductive isolation arising due to geographic barriers.
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C
Hybridization between two different species.
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D
Polyploidy leading to instant speciation.
13
What is the primary function of mRNA (messenger RNA)?
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A
To carry amino acids to the ribosome.
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B
To form the structural and catalytic component of ribosomes.
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C
To transfer genetic information from DNA in the nucleus to ribosomes in the cytoplasm.
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D
To regulate gene expression by binding to DNA.
14
Which type of mutation involves a change in a single nucleotide base, which may or may not result in a change in the amino acid sequence?
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A
Frameshift mutation
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B
Chromosomal translocation
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C
Point mutation
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D
Inversion
15
The Calvin cycle, a part of photosynthesis, occurs in which part of the chloroplast?
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A
Thylakoid membranes
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B
Outer membrane
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C
Inner membrane
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D
Stroma
16
What is the term for the evolutionary process where unrelated species independently evolve similar traits or adaptations due to similar environmental pressures?
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A
Divergent evolution
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B
Convergent evolution
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C
Coevolution
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D
Adaptive radiation
17
Which of the following is a key characteristic of prokaryotic cells that distinguishes them from eukaryotic cells?
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A
Presence of a membrane-bound nucleus
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B
Presence of multiple linear chromosomes
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C
Absence of a membrane-bound nucleus and organelles
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D
Presence of a cell wall made of cellulose
18
The process by which a cell engulfs large particles or other cells is called:
-
A
Pinocytosis
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B
Exocytosis
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C
Phagocytosis
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D
Endocytosis
