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WorksheetsChapter 3 quiz: The cellular level of organization
Total questions: 24
Worksheet time: 20mins
Which of the following is NOT part of the cell theory?
Cells are the smallest units of life
All living things are composed of cells
Cells can spontaneously generate under certain conditions
Cells come only from pre-existing cells
Which organelle is responsible for ATP production through aerobic respiration?
Nucleus
Mitochondria
Ribosome
Golgi apparatus
Which of the following is NOT a function of the plasma membrane?
Selective permeability
Energy production
Cell signaling
Protection
What would happen to a cell placed in a hypertonic solution?
It would swell
It would shrink
It would remain the same size
It would burst
Which organelle is known as the "digestive system" of the cell, responsible for breaking down materials?
Mitochondria
Lysosome
Peroxisome
Golgi apparatus
Which structure controls what enters and exits the nucleus?
Nuclear envelope
Nuclear pores
Nucleolus
Chromatin
What is the main function of the cytoskeleton?
Provides structural support and movement within the cell
Synthesizes lipids and stores calcium
Processes, packages, and ships proteins
Produces ribosomal subunits
Which of the following is NOT a function of the Golgi apparatus?
Processes proteins
Packages proteins
Ships proteins
Produces ribosomal subunits
Which phase of the cell cycle comes immediately before DNA replication?
G1 phase
S phase
G2 phase
M phase
Which structure is directly involved in the movement of the cell?
Cytoskeleton
Golgi apparatus
Nucleolus
Smooth ER
The plasma membrane is composed of a bilayer of phospholipids with embedded proteins.
True
False
Mitosis results in two genetically identical daughter cells.
True
False
Facilitated diffusion requires which of the following?
Energy from ATP
Protein carriers
Ribosomes
Lysosomes
Which of the following is NOT a function of the plasma membrane?
Regulating entry and exit of substances
Providing structural support
Synthesizing proteins
Cell signaling
Which of the following is true about transcription and translation in eukaryotic cells?
Both occur in the cytoplasm
Transcription occurs in the nucleus, translation in the cytoplasm
Both occur in the nucleus
Transcription occurs in mitochondria, translation in the nucleus
Why is the plasma membrane described as a "bilayer"?
It has two layers of proteins
It has two layers of phospholipids
It has two layers of carbohydrates
It has two layers of DNA
Which of the following statements about facilitated diffusion is correct?
It requires energy from ATP
It moves substances against their concentration gradient
It uses protein carriers to move substances down their concentration gradient
It only occurs in plant cells
During which phase of the cell cycle does mitosis occur?
G1 phase
S phase
M phase
G2 phase
From first to last, order the steps of glycolysis
Glucose Activation – Glucose is phosphorylated using ATP to make it more reactive.
Splitting – The 6-carbon sugar is split into two 3-carbon molecules (glyceraldehyde-3-phosphate).
Energy Harvest Prep – Each 3-carbon molecule is oxidized, generating NADH.
ATP Generation – High-energy intermediates transfer phosphate groups to ADP, forming ATP.
Pyruvate Formation – 2 pyruvate molecules, 2 net ATP, and 2 NADH
Order the steps in the Krebs cycle from first to last
Citrate Formation – Acetyl-CoA (2 carbons) combines with oxaloacetate (4 carbons) to form citrate (6 carbons).
Citrate Rearrangement – Citrate is rearranged into isocitrate to prepare for oxidation.
First Oxidations & CO₂ Release – Isocitrate and then α-ketoglutarate are oxidized, releasing CO₂ and generating NADH.
More Oxidations & ATP Formation – Succinyl-CoA is converted to succinate, releasing energy to form ATP (or GTP).
Regeneration of Oxaloacetate – Succinate is oxidized stepwise back to oxaloacetate, producing more NADH and FADH₂, ready to start the cycle again.
Order the steps of the ETC from first to last
Electron Delivery
NADH and FADH₂ drop off high-energy electrons to the ETC (complexes I–IV) embedded in the inner mitochondrial membrane.
Electron Hand-Offs
Electrons flow “downhill” through the complexes via carriers (including coenzyme Q and cytochrome c), losing energy in controlled steps.
Proton Pumping
The released energy powers proton pumps (I, III, IV) to move H⁺ from the matrix to the intermembrane space, building an electrochemical gradient (proton-motive force).
Oxygen as Final Acceptor
At complex IV, electrons combine with O₂ and H⁺ to form water. (No O₂ = backup = no gradient = ATP production stalls.)
ATP Synthesis
Protons flow back into the matrix through ATP synthase, which uses that gradient energy to phosphorylate ADP → ATP (oxidative phosphorylation).
Order the steps of mitosis, first to last
Prophase – Chromosomes condense, spindle fibers form, and the nuclear envelope breaks down.
Metaphase – Chromosomes line up along the middle (metaphase plate).
Anaphase – Sister chromatids are pulled apart to opposite poles.
Telophase – Nuclear envelopes reform around each set of chromosomes, which begin to uncoil.
Cytokinesis – The cytoplasm divides, forming two genetically identical daughter cells.
Order the flow of cellular differentiation from least differentiated to most differentiated stem cells
Totipotent
Pluripotent
multipotent
Trace the general path of ATP production from a single glucose molecule from the beginning of glycolysis to the end of the electron transport chain.
