Cell Structure and Function
Which organelle absorbs oxygen and releases carbon dioxide and water?
A. Chloroplasts
B. Lysosomes
C. Mitochondria
D. Golgi Apparatus
C. Mitochondria
The plasma membrane is composed of
A. Microtubules and proteins
B. Phospholipids and proteins
C. Microtubules and actin filaments
D. Phospholipids and microtubules
B. Phospholipids and proteins
Which statement most accurately describes the second law of thermodynamics
A. Energy cannot be created or destroyed
B. Energy cannot be created nor destroyed but it can be changed from one form to another
C. One usable form of energy can be completely converted into another usable form
D. Energy cannot be changed from one form to another without a loss of usable energy
D. Energy cannot be changed from one form to another without a loss of usable energy
Image 3
Label as much of the Electron Transport Chain as you can. 100 points per correct label!!!
A. Hydrogen ion H+
B. High energy electron
C. Proton pump/ protein
D. NADH (dropping off e-)
E. FADH2 (dropping off e-)
F. O2 (picking up low energy e-)
G. ATP Synthase Complex
H. Intermembrane Space
J. Matrix
K. ATP Channel Protein (move ATP out)
What is the substance that initially traps solar energy in photosynthesis
A. RuBP
B. Pyruvate
C. Chlorophyll
D. Glucose
C. Chlorophyll
In the interior of the rough endoplasmic reticulum...
A. Lipids are synthesized
B. Proteins are processed and modified
C. Genetic material is stored
D. Cellular respiration occurs
B. Proteins are processed and modified
When a substance moves from an area of low concentration to an area of high concentration while using energy, the process is termed
A. Diffusion
B. Osmosis
C. Facilitated diffusion
D. Active transport
D. Active transport
During an enzymatic reaction, what happens to the enzyme
A. It becomes the product
B. It becomes the substrate
C. It is used up
D. The enzyme and the substrate form a temporary complex
D. The enzyme and the substrate form a temporary complex
The largest number of ATP molecules is produced in which phase of cellular respiration
A. Preparatory reaction
B. Glycolysis
C. Citric acid cycle
D. Electron transport chain
D. Electron transport chain
At the cellular level, photosynthesis occurs within
A. The cristae of the mitochondria
B. All plant cell organelles
C. Both chloroplasts and mitochondria
D. The chloroplast
D. The chloroplast
Image 1. WORTH DOUBLE POINTS
What parts of the mitochondria are labled A + B?
A: Cristae
B: Matrix
If 0.9% NaCl were isotonic to a cell, then
A. 1.0% would be hypertonic
B. 1.0% would be hypotonic
C. 0.1% would be hypertonic
D. 0.9% would also be hypotonic
A. 1.0% would be hypertonic
How does the first law of thermodynamics relate to food chains/webs
A. The plants convert light energy from the sun to chemical energy
B. The plants create chemical energy
C. The plants lose some light energy to heat when using light to make new chemical bonds
D. The animals' mechanical energy is ultimately converted to heat
A. The plants convert light energy from the sun to chemical energy
What are the INPUT requirements of glycolysis
A. ATP, NAD+, glucose, and ADP
B. NAD+, FAD, acetylCoA, and ADP
C. Pyruvates, NADH, and ADP
D. Glucose and oxygen
A. ATP, NAD+, glucose, and ADP
What are the products of photosynthesis
A. Glucose and oxygen
B. Carbon dioxide and glucose
C. Carbon dioxide and water
D. Glucose and water
A. Glucose and oxygen
Which of the following is NOT evidence supporting the endosymbiotic theory?
A. Mitochondria and chloroplasts have their own DNA
B. Mitochondria and chloroplasts divide by splitting
C. The vacoules can "come and go" across the plasma membrane
D. Mitochondria and chloroplasts are nearly identical to some free-living prokaryotes
C. The vacoules can "come and go" across the plasma membrane
Permeability refers to
A. the movement of molecules from an area of greater concentration to an area of lesser concentration.
B. The extent to which a membrane allows a substance to pass through.
C. The amount of solute in a solution.
D. The ability to establish a permanent solute level in a solution.
B. the extent to which a membrane allows a substance to pass through.
The image on the left
A. Is more organized, contains more potential energy, and is less stable
B. Is less organized, contains less potential energy, and is more stable
A. Is more organized, contains more potential energy, and is less stable
What is the correct order of cellular respiration reactions?
A. Glycolysis, preparatory reaction, fermentation, electron transport chain
B. Electron transport chain, glycolysis, preparatory reaction, citric acid cycle
C. Glycolysis, preparatory reaction, citric acid cycle, electron transport chain
D. Fermentation, glycolysis, preparatory reaction, citric acid cycle
C. Glycolysis, preparatory reaction, citric acid cycle, electron transport chain
Image 4
In the image above photosystem 2 is represented by the letter...
A. E
B. D
C. H
D. G
D. G
The innermost membrane of a chloroplast is known as the
A. Thylakoid membrane
B. Cristae
C. Stroma
D. Inner membrane
A. Thylakoid membrane
A. Moves glucose across a membrane by simple diffusion.
B. Moves glucose across a membrane by facilitated diffusion.
C. Moves glucose across a membrane by active transport.
D. Moves glucose across a membrane by receptor mediated endycytosis
B. Moves glucose across a membrane by facilitated diffusion.
Which of the following statements is true about enzymes?
A. Their 3D shape can vary and still be active
B. Boiling temperatures do not affect their activity.
C. They catalyze only one specific type of reaction.
D. They can associate with a wide variety of substrates.
E. They are unaffected by changes in pH.
C. They catalyze only one specific type of reaction.
Why does chemiosmosis require a membrane?
A. To anchor proteins within the mitochondria
B. Because the phospholipids are involved in the electron transport chain
C. To separate wo compartments of the cell to allow for gradient formation
D. To generate H+ from water
C. to separate wo compartments of the cell to allow for gradient formation
Imagine starting in the innermost space of the chloroplast and moving outward until leaving the chloroplast and entering the cytoplasm. What is the starting points an proper order of things you would move through?
A. thylakoid space - thylakoid membrane - stroma - inner membrane - outer membrane
B. stroma - inner membrane - thylakoid space - thylakoid membrane - outer membrane
C. stroma - inner membrane - thylakoid membrane - thylakoid space - outer membrane
D. matrix - inner membrane - intermemebrane space - outer membrane
A. thylakoid space - thylakoid membrane - stroma - inner membrane - outer