Cell Structure
Which of the following structures is NOT a component prokaryotic cells?
a. Ribosomes
b. Plasma membrane
c. Cell wall
d. Chloroplasts
d. Chloroplasts
What is the primary role of carbohydrates in the plasma membrane?
a. Cell identification
b. Attachment to extracellular matrix
c. Ion transport
d. Modulate membrane fluidity
a. Cell identification
Where does the carbon used in photosynthesis come from?
a. Glucose stored in roots
b. CO2 in the air
c. Carbon compounds in the soil
d. CO in the air
b. CO2 in the air
Which of the following is NOT a characteristic of the Rough Endoplasmic Reticulum?
a. Is composed of membranes
b. Separates ribosomes from cytoplasm
c. Is only present in eukaryotes
d. Is connected to the nuclear envelope
b. Separates ribosomes from cytoplasm
A protein that spans the entire phospholipid bilayer is:
I. Amphipathic
II. Denatured
III. Peripheral
IV. Integral
V. Insoluble in water
a. I and II
b. II and III
c. I and IV
d. IV and V
c. I and IV
Which of the following correctly describes light?
a. Energy is inversely proportional to wavelength
b. Protons absorb the energy in photons during photosynthesis
c. Living things usually use UV light for energy
d. Plants are green because they absorb green light
a. Energy is inversely proportional to wavelength
Compare and contrast prokaryotes and eukaryotes. One reason that eukaryotic cells are typically larger than prokaryotic cells is they
a. do not generally have a cell wall.
b. resulted from endosymbiosis.
c. have internal membranes.
d. have more ribosomes.
c. have internal membranes.
Which of the following are functions of membrane proteins?
I. Catalyze reactions
II. Cell to cell identification
III. Passive transport of some ions
IV. Move substances against concentration gradient
V. Signal transduction
a. I and IV
b. I, II and III
c. I, III, and IV
d. I, II, III, IV, V
d. I, II, III, IV, V
During the Calvin cycle, electrons move
a. from CO2 to a sugar
b. from NADPH to G3P
c. from the stroma to the thylakoid space
d. from ATP to NADPH
b. from NADPH to G3P
Which of the following structures would you expect to find in a cell that lived before endosymbiosis occurred?
I. nucleus
II. DNA
III. nucleolus
IV. vesicles
V. ribosomes
a. III and IV
b. I, III, and V
c. II and V
d. II only
c. II and V
During the learning process, Long Term Potentiation (LTP) should be maximized in order to understand the material in biology. As part of this process, a greater number of ion channels are generated at the synapses where there is a high level of activity. Ion channels are proteins that aid in what type of transport?
a. facilitated diffusion
b. osmosis
c. active transport
d. dynamic equilibrium
a. facilitated diffusion
Identify which of the following statements is TRUE when light strikes a chloroplast inside the leaf of a plant.
a. Green light is absorbed by chlorophyll pigments.
b. The photons in the visible light excite pigments used in the Calvin cycle and produce sugar.
c. Red light is absorbed by the chlorophyll pigment and green light is reflected.
d. The visible light is reflected off of the leaf and the chlorophyll uses photons
c. Red light is absorbed by the chlorophyll pigment and green light is reflected.
1. Borrelia burgdorferi is a prokaryote and Ramazzottius varieornatus is a eukaryote. Which of the following characteristics describe BOTH of these organisms?
I. Plasma membrane consists of a lipid bilayer
II. Possess ribosomes
III. Possess DNA and RNA
IV. Produce protein
a. I and II
b. II and III
c. I, II, and IV
d. I, II, III, and IV
d. I, II, III, and IV
What happens when you place a red blood cell in a fresh water solution, and why?
a. The cell shrinks, since you placed it into a hypotonic solution.
b. The cell shrinks, since it was placed into an hypertonic solution.
c. The cell actively pumps water out of its membrane, since it was placed into a hypotonic solution
d. The cell expands, since it was placed into a hypotonic solution.
d. The cell expands, since it was placed into a hypotonic solution.
Place the following events involving light and electrons in the correct order in which they occur during photosynthesis.
I. e- leaves atom, captured by acceptor
II. e- absorbs E from photon
III. molecule is struck by photon
IV. e- moves to higher E orbital
a. III, IV, II, I
b. II, III, I, IV
c. III, II, IV, I
d. I, III, II, IV
c. III, II, IV, I