A
Which of the following clues would tell you if a cell is prokaryotic or eukaryotic?
A. whether or not the cell is partitioned by internal membranes
B. whether or not the cell carries out cellular metabolism
C. whether or not the cell contains DNA
D. the presence or absence of ribosomes
E. the presence or absence of a rigid cell wall
A
Which of the following are common traits of chloroplasts and mitochondria?
A. Both have their own DNA.
B. Both are surrounded by a single membrane.
C. Both are found in plant and animal cells.
D. Both reproduce by meiosis.
E. Proteins for both are synthesized on ribosomes in the rough ER.
A, B, E
Which statements are true for chloroplasts? Select the three that apply.
A. They contain the green pigment chlorophyll.
B. They are the sites of reactions that convert solar energy into chemical energy.
C. They are the sites of reactions that convert chemical energy from food molecules to ATP.
D. Their inner membrane has infoldings called cristae.
E. They have membranous sacs called thylakoids that are surrounded by a fluid called stroma.
F. Their matrix contains enzymes that function in cellular respiration.
A
The smallest cell structure that would most likely be visible with a standard (not super-resolution) research-grade light microscope is a _____.
A. mitochondrion
B. microfilament
C. ribosome
D. microtubule
E
Beginning within the nucleus, the first step leading to the synthesis of a polypeptide is _____.
A. linking of nucleotides to form a polypeptide
B. translation of a DNA nucleotide sequence into a sequence of amino acids
C. removal of introns from RNA and the stitching together of exons
D. translation of an RNA nucleotide sequence into a sequence of amino acids
E. transferring of information from DNA to messenger RNA
D
Which statement correctly describes the nuclear envelope of a eukaryotic cell?
A. The nuclear envelope is a single membrane, consisting of a phospholipid bilayer.
B. Plasmadesmosomes in the nuclear envelope permit the exchange of macromolecules between the nucleus and the cytoplasm.
C. All of the proteins of the cell are synthesized on ribosomes bound on the nuclear envelope.
D. The nuclear envelope is continuous with the endoplasmic reticulum.
E. The outer layer of the nuclear envelope is coated with laminin.
D
Which organelle plays a role in intracellular digestion?
A. Golgi apparatus
B. plasmodesma
C. chloroplast
D. lysosome
E. ribosome
B
Mitochondria are found in _____.
A. animal cells only
B. plant and animal cells
C. all cells
D. plant cells only
E. animal cells and prokaryotic cells, but not plant cells
C
Identify the correct statement about differences between rough and smooth endoplasmic reticulum (ER).
A. Rough ER consists of a network of membranous tubules and sacs called cisternae, whereas smooth ER is less complex.
B. Smooth ER is part of the endomembrane system of the eukaryotic cell, and rough ER is not.
C. The outer surface of smooth ER lacks ribosomes, whereas the outer surface of rough ER has ribosomes.
A
Which statement correctly describes an endomembrane function?
A. Products of the ER are usually modified during their transit from the cis to the trans region of the Golgi apparatus.
B. The lumen of the endoplasmic reticulum (ER) is continuous with the cell nucleus.
C. Secretory proteins in transit from one part of the cell to another are carried in lysosomes.
A
Your uncle has a stem cell treatment in which he has skin cells injected into his lungs. A benign tumor of skin cells resulted. What is this called?
A. a teratoma
B. a melanoma
C. a sarcoma
D. a hematoma
B
Which structure is not part of the endomembrane system?
A. Golgi apparatus
B. chloroplast
C. ER
D. plasma membrane
E. nuclear envelope
A
Which structure is common to plant and animal cells?
A. mitochondrion
B. chloroplast
C. wall made of cellulose
D. central vacuole
E. centriole
C
Which of the following is present in a prokaryotic cell?
A. chloroplast
B. mitochondrion
C. ribosome
D. nuclear envelope
E. ER
C
What is the most likely pathway taken by a newly synthesized protein that will be secreted by a cell?
A. ER > lysosomes > vesicles that fuse with plasma membrane
B. ER > Golgi > nucleus
C. ER > Golgi > vesicles that fuse with plasma membrane
D. nucleus > ER > Golgi
E. Golgi > ER > lysosome
x

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