BSC 103 EXAM QUESTIONS CORRECTLY ANSWERED.
Bacteria have _______ cells, defined by the _______. - CORRECT ANSWER prokaryotic; absence of organelles
Which of the following accurately compares prokaryotic and eukaryotic cells? - CORRECT ANSWER b and c
Although both humans and bacteria have...
Bacteria have _______ cells, defined by the _______. - CORRECT ANSWER prokaryotic; absence of
organelles
Which of the following accurately compares prokaryotic and eukaryotic cells? - CORRECT ANSWER b and
c
Although both humans and bacteria have ribosomes, streptomycin—which blocks ribosome function—
does not harm a human who ingests it. Why? - CORRECT ANSWER Human cells have ribosomes that do
not bind streptomycin; only prokaryotic ribosomes are affected by this drug
Gram-positive and Gram-negative bacteria are most commonly differentiated in the laboratory by
__________. - CORRECT ANSWER whether or not a dye is trapped within the cells during the Gram
staining procedure
Which of the following is associated with all cells? - CORRECT ANSWER a, b, and c
Fungi are eukaryotic organisms. Scientists have found it more challenging to develop treatments for
fungal infections (e.g., yeast infections, athlete's foot, and certain nail infections) than for bacterial
infections. Why is this so? - CORRECT ANSWER The potential targets found in these cells closely
resemble our own eukaryotic cells.
Which of the following types of transport are most closely related in terms of the energy requirements
for moving material across a membrane? - CORRECT ANSWER simple diffusion and facilitated diffusion
Which of the following statements is TRUE about prokaryotes and eukaryotes? - CORRECT ANSWER
Prokaryotes are smaller and lack the internal compartments that eukaryotes have.
, Which of the following accurately describes why specific material uses a protein to cross the
membrane? - CORRECT ANSWER The hydrophobic core of a membrane will only allow hydrophobic
substances to cross without a membrane protein.
Which of the following statements best explains why bacteria are considered living organisms? -
CORRECT ANSWER They are made of cells
Penicillin interferes with __________________, causing bacteria to die from ______________. -
CORRECT ANSWER cell wall synthesis; swelling and rupturing of the cell
Some inherited syndromes, for example MERRF (myoclonic epilepsy with ragged red fibers), interfere
with the function of mitochondria. From what you know about mitochondria, why do you think the
muscles and the nervous system are the predominant tissues affected in MERRF? - CORRECT ANSWER
Mitochondria are the most metabolically active and require the most energy.
You find a single-cell organism with a cell wall in the soil of a forest—can this organism be an animal?
Which of the following facts would convince you that the organism is a bacterium and not a plant? -
CORRECT ANSWER The cell wall is made of peptidoglycan
The two major components of cell membranes are _______ and _______. - CORRECT ANSWER
phospholipids; proteins
Which of the following cellular components would not be a good target for an antibiotic? - CORRECT
ANSWER phospholipids
Insulin is a protein hormone secreted by certain pancreatic cells into the bloodstream. Which of the
following organelles are involved in the synthesis and secretion of insulin? - CORRECT ANSWER all of the
above
Which organelle would cause the most damage to cytoskeletal fibers in the cytoplasm if its contents
were to leak into the cytoplasm? - CORRECT ANSWER lysosome
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