問題一覧
1
Which type of solution would cause a bacterium with a weak or damaged cell wall to burst as water moves into the cell?
A hypotonic solution
2
Which statement regarding the structure or function of ribosomes is correct?
In eukaryotes, the ribosomes found in chloroplasts and mitochondria are 70S ribosomes, which are similar in size to prokaryotic ribosomes.
3
Which of the following statements is INCORRECT regarding prokaryotic cells?
They lack of plasma membrane
4
You are observing a Gram stain of spherical-shaped microorganisms that are linked in a chain and stain purple. How would you describe these bacteria using the correct terminology for the cell shape and arrangement?
gram-positive streptococci
5
Which of the following is NOT found in mitochondria and prokaryotes?
Cell wall
6
Which of the following statements accurately describes specific bacterial cell walls?
In gram-negative bacteria, the thin layer of peptidoglycan is surrounded by an external membrane made of phospholipids, lipopolysaccharides, and proteins.
7
In which eukaryotic organelle are amino acids and fatty acids oxidized?
peroxisome
8
How do spirochetes and spirilla differ?
Spirilla have an external flagella but spirochetes have axial filaments.
9
The difference between simple diffusion and facilitated diffusion is that facilitated diffusion
requires transporter proteins.
10
Endospores are a reproductive structure
False
11
Where are phospholipids most likely found in a eukaryotic cell?
the plasma membrane, around organelles, and surrounding flagella
12
The internal structure of eukaryotic cilia and flagella are the same.
True
13
Many enzymes in both prokaryotic and eukaryotic cells are compartmentalized within organelles.
False
14
Which of the following is found in the cytoplasm of prokaryotic cells but is ABSENT from the cytoplasm of eukaryotic cells
DNA
15
Which of the following is NOT characteristic of the glycocalyx found in bacteria?
creates a slimy, slippery coating that prevents bacteria form attaching to surfaces
16
Small, hydrophobic molecules pass through a cell membrane most easily by diffusion.
True
17
The DNA found in most bacterial cells
is circular in structure
18
Which of the following facts does NOT provide evidence for the endosymbiotic theory?
Prokaryotes contain peptidoglycan in their cell walls.
19
A gram-positive bacteria suddenly acquires resistance to the antibiotic methicillin. This trait most likely occurred due to
Conjugation
20
The number of organelles such as chloroplasts, mitochondria, and rough endoplasmic reticulum is the same in all eukaryotic cells.
False
21
In bacteria, photosynthetic pigments are found in
chromatophores.
22
Which membrane transport mechanism requires ATP?
Active transport
23
Which of the following eukaryotic organelles is correctly matched with its function?
vacuole-storage of materials
24
Which of the following have a cell wall?
fungi
25
Which of the following pairs is mismatched?
centrosome - food storage