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Micro Exam 1 (part 2) Flashcards | StudBud
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Micro Exam 1 (part 2)
Micro Exam 1 (part 2)
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god please help us (part 2)
Flashcards
38 cards
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Practice quiz
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Questions
38
Answers
1
Which of the following is NOT a characteristic of all living things?
movement
responsiveness
reproduction
growth
2
Archaea is NOT a prokaryote
False
True
3
Which of the following is NOT a part of bacterial flagella?
fimbriae
basal body
filament
hook
4
Sometimes prokaryotic cells are surrounded by a gelatinous sticky substance. What is this structure called?
glycocalyx
filament
cementum
flagellin
5
Fill in number 14
glucose, fructose, urea, some vitamins
glucose, mannose, fructose
water
oxygen
6
Which of the following is TRUE of the selectively permeable membrane?
only large molecules can pass through
it can maintain a concentration gradient
movement across the membrane occurs only through passive processes
movement across the membrane occurs only through active processes
7
Which of these is NOT a function of the cytoskeleton in eukaryotic cells?
moving organelles within the cell
helping the cell sense nutrients in its environment
giving the cell its basic shape
anchoring organelles
8
Which of the following BEST describes the major function of the bacterial cell wall?
protection from osmotic forces
protection from drying out
protection from antibiotics
protection from temperature extremes
9
Proteinaceous filaments, shaped like grappling hook may radiate from archaea to help secure them to surfaces
hami
cilia
fimbriae
peptidoglycan
10
Mycolic acid contributes to the unique characteristic of acid-fast bacteria
True
False
11
An important cause of disease in animals and is not affected by antibiotic treatments that target cell wall synthesis
Meilin Huang
Myelin
Miospore
Mycoplasma
12
Theory that claims eukaryotic cells formed when a large anaerobic prokaryote engulfed a smaller aerobic prokaryotic cell
theory of relativity
life theory
theory of mitochondria
endosymbiotic theory
13
What are the two types of prokaryotic organisms?
bacteria and viruses
bacteria and fungi
bacteria and algae
bacteria and archaea
14
Mycroplasma lack cell walls entirely. What characteristic would you expect for these bacteria?
sensitivity to osmotic lysis
slow growth
rod shape
large cell size
15
Which of these is found ONLY in eukaryotes?
ribosomes
endocytosis
cell walls
chromosomes
16
The organelle responsible for receiving, processing, and packaging large molecules that will be secreted from the cell
lysosome
smooth ER
rough ER
golgi body
17
Which of the following statements BEST describes the ribosomes of eukaryotic cells?
80S
70S
do not have ribosomes
contain the DNA of the cell
18
What is the typical size range for eukaryotic cells?
1-10 mm
10-100 μm
10-100 mm
1-10 μm
19
The peptidoglycan layer of gram-positive organism is thicker than gram negative
True
False
20
The 2001 bioterrorist anthrax attacks in the US involved Bacillus anthracis. Why does B. anthracis survive in mail?
it is capable of forming endospores which are not metabolically active
the exospores prevent B. anthracis from seeping through the paper
it is metabolically active and can stay contained
B. anthracis is solid at high elevations
21
Cells use _____ to transfer DNA from one cell to another via conjugation.
pili
hami
glycopeptides
fimbriae
22
Which of the following have the thickest peptidoglycan layer in the cell wall?
gram negative bacteria
gram positive bacteria
archaea
all have the same amount
23
The ____ plays a role in lipid synthesis and transport.
mitochondrion
smooth endoplasmic reticulum
rough endoplasmic reticulum
golgi body
24
Which of the following is a function of the cytoplasmic membrane?
protein synthesis
controlling the passage of substances into and out of the cell
producing a capsule for the cell
containing the DNA of the cell
25
What structures must eukaryotic cells have in order to harvest light energy during photosynthesis?
mitochondria
chloroplasts
ribosomes
centrioles
26
Reproduction is defined as an increase in size of an organism
False
True
27
Which is NOT a characteristic of an endospore?
offensive strategy against unfavorable conditions
vegetative cells turn into endospores when multiple nutrients are limited
unique structures produced by some bacteria
resistant to extreme conditions such as heat, radiation, and chemicals
28
Lysozyme is an antibacterial enzyme in human tears that degrades peptidoglycan. Which is MOST sensitive to lysozyme?
archaea
gram positive bacteria
algae
gram negative bacteria
29
Fill in number 13
glucose, mannose, fructose
oxygen
Na+, K+, Ca2+, H+, Cl-
glucose, fructose, urea, some vitamins
30
Fimbriae is a bacterial cell structure that plays an important role in the creation of biofilms
False
True
31
Which of the following is TRUE concerning LPS?
it is found only in Gram Positive cells
it is composed of sugar and protein
it is also called endotoxin
it is produced inside the bacteria cell
32
Are you ready for the exam?
NO
MAYBE
YES
NO (but in blue)
33
Which bacteria does NOT have a cell wall?
All bacteria has a cell wall
Mycoplasma and T-form bacteria
Mycoplasma and L-form bacteria
Mylocreatin and S-form bacteria
34
Endospores form in response to harsh environmental conditions, such as limited nutrients.
True
False
35
Which of these is found in BOTH Gram Negative and Gram Positive cell walls?
peptidoglycan
teichoic acid
outer membrane
lipopolysaccharide
36
Inclusions in prokaryotic cells may be deposits of ________.
all of the above
starch
nitrogen compounds
lipids
37
Mycoplasma acquires cholesterol from the environment and form sterols to build their cytoplasmic membrane
True
False
38
Fill in number 11
oxygen
water
glucose, fructose, urea, some vitamins
glucose, mannose, fructose