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(7th) Chapter 7 Flashcards | StudBud
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(7th) Chapter 7
(7th) Chapter 7
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This Quiz! covers material from Life Science Chapter 7 - Lessons 1, 2, and 3. 'Bacteria and Viruses'
Flashcards
50 cards
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Practice quiz
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Host live
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Questions
50
Answers
1
A process of the food industry that is used to kill harmful bacteria is _________.
Pasteurization
vaccination
botulism
nitrogen-fixation
2
What can occur in a virus that might cause it to be resistant to antibiotics?
degradation
replication
mutation
pasturization
3
Your test is tomorrow!
Yes
Yes
Yes
Yes
4
Viral diseases are difficult to treat for which reason?
Viruses are constantly changing.
They are so rare
We do not have anything that will work against them.
We cannot see them.
5
What is the largest country on Earth?
The United States
Canada
Russia
China
6
What is the structure labeled with the letter E
Pili
Cell Wall
Flagella
Ribosome
7
What happens when a virus enters a host cell?
It is latent and dormant for equal amounts of time.
It stays dormant in the cell for months.
It is sometimes active and sometimes latent.
It is always active.
8
What is the length around a circle called?
Diameter
Area
Radius
Circumference
9
What is the function of the pili?
reproduction
defense against antibodies
moving with the bloodstream
sticking to surfaces
10
Harmful bacteria in food can be killed by ____.
Cold
Sunlight
Heat
All of the above
11
How do bacteria reproduce?
asexually, in a process called fusion
asexually, in a process called conjugation
asexually, in a process called fission
sexually, in a process called fission
12
•Bacteria often forms clusters. Which shape of bacteria do you think would likely form a cluster?
Bacteriophage
Rod
Spiral
Sphere
13
The arrow points to an antibiotic
False
True
14
Bacteria can be all of the following shapes EXCEPT
Rod
Sprial
Crystaline
Sphere
15
Use of bacteria to clean up an oil spill is an example of what process?
pasteurization
nitrogen fixation
symbiosis
bioremediation
16
__________ uses bacteria to break down pollutants into simpler, harmless compounds.
Mitosis
Regeneration
Chemosynthesis
Bioremediation
17
To what classification of organism do bacteria belong to?
semi-karyotes
archea
prokaryotes
eu-carrotyotes
18
What ability do endospores give to bacteria?
exchange genetic information with other bacteria
change ribosome properties
survive harsh environmental conditions
absorb other cells
19
Bacteria are unlike plant and animal cells because they ____.
have many organelles
have ribosomes
are smaller
make their own food
20
How do antibodies work?
They target and destroy the RNA of any known virus.
They target and destroy the DNA of any known virus.
Antibodies identify and attach to any potential host cells.
They attach to the virus and signal the body to destroy the virus
21
Which stage of viral infection is modeled in this figure?
dormant conditions within the cell
infection of the cell
reproduction of the virus
cellular destruction and spreading of the virus
22
In which human organ can large numbers of bacteria be found?
the large intestine
the heart
the thyroid
the brain
23
Bacteria can be found _______________.
all of the above
in food
in the air
on your skin
24
Two foods that are made using helpful bacteria are
milk and meat
carrots and twinkies
meat and cheese
soy sauce and cheese
25
How does a virus differ from a common cell?
It has two nuclei and no cell wall or organelles.
It has no nucleus, cell wall, or organelles.
A virus differs from a cell only in shape.
A virus has no cell well, no nucleus, and only organelles for movement.
26
What is one of the main functions of bacteria in the environment?
decomposition of dead matter
oxygen fixation
antibiotic production
oxygen production
27
Antiviral medicines, like vaccines, work using which method?
destroying the virus
curing symptoms
preventing the virusfrom entering a cell
killing the host
28
The Atlantic Ocean is the largest ocean on the planet.
False
True
29
Thick walls produced by some bacterial pathogens are called ____.
saprophytes
nitrogen-fixing
antibiotics
endospores
30
Bacteria normally have _______ basic shape(s)
Four
One
Three
Two
31
Bacteria reproduce by
folding
fracturing
fission
fusion
32
Which statement best describes the structure of this virus?
The genetic material of the virus is letter A.
Letter B can be composed of either DNA or RNA.
All viruses have the same shape and size.
Both A and B are composed of genetic material.
33
What is the purpose of the capsule (cell wall) on bacteria?
allow the bacteria tomove
help bacteria stickto surfaces
contains DNA
protects bacteriumfrom drying out
34
What land animal can open its mouth the widest?
Hippo
Alligator
Crocodile
Baboon
35
Which of the following is not caused by a virus?
chicken pox
common cold
Tuberculosis
Covid-19
36
This is a nodule of a bean plant. What type of bacteria is found in this structure?
HIV bacteria
nitrogen-fixing bacteria
influenza bacteria
plasmids
37
An antibiotic is a drug used to kill ____.
Both Viruses and Bacteria
Bacteria
None of the above
Virus
38
What is being pointed to by the arrow in the figure?
A virus
A Corn on the Cob
An antibody
A host cell
39
Which organisms are usually grouped according to the extreme environment in which they live?
protists
archaea
viruses
bacteria
40
Which of the following is NOT a method used by bacteria to obtain food?
feed on deadorganisms
use energy fromchemical reactions to make food
use light energy and makefood
grow and harvest food
41
What does a body use to fight off viral infection?
antivirus software
cell mutation
antibodies
bacterial immunity
42
What type of virus is represented in this model?
crystals
antibiotic
bacteriophage
specialized
43
How does a vaccine work?
A vaccine targets and destroys infected cells in a body.
A vaccine uses specialized cells to fight off the infection.
A vaccine uses deactivated pathogens to create new cells in the body.
Deactivated pathogens stimulate the production of antibodies to fight virus
44
Quick! Press yes
Yees
Yess
No
Yes
45
Some animals can get a sunburn.
False
True
46
Which of the following is a means for bacteria to enter your body?
through the food you eat
in the air you breathe
all of the above
through a cut
47
What is today's national day?
National Basketball Day
National Crepes Day
National Puppy Day
National Chocolate Covered Raisin Day
48
Which statement best describes the figure?
Bacterial growth is slowed by antibiotics.
Virus growth patterns change in the presence of antibiotics.
Bacteria cannot grow without antibiotics.
Antibiotics are not strong enough to kill all viruses
49
Many bacteria have whiplike tails called __________ that help them move
slimes
bacillus
flagella
ribosomes
50
Why is there debate over whether or not viruses are living?
Viruses are too complex to be living organisms.
Visuses can reproduce after being latent for years.
Viruses cannot be killed.
Viruses cannot carry on life functions outside a living cell.
