Eco Factors & Bacteria Quiz
Preview:
Which of the following is a true statement about bacteria?
A. Bacteria exist in only a few environments on earth
B. Bacteria can grow to extremely large sizes
C. Most bacteria are harmful to humans
D. Bacteria can be both harmful and helpful to humans
Layer outside the cell membrane that gives the bacterial cell a solid shape.
A. Cytoplasm
B. Cell wall
C. Plasma membrane
D. Pilli
All bacteria are
A. unicellular
B. multicellular
C. eukaryotic
Why are some bacteria considered extremophiles?
A. They are not affected by environmental conditions
B. They thrive in extreme environmental conditions.
C. They prefer moderate temperatures
D. They are microscopic in size
True or False:
Bacteria is found on our body, especially in our intestines and skin.
A. TRUE
B. FALSE
bacteria has
A. no cell wall and no cell membrane
B. both cell wall and cell membrane
C. cell wall
D. cell membrane
Small organelles that turn genes into proteins
A. Cytoplasm
B. Plasmid
C. Ribosomes
D. Nucleus
Is the bacterial DNA surrounded by a nucleus?
A. No
B. Yes
Which type of bacteria is responsible for causing diseases?
A. Friendly bacteria
B. Neutral bacteria
C. Pathogenic bacteria
D. Harmless bacteria
Small protrusions of cell membrane around the outside of the bacterial cell that allow bacteria to attach to one another, and share DNA.
A. Flagella
B. Cell membrane
C. Pilli
D. Cell wall
Strep throat is caused by
A. bacteria
B. virus
C. protist
D. fungi
What is the job of the cell membrane in bacteria?
A. Decides what enters and exits the cell
B. To make protiens
C. To hold organelles in place
D. To hold water and nutrients
Explain the role of decomposer bacteria in an ecosystem.
A. Decomposer bacteria regulate the climate in the ecosystem.
B. Decomposer bacteria break down dead organisms and organic matter, releasing nutrients back into the ecosystem.
C. Decomposer bacteria are responsible for pollination in the ecosystem.
D. Decomposer bacteria produce energy for other organisms in the ecosystem.
What is the difference between abiotic and biotic factors?
A. Abiotic factors are living, while biotic factors are non-living.
B. Biotic factors are non-living, while abiotic factors are living.
C. Abiotic factors are non-living, while biotic factors are living.
D. Abiotic factors and biotic factors are the same.
What type of cell is bacteria?
A. eukaryotic
B. prokaryotic
C. multicellular