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MCB 2610 Exam 1 Questions with 100% Correct Answers | Latest Update | Verified
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Scientist __________ sealed his container of broth prior to boiling it to disprove the theory of spontaneous generation a. John Needham b. Lazzaro Spallanzani - Lazzaro Spallanzani Antony van Leeuwenhoek was inspired by _________________'s microscope work and refined it even more. a. Edward J...

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  • August 23, 2024
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  • 2024/2025
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MCB 2610 Exam 1 Questions

Scientist __________ sealed his container of broth prior to boiling it to disprove the theory of
spontaneous generation

a. John Needham

b. Lazzaro Spallanzani - Lazzaro Spallanzani



Antony van Leeuwenhoek was inspired by _________________'s microscope work and refined it even
more.

a. Edward Jenner

b. Louis Pasteur

c. Robert Hooke

d. Francesco Redi - Robert Hooke



Bacteria are able to occupy more habitats than eukaryal cells because they

a. Have greater metabolic diversity.

b. Are smaller than eukaryal cells.

c. Mutate more rapidly.

d. Reproduce more quickly. - have greater metabolic diversity



Bright-Field microscopes produce a light/dark image against a light/dark background - dark, light



Due to its versatility, many scientists have hypothesized this molecule may have formed the basis for
early life on earth.

a. RNA

b. Amino acids

c. Lipids

d. DNA - RNA

, Francesco Redi worked to disprove what theory with his meat/fly jar experiments? - the theory of
spontaneous generation



How did Lister help decrease the number of hospital-acquired infections?

a. By developing penicillin to treat infections

b. By developing an antimicrobial agent to use in hospitals

c. By showing that cleanliness had no effect on disease incidence

d. By quarantining sick individuals - by developing an antimicrobial agent to use in hospitals



How did Pasteur disprove spontaneous generation?

a. By showing that bacteria would only grow when in direct contact with bacteria in the outside air

b. By showing that bacteria would only grow when he added them directly to a flask

c. By showing that diseases were caused by bacteria

d. By isolating the infectious agent that caused disease - by showing that bacteria would only
grow when in direct contact with bacteria in the outside air



How did the atmospheric O2 concentration rise?

a. Via plants

b. Via cyanobacteria

c. Via influx of O2 from respiration

d. By using the energy of the sun - via cyanobacteria



How do vaccines work?

a. By exposing an individual to a weakened version of a microbe to cause a person to have immunity.

b. By exposing an individual to a small piece of a microbe to cause a person to have immunity.

c. Exposing an individual to an inactivated version of a microbe to cause a person to have immunity.

d. All of the above - all of the above

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