4-4 Natural Selection

What is the cause for all variation within a population?

• Natural Selection

• Adaptation

• Mutation

• Environmental Changes

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NGSS.MS-LS3-1

NGSS.MS-LS4-4

An organism's ability to survive and reproduce in its environment refers to its

• Fitness

• Variation

• Selection

• Mutation

Tags

NGSS.MS-LS4-4

Which of the following is true about antibiotic-resistant bacteria?

• Because there are antibiotics in the environment, they become immune

• They learn to fight the antibiotic

• Antibiotic resistance is caused by mutations

• Are those dancing dogs?

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NGSS.MS-LS3-1

NGSS.MS-LS4-4

Which of the following is true about antibiotic-resistant bacteria?

• Bacteria with antibiotic resistance are more likely to survive and reproduce

• Over time, the entire population will become antibiotic resistant

• Bacteria don't mutate as a result of exposure to the antibiotic

• All of these

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NGSS.MS-LS1-5

NGSS.MS-LS3-1

NGSS.MS-LS4-4

Mutations are important because they bring about

• death of the organism in which they develop

• genetic variation needed for a population to evolve

• benefits for the individual, not for the population

Tags

NGSS.MS-LS3-1

NGSS.MS-LS4-4

Below is a graph of an infection with 1,000,000 bacteria. The patient was given multiple doses of an antibiotic to kill the bacteria. Each dose was 99.9% effective and doses were given every 4 hours for 24 hours. Between each dose, the remaining bacteria divided every 20 minutes.

Refer to the graph above. What type of growth does the bacteria display after each antibiotic dose is given?

• exponential growth

• logistical growth

• linear growth

• spiritual growth

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NGSS.MS-LS2-1

RANDO TRIVIA: What letter is the only letter that does not appear in the name of a US state?

• Y

• X

• Z

• Q

Below is a graph of an infection with 1,000,000 bacteria. The patient was given multiple doses of an antibiotic to kill the bacteria. Each dose was 99.9% effective and doses were given every 4 hours for 24 hours. Between each dose, the remaining bacteria divided every 20 minutes.

Refer to the graph above. How many doses of antibiotics were given?

• 2 doses

• 4 doses

• 6 doses

• 8 doses

Tags

NGSS.HS-LS2-4

A population of insects with yellow and green variations lives in the trees in a rainforest. A predator of the insect uses its eyesight to find its food. What do you expect to happen to the green and the yellow variations of the insect over time?

• The number of green insects will increase and the number of yellow insects will decrease.

• The number of yellow insects will increase and the number of green insects will decrease.

• Both variations will remain constant over time.

• Both variations will increase over time.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS4-4

Challenge....

Based on the figure, which bacteria has the least resistance?

• A

• B

• C

• D