Marathon Runner #2

The tendency of an organism to maintain a balanced state in order to stay healthy.

• Stimuli
• Response
• Tropism
• Homestasis

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NGSS.HS-LS1-3

Maintaining body temperature is an example of a:

• negative feedback loop
• positive feedback loop

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What hormone is produced in the pancreas that lowers blood sugar?

• Insulin

• Glucagon

• Ketones

• Glucose

Which statement is an example of a feedback mechanism in humans?

• An increase in the level of blood sugar results in the pancreas increasing the amount of insulin it secretes.

• Increased exposure to pathogenic bacteria results in an increase in the number of red blood cells produced.

• An increase in exercise results in a decrease in the rate of respiration.

• Increased muscle activity results in a decrease in heart rate.

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NGSS.HS-LS1-3

The diagram represents changes that take place within the human body.

The diagram represents

• cellular differentiation

• dynamic equilibrium

• gene interaction

• biological evolution

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NGSS.HS-LS1-3

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If body temperature is too high, some blood vessels increase in size and sweat glands will excrete sweat, resulting in a lower body temperature. These changes are an example of

• a learned behavior

• feedback mechanisms

• an inherited disorder

• genetic mutations

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NGSS.HS-LS1-3

State the process that organelle X performs.

• photosynthesis
• cellular respiration
• protein synthesis
• information storage

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NGSS.HS-LS1-7

What process is this?

• Photosynthesis

• Cellular Respiration

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NGSS.HS-LS1-5

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NGSS.HS-LS2-5

It may be harmful when people compete to see who can hold their breath the longest underwater. Without oxygen, brain cells

• cannot make enough ATP

• have too few mitochondria

• make too many enzymes

• have too much water

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NGSS.HS-LS1-7

NGSS.HS-LS2-3

A small lizard spends the morning hours lying in the sunlight until its body temperature rises. Later on in the day, the lizard rest in a shady area until its body temperature cools. This type of behavior is important to

• maintain homeostasis

• detect variations

• attract mates

• obtain nutrients

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NGSS.HS-LS1-3