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Biology > Human Nutrition > Flashcards

Human Nutrition Flashcards

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AP® Biology flashcards Biology 101 flashcards
1
Q

What is nutrition ?

A

The way in which organisms obtain and use its food

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2
Q

Autotrophic means

A

An organism makes its own food

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3
Q

Heterotrophic means

A

An organism takes in food from its environment

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4
Q

Herbivores

A

Animals that feed on plants only

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5
Q

Carnivores

A

Feed on other animals

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6
Q

Omnivores

A

Animals that feed on both plants and animals

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7
Q

What are the events in human nutrition

A

Ingestion, digestion , absorption , and egestion

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8
Q

Why is digestion necessary

A

To allow small molecules of food to be absorbed through the walls of intestines

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9
Q

What is digestion ?

A

The breakdown of large food molecules to smaller food molecules

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10
Q

Physical digestion?

A

The breakdown of o food by mechanical means

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11
Q

Four types of teeth are

A

Incisors
Canines
Premolars
Molars

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12
Q

What is the dental formula

A

2(I2/2 C1/1 P2/2 M3/3) TOTALIS 32

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13
Q

What is chemical digestion?

A

The breakdown of food using enzymes

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14
Q

Where is amylase found

A

In saliva produced by salivary glands

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15
Q

pH of the mouth

A

7-8

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16
Q

What is peristalsis?

A

A wave of muscular movement that’s pushes food through the alimentary canal

17
Q

How does physical digestion in the stomach occur?

A

The churning of food

18
Q

What is chyme?

A

A liquid in the stomach

19
Q

What does physical digestion in the stomach do ?

A

Increases surface area to allow enzymes digest the food easier

20
Q

What is pepsinogen?

A

An inactive enzyme formed by glands in the lining of the stomach by HCL

21
Q

WHAT is the pH of the stomach?

A

PH of 2

22
Q

The enzyme pepsin breaks down

A

Protein to peptides

23
Q

How is the stomach prevented from self digestion?

A

Protective mucus

24
Q

What activates pepsin

A

When mix with HCL in stomach

Biology (5 decks)

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