Unit 4: Proteins Flashcards

1
Q

Amino acids are made of many proteins.

A

True

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2
Q

Which of the following is NOT a component of an amino acid molecule?
1) An amino group
2) A sterol group
3) A central carbon
4) An acid group

A

2) A sterol group

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3
Q

What is antibiotic resistance?

A

Pathogenic bacteria develop resistance to antibiotics

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4
Q

Animal agriculture fills some important roles that vegetable crops cannot, such as grazing on steep terrain.

A

True

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5
Q

In a high-protein diet containing lots of red meat and processed red meat, the primary nutritional concern is the high levels of protein.

A

False

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6
Q

When a person doesn’t have enough glucose available, their body might use amino acids to synthesize glucose. This process is called:

A

Gluconeogenesis

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7
Q

In order to use amino acids to make glucose, fat, or ATP, the nitrogen needs to be removed. This is called:

A

Deamination

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8
Q

Which of the following need to be enzymatically digested?
Fructose, Glycerol, Protein, Starch, Lactose, Glucose, Triglycerides, Amino acids, Fibre, Monoglycerides

A

Protein, Starch, Lactose, Triglycerides

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9
Q

Which of the following are absorbed into the small intestine?
Starch, Fibre, Lactose, Triglycerides, Amino acids, Glucose, Fatty acids, Protein, Glycerol

A

Glucose, Fatty acids, Glycerol

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10
Q

Without proteases, people wouldn’t be able to:

A

Enzymatically break down protein in the small intestine

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11
Q

Health Canada recommends that ALL individuals consume the following protein:

A

A varied diet that includes sufficient protein

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12
Q

The one-dimensional polypeptide chain of amino acids, held together by peptide bonds.

A

Primary structure

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13
Q

The polypeptide chain folds into simple coils and sheets, determined by the chemical interactions between amino acids.

A

Secondary structure

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14
Q

The unique three-dimensional shape of a protein, formed as side chains of different amino acids interact.

A

Tertiary structure

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15
Q

In some proteins, multiple folded polypeptides called subunits combine to make one larger functional protein.

A

Quaternary structure

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16
Q

Which of the following conditions might an individual who is experiencing microcytic anemia experiencing:

A

Iron-deficiency

17
Q

What is TRUE about hemoglobin?

A

It is involved in several body functions including oxygen transport, pH buffering, and glucose binding

18
Q

Which of the following conditions is believed to be the LEAST related to an issue with proteins?
1) Huntington’s disease
2) Atherosclerosis
3) Type 1 diabetes
4) Cystic fibrosis

A

4) Atherosclerosis

19
Q

The mean corpuscular volume (MCV) measures:

A

The mean volume of individual red blood cells

20
Q

A person has just been in a motor vehicle crash (MVC) and has lost a lot of blood. Their hemoglobin is 85g/L (which is low for all sexes). Which type of anemia is most likely suspected?

A

Normocytic

21
Q

What are essential amino acids?

A

Amino acids must be obtained through our diet as our bodies cannot produce enough.

22
Q

What are Nonessential amino acids?

A

Amino acids that are not required in our diet because we can make them.

23
Q

How are amino acids used in the body?

A
  • Can be used to generate ATP and for gluconeogenesis.
  • Protein synthesis in cells around the body.
  • Making nonessential amino acids.
  • Rearranged and stored as fat.
  • Rearranged into glucose for fuel for the brain and red blood cells.
24
Q

What are the roles of protein in the body?

A
  • Proteins have many different functions.
  • NOT a source of energy
  • They are used as enzymes, hormones, structure and strength, transport, defence, immunity, fluid and acid-base balance.
25
Q

Complete Proteins

A

Contain all 9 of the essential amino acids (ex. milk, cheese, eggs, fish, meat, soy, quinoa, etc).

26
Q

Incomplete Proteins

A

Do NOT contain all 9 of the essential amino acids (ex. plant based foods).

27
Q

Complementary Proteins

A

Are incomplete protein sources that are combined to have all 9
essential amino acids (ex. rice and beans).

28
Q

Where does mechanical digestion of proteins occur?

A

Mouth: chewing, mixing
Stomach: mixing, churning
Small intestine: peristalsis, segmentation

29
Q

Where does chemical digestion of proteins occur?

A

Stomach: denaturation by HCl, enzymatic digestion.
Small intestine: enzymatic digestion breaks down into amino acids for absorption.