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1 | |
The first nutrition researcher to equate the release of heat of oxidation from foods to heat produced by a candle was who? |
|
| | A) | Mendel |
| | B) | Pasteur |
| | C) | Lavoisier |
| | D) | Tyrell |
| | E) | da Vinci |
|
2 | |
There are three sources of water for animal functioning: drinking water, water ingested as a component of foods, and what third source? |
|
| | A) | metabolic |
| | B) | catabolic |
| | C) | nitrogen-free extract |
|
3 | |
A disaccharide, such as lactose, is composed of how many carbon atoms? |
|
| | A) | 2 |
| | B) | 4 |
| | C) | 6 |
| | D) | 12 |
| | E) | 24 |
|
4 | |
Raw cotton is an almost pure compound of what type? |
|
| | A) | protein |
| | B) | cellulose |
| | C) | starch |
| | D) | glycoprotein |
| | E) | dextrin |
|
5 | |
The backbone of a triglyceride is a molecule of what compound? |
|
| | A) | amino acid |
| | B) | fatty acid |
| | C) | glucose |
| | D) | ribonucleic acid |
| | E) | glycerol |
|
6 | |
The sun's activation of 7-dehydrocholesterol in the skin creates what compound? |
|
| | A) | chlorophyll |
| | B) | cholesterol |
| | C) | vitamin D |
| | D) | niacin |
| | E) | prostaglandin |
|
7 | |
There are how many amino acids that are considered to be essential for many mammalian species? |
|
| | A) | none |
| | B) | 6 |
| | C) | 10 |
| | D) | 16 |
| | E) | 20 |
|
8 | |
Why do adult ruminants have no dietary essential amino acids? |
|
| | A) | Microorganisms synthesize the needed amino acids in the rumen. |
| | B) | Ruminants produce enzymes that manufacture all the essential amino acids in their liver. |
| | C) | Ruminants have an extremely low tissue requirement for protein. |
| | D) | Ruminants convert glucose to all known amino acids at high levels of efficiency in almost every tissue. |
|
9 | |
The rumen microbes can effectively convert nonprotein nitrogen to amino acids if a ready source of what other item is available? |
|
| | A) | carbon dioxide gas |
| | B) | carbon monoxide gas |
| | C) | energy |
| | D) | vitamin D |
| | E) | hydrochloric acid |
|
10 | |
Mineral requirements for livestock are generally divided into two groups, microminerals and macrominerals. Which of the following is a micromineral? |
|
| | A) | iron |
| | B) | calcium |
| | C) | phosphorus |
| | D) | magnesium |
| | E) | sodium |
|
11 | |
Which of the following methods gives nutritionists an estimate of fat (lipid) in a feed or food? |
|
| | A) | nitrogen-free extract |
| | B) | crude fiber |
| | C) | ash |
| | D) | neutral detergent |
| | E) | ether extract |
|
12 | |
Crude protein is analyzed by determining which compound in feedstuffs? |
|
| | A) | calcium |
| | B) | phosphorus |
| | C) | nitrogen |
| | D) | nitrogen-free extract |
| | E) | acid detergent insoluble nitrogen |
|
13 | |
Which component of feed is crudely determined by burning (ashing) a feedstuff? |
|
| | A) | mineral |
| | B) | carbohydrate |
| | C) | lignin |
| | D) | cellulose |
| | E) | digestible dry matter |
|
14 | |
The amount of feed energy estimated to be available for maintenance and productive function, such as growth or milk production, is defined by what term? |
|
| | A) | gross energy |
| | B) | metabolizable energy |
| | C) | digestible energy |
| | D) | net energy |
| | E) | heat increment |
|
15 | |
Heat increment may be considered to be a detriment to animals in hot weather but a benefit to animals in cold weather. |
|
| | A) | TRUE |
| | B) | FALSE |
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16 | |
No hormone or hormone-like compounds may be used in the promotion of growth in meat producing animals. |
|
| | A) | TRUE |
| | B) | FALSE |
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17 | |
Carbohydrate and fat in animal tissues can be utilized to provide energy whereas protein cannot. |
|
| | A) | TRUE |
| | B) | FALSE |
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18 | |
The primary difference between starch and fat is that starch is predominantly carbon, hydrogen, and oxygen in composition while fat contains about one-third nitrogen by weight. |
|
| | A) | TRUE |
| | B) | FALSE |
|
19 | |
Essentially, the chemical formula for starch and cellulose is identical, even though only one of them can be digested by mammalian enzymes. |
|
| | A) | TRUE |
| | B) | FALSE |
|
20 | |
The formation of carbohydrate in plants includes the requirement for water molecules and external energy. |
|
| | A) | TRUE |
| | B) | FALSE |
2003 McGraw-Hill Higher Education