Concept explainers
Which of the following is False?
a. Carbohydrates are the major energy storage molecule of plants.
b. Carbohydrates are the major source of rapidly available energy stores in people.
c. Carbohydrates include cellulose.
d. Carbohydrates are hydrophobic and don't retain water in the body.
Introduction:
Carbohydrates come in the simple forms like sugars and in complex forms such as starches and fibers. It can also be defined as neutral compounds of carbon, hydrogen, and oxygen.
Answer to Problem 1MC
Correct answer:
Carbohydrates are hydrophilic and they contain multiple hydroxyl groups which can form hydrogen bonds with water molecules. Therefore, option (d) is correct.
Option (d) is given as “Carbohydrates are hydrophobic and don’t retain water in the body”.
Explanation of Solution
Justify reasons for the correct statement:
All carbohydrates composed of carbon, hydrogen, and oxygen. These molecules come together in different arrangements to form single or double units called as sugars, and longer units called as starches or fibers. Carbohydrates are hydrophilic compounds.
Hence, option (d) is correct.
Justify reasons for the incorrect statements:
Option (a) is given as “carbohydrates are the major energy storage molecule of plants”.
Polysaccharides molecules are the most abundant carbohydrates; they can contain thousands of glucose units. As the above mentioned statement is true, hence, it is a wrong answer.
Option (b) is given as “carbohydrates are the major sources of rapidly available energy stores in people”.
Most of the organism use carbohydrates as energy source. It can be metabolized and provide energy. Monosaccharides like glucose and disaccharides like sucrose and fructose are absorbed from the intestine and are immediately metabolized to produce energy. As the above mentioned statement is true, hence, it is a wrong answer.
Option (c) is given as “carbohydrates include cellulose”.
Cellulose is the polymer of glucose and it is the most abundant polysaccharide on the Earth. It provides mechanical support to the plant structures. As the above mentioned statement is true, hence, it is a wrong answer
Hence, options (a), (b), and (c) are incorrect.
Carbohydrates are hydrophilic in nature and they retain water in the body.
Want to see more full solutions like this?
Chapter 35 Solutions
Biology
- Humans produce the majority of the cholesterol essential for cell membranes for vitamin D and steroid hormone production. What would you anticipate to happen if a person's diet has an abnormally high level of cholesterol? Justify your answer.arrow_forwardWhich of the following statements about the autographs is incorrect?a) They store carbohydrates in the form of starch.b) They constitute the first trophy level in food chains.c) They convert and water into carbohydrates in the absence of sunlight.d) They synthesize carbohydrates from and water in the presence of sunlight &chlorophyll.arrow_forwardWhich of the following statements is False?a. Carbohydrates are the most efficient energy-storagemolecules by weight.b. Intrinsically disordered protein segments have mostlyhydrophilic amino acids.c. Nucleotides may act as energy-carrier molecules.d. Very acidic or salty solutions may denature proteins.arrow_forward
- Which of the following is not a function of fat in food? a. increases appetite b. provides little energy c. provides satiety d. provides a pleasing texturearrow_forwardDuring digestion, fructose is produced by the breakdown of larger molecules. Which type of molecule could be broken down to increase the body’s fructose levels?arrow_forwardWhich of the following statements about nutrients is true? a. All classes of nutrients are essential to human survival. b. Because the body cannot store any micronutrients, they need to be consumed nearly every day. c. Carbohydrates, lipids, and proteins are micronutrients. d. Macronutrients are vitamins and minerals.arrow_forward
- Which of the following is FALSE about carbohydrates? a. They are essential components of the genetic material. b. They serve as supportive structural and protective components in the cell walls of bacteria and plants. c. They can act as ligands and receptors in cellular communication. d. They are generally non-polar and supply the body with fat-soluble vitamins.arrow_forwardWhich of the following types of food would have the lowest concentration of saturated fatty acids? Select one: a. Lard b. Meat c. Blubber d. Leafy plantsarrow_forwardWhich of the following is false about carbohydrates? a. they serve as supportive structure; and protective components in the cell walls of the bacteria and plants b. they are essential components of the genetic material c. they can act as ligands and receptors in cellular communication d. they are generally non-polar and supply the body with fat-soluble vitaminsarrow_forward
- Whenever carbohydrate is available to the body, the human brain depends exclusively on it as an energy source. a. true, b. false A desirable intake of dietary fiber is grams per day. a.10-15,b.15-25, c.20-35,d.35-50 Grains, tubers and legumes are rich sources of: a. starch, b. dietary fiber, c. fat, d. a and b, e. b and c Cellulose, pectin, hemicellulose, and gums are: a. artificial sweeteners, b. sugar alcohols, c. fibers, d. carbohydrates, Food fiber is kcalorie-free. a. true, b. false Grains, legumes, and root vegetables contain predominantly: a. simple sugars , b. starches, c. fibers, d. b and c, e. a, b, and c Which of the following statements about sugar is true? a. it causes obesity, b. it causes heart disease, c. it causes dental caries, d. it causes hyperactive behavior in children A client consumes 2000 kcalories per day and 200 grams of carbohydrate. Would this person meet the current dietary recommendations for…arrow_forwardWhat is the function of brown fat? A. to create body heat via aerobic cellular respiration without making much ATP B. holding in more heat than regular adipose tissue C. absorbing fat digested by the intestines D. releasing oxygen in a reverse process of aerobic cellular respirationarrow_forwardWhich of the following carbohydrates function as a major source of cellular fuel?a. starch in plant cellsb. glycogen in animal cells c. cellulose in lant cellsd. a and ce. a and barrow_forward
- Comprehensive Medical Assisting: Administrative a...NursingISBN:9781305964792Author:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy CorreaPublisher:Cengage Learning