Question

1. Most carbohydrates contain carbon, hydrogen and oxygen in the ratio of ____________.
2. Starch and glycogen are composed of subunits of _____________________
3. Proteins are composed of ________ common amino acids linked together by _____________ bonds.
4. ________________ are the building blocks of nucleic acids.
5. The types of nucleic acids important in the storage of hereditary information are ____________ and _____________.
6. The monosaccharide common to sucrose, starch, glycogen and cellulose is:
7. Glucose and galactose are
8. Carbohydrates and fats are used by living organisms mainly as
9. A fat molecule is formed by the reaction of three fatty acid molecules with one molecule of
10. Fats contain about ____ energy as carbohydrates
11. The two chains of DNA are held together by _____ bonds.
12. Cows can digest cellulose in grasses, but people cannot. A cow’s four-chambered stomach holds populations of microbes that are not normal residents of the human stomach. What kind of metabolic reactions do you think the microbes carry out in the stomach of the cows? What do you think might happen to a cow being treated with an antibiotic that kills the microbes?

Answer 1

Ans 1) Most carbohydrates contain carbon, hydrogen and oxygen in the ratio of 1:2:1

Ans 2) Starch and glycogen are composed of subunits of Glucose

Ans 3) Proteins are composed of _20__ common amino acids linked together by ___peptide__ bonds.

Ans 4) Nucleotide are the building blocks of nucleic acids.

Ans 5) The types of nucleic acids important in the storage of hereditary information are DNA and RNA

Ans 6) The monosaccharide common to sucrose, starch, glycogen and cellulose is: Glucose

Ans 7) Glucose and galactose are Monosachharides

Ans 8) Carbohydrates and fats are used by living organisms mainly as Source of energy

Ans 9) A fat molecule is formed by the reaction of three fatty acid molecules with one molecule of Fats contain about twice energy as carbohydrates

Ans 10) The two chains of DNA are held together by Hydrogen_ bonds.

Ans 11). The bacteria that reside in the rumen of the cow are cellulolytic bacteria means they produce cellulase enzyme, which breaks down the cellulose into its building blocks glucose, which is then absorbed by the intestine. If we treat a cow with an antibiotic that kills this bacteria, then the cow will not be able to digest cellulose present in grass.