19. What statement best describes \"biology\" a. b. c. d. e. The science of life

Question

19. What statement best describes "biology" a. b. c. d. e. The science of life The naming of organisms The study of natural selection The measurement of populations The study of how organisms are related to one another 20. Which atom would most likely be involved in an iconic bond? a. Hydrogen b. Oxygen C. Sodium d. Nitrogen e. Helium 21. Which carbohydrate is the most structurally complex? a. Polymer b. Monomer c. Phospholipid d. Polysaccharide e. Monosccharide 22. What type of molecule carries the hereditary information of an organism a. DNA b. RNA

Explanation / Answer

19 - The correct answer is option A that is science of life.

This definition best describes the biology.

20 - The correct answer is option C that is sodium can form an ionic bond because it can be converted to Na+ and it can be paired with other negatively charged molecules and form ionic bond.

21- The correct answer is option D that is Polysaccharides is the most complex carbohydrate.

Phospholipid is not a carbohydrate, it is a lipid.

Polymer is when cluster of monomeric molecules come together, that can be any molecule like carbohydrate, protein and lipid.

22) The option A that is DNA is the correct answer.

Dna carries the genetic information that is hereditary.

RNA is responsible for production of protein.

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