Biology 105 Test 1 Quizzes

10. Of the following, pH ____ is the most acidic. a. 1 b. 3 c. 6 d. 7 e. 8

a. 1

4. Which letter identifies this cell's flagellum? a. A b. B c. C d. D e. E

a. A

6. A polypeptide chain is composed of: a. amino acids b. proteins c. nucleic acids d. fatty acids e. monosaccharides

a. amino acids

1. What are the fundamental building blocks of all matter? a. atoms b. compounds c. ions d. molecules e. electrons

a. atoms

5. What type of bond is formed whenever atoms share a pair of electrons? a. covalent b. hydrogen c. ionic d. double e. peptide

a. covalent

2. To see objects smaller than those that can be resolved by a light microscope, we usually use microscopes that employ a beam of: a. electrons b. photons c. protons d. neutrons e. X-rays

a. electrons

10. What kind of bond exists between two amino acids in a protein? a. peptide b. ionic c. hydrogen d. amino e. sulfhydroxyl

a. peptide

4. Amino acids are the building blocks for: a. proteins b. steroids c. lipids d. nucleic acids e. carbohydrates

a. proteins

2. Four of the five answers are elements. Select the exception: a. water b. oxygen c. carbon d. chlorine e. hydrogen

a. water

8. For an atom to be neutral, it must have the same number of: a. electrons and neutrons b. electrons and protons c. neutrons and protons d. neutrons only e. electrons, neutrons, and protons

b. electrons and protons

7. Carbon has several isotopes including 12C and 14C. These isotopes differ in the number of: a. electrons only b. neutrons only c. protons only d. electrons and protons e. protons and neutrons

b. neutrons only

6. Which of the following is a positive subatomic particle? a. neutron only b. proton only c. electron only d. neutron and proton e. proton and electron

b. proton only

1. One portion of the cell theory states that ____. a. all cells have a nucleus b. all cells divide by meiosis c. all living organisms are made up of one or more cells d. cells arise through spontaneous generation e. growth is solely the result of cell division

c. all living organisms are made up of one or more cells

9. Water is an example of a(n): a. atom b. ion c. compound d. mixture e. element

c. compound

9. The formation of large molecules from small subunits is known as what kind of reaction? a. oxidation b. reduction c. condensation d. hydrolysis e. decarboxylation

c. condensation

5. Nucleotides contain what kind of sugars? a. three−carbon b. four−carbon c. five−carbon d. six−carbon e. seven−carbon

c. five−carbon

1. How many vacancies does carbon have? a. two b. three c. four d. five e. six

c. four

4. How many protons does the carbon element have? a. one b. three c. six d. nine e. twelve

c. six

8. Humans are unable to digest which type of carbohydrate? a. glucose b. glycogen c. starch d. cellulose e. fructose

d. cellulose

7. Which lipid forms cell membranes? a. unsaturated fats b. steroids c. waxes d. phospholipids e. saturated fats

d. phospholipids

3. Which letter identifies this cell's nucleus? a. A b. B c. C d. D e. There is no nucleus.

e. There is no nucleus.

3. In the shell model, the second shell can hold up to _____ electrons. a. one b. two c. four d. six e. eight

e. eight

2. What is a "building block" of carbohydrates? a. glycerol b. nucleotide c. amino acid d. fatty acid e. monosaccharide

e. monosaccharide

3. Four of the five answers are lipids. Select the exception. a. steroids b. triglycerides c. oils d. waxes e. oligosaccharides

e. oligosaccharides