Bio181-Quiz2
1. Chlorine (Cl) has 7 valence electrons. In order to stabilize, Cl may gain an
e- and become an ion with: a) 2 positive charge; b) neutral charged; c) 2
negative charge; d) 1 positive charge; e) 1 negative charge
2. In Red/Ox reactions, the reduced molecule, a) gains an e- b) loses an ec) gains a proton; d) loses a covalent bond; e) forms an ionic bond
3. The chemical bond which holds two separate water molecules is a ___
bond. a) ionic; b) polar covalent; c); hydrogen; d) nonpolar covalent
4. The chemical reaction where water is removed during the formation of a
covalent bond linking two monomers (small units) is known as ___. a)
dehydration; b) hydrolysis; c) photosynthesis; d) protein synthesis
5. The monomer that makes up polysaccharides is ____. a) amino acids; b)
glucose; c) fatty acids; d) nucleotides; e) glycerol
6. Proteins are composed of which of these monomers? a) amino acids; b)
glucose; c) fatty acids; d) nucleotides; e) glycerol
7. Which of these is not a function of lipids? a) energy storage; b) part of
membranes in cells; c) hormones; d) enzymes; e) sex hormones
8. All living things use the same ___ amino acids. a) 4; b) 20; c) 100; d) 64
9. The linear sequence of amino acids determines the ___ structure of a
protein. a) primary; b) secondary; c) tertiary; d) quaternary
10. Which of these is not a nucleotide base found in DNA? a) uracil; b)
adenine; c) guanine; d) thymine; e) cytosine
11. Which of these carbohydrates would constitute a dietary fiber (roughage)?
a) starch (amylose); b) cellulose; c) glucose; d) fructose; e) lactose
12. A diet high in _____ has been considered less healthy. This type of
material is largely found in animals. a) saturated fats; b) testosterone; c)
unsaturated fats; d) plant oils; e) hydrogenated fats
13. The energy locked inside a carbohydrate molecule is most readily
accessible (ie. immediately usable) in what form a) fat; b) disaccharide;
c) glucose; d) polysaccharide; e) enzyme
14. Phospholipids are important components in ____. a) cell walls; b)
cytoplasm; c) DNA; d) cell membranes; e) cholesterol
15. There are ____ micrometers (µm) in one millimeter (mm). a) 1; b) 10; c)
100; d) 1000; e) 1/1000
16. Eukaryotic cells typically range in size between ___ and ___ micrometers
(µm). a) 10-100; b) 1-10; c) 100-1000; d) 1/10-1/1000
17. Chloroplasts and bacteria are ___ in size. a) similar; b) at different ends of
the size range; c) both 100 microns; d) none of these.
18. Plant cells have both ___ and ___, which is not all true of animal cells. a)
mitochondria, chloroplasts; b) cell membranes, organelles; c) ribosomes,
nucleus; d) ER, Golgi
19. The ___ is the membrane enclosed structure in eukaryotic cells that
contains the DNA of the cell. a) mitochondrion; b) chloroplast; c)
nucleolus; d) nucleus
20. Ribosomes are the structures in a cell where ___ are synthesized. a)
polysaccharides; b) proteins; c) lipids; d) DNA
21. The mitochondrion functions in ____. a) lipid storage; b) protein synthesis;
c) photosynthesis; d) DNA replication; e) energy (ATP) production
22. The chloroplast functions in ____. a) lipid storage; b) protein synthesis; c)
photosynthesis; d) DNA replication; e) ATP synthesis
23. Which of these cellular organelles have their own DNA? a) chloroplast; b)
nucleus; c) mitochondrion; d) all of these; e) none of these