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NS 100, Biology, Fall Quarter 2006, Oakdale/Globe College campus
NS 100 Biology Fall 2006, Instructor: Theresa Holmes
Closed-Book Worksheet
Tuesday, November 21, 2006
Name:
1. Which of the following is the smallest unit of an organism that can survive and reproduce on its own?
a. molecule b. cell
c. tissue d. organ
2. Which of the following is the smallest unit of an element that still retains the properties of the element?
a. electron b. atom
c. molecule d. cell
3. Which of the following does not belong in the Eukarya?
a. plants b. fungi
c. archaea d. protists
4. What is the source of new traits in a population?
a. artificial selection b. natural selection
c. adaptation d. mutation
5. Which subatomic particles are always equal in neutral atoms?
a. electrons and neutrons b. electrons and protons c. neutrons and protons
d. electrons, neutrons and protons e. none of these
6. Isotopes of the same element differ in the number of
a. electrons. b. neutrons. c. protons.
d. electrons and protons. e. protons and neutrons.
7. Which substance is NOT an element?
a. water b. oxygen c. carbon
d. chlorine e. hydrogen
8. Water is important to living organisms because
a. of its cohesive properties. b. of its temperature stabilizing effect.
c. it is a liquid at room temperature. d. it has the capacity to dissolve many substances.
e. all of these
9. Which components of an atom are arranged in various energy levels or orbitals?
a. electrons b. protons c. neutrons d. electrons and protons
e. protons and neutrons
10. The bond in table salt (NaCl) is
a. polar. b. ionic. c. covalent. d. double. e. nonpolar.
11. What is formed when an atom loses or gains an electron?
a. a new element b. ion c. molecule d. bond e. isotope
12. The three most common atoms in your body are
a. hydrogen, oxygen, and carbon. b. carbon, hydrogen, and nitrogen.
c. carbon, nitrogen, and oxygen. d. nitrogen, hydrogen, and oxygen.
e. carbon, oxygen, and sulfur.
13. Amino acids are the building blocks for
a. proteins. b. steroids. c. lipids. d. nucleic acids. e. carbohydrates.
14. Carbon (atomic number = 6) forms bonds with a maximum of how many other atoms?
a. 2 b. 3 c. 4 d. 5 e. 6
15. What kind of bond exists between two amino acids in a protein?
a. peptide b. ionic c. hydrogen d. amino e. sulfhydroxyl
16. Prokaryotic cells do NOT have
a. nucleoid regions. b. membrane-bound nuclei. c. cytoplasm.
d. a plasma membrane. e. DNA.
17. Prokaryotes
a. have DNA regions in the cytoplasm. b. are usually unicellular.
c. have cell walls. d. are bacteria. e. all of these.
18. According to the first law of thermodynamics
a. the amount of energy in the universe is constant. d. both a and b
b. chemical reactions do not create or destroy energy.
c. energy can change from one form to another. e. all of these
19. 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.
20. Which is NOT found as a part of all cells?
a. cell membrane b. cell wall c. ribosomes d. DNA e. RNA
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