Sample Questions for Exam One
Multiple Choice. Choose the answer that best answers or completes the question.
1.
Life is organized in a hierarchical fashion. Which of the following sequences correctly lists that hierarchy as it increases in
complexity?
a. ecosystem, population, organ system, cell, community, molecule, organ, organism, tissue
b. cell, molecule, organ system, organ, population, tissue, organism, ecosystem, community
c. organism, organ system, tissue, population, organ, community, cell, ecosystem, molecule
d. molecule, cell, tissue, organ, organ system, organism, population, community, ecosystem
e. ecosystem, molecule, cell, tissue, organism, organ system, organ, community
2.
If you are asked to look into a microscope to see a plant cell, you will be looking for a cell that ,
a. has a membrane bound nucleus
b. does not have a membrane bound nucleus
c. does not use DNA as instructions to make proteins
d. makes up most of the tissues of your boy
e. none of the above
3.
Which of the following best demonstrates the unity among all living organisms?
a. descent with modification
b. the structure and function of DNA
c. natural selection
d. the three domains
e. emergent properties
4.
A hypothesis is,
a. the same as a theory.
b. a tentative answer to some question.
c. an explanatory idea that is broad in scope and supported by a large body of evidence.
d. a widely accepted idea about a phenomenon.
e. a widely accepted theory that is broad in scope and supported by a large body of evidence.
5.
A collection of organ systems working together to sustain life is called a(n)
a.
6.
If
a.
8.
c. organ
d. organism
e. compound
number of neutrons
number of neutrons & protons
number of protons only
16
d. average of the mass of all isotopes for that atom
e. valence shell electrons
O has an atomic number of 8 it has______________neutrons.
8
b. 19
c. 10
d. 26
e. there is not enough information
The numbers listed represent the number of electrons in the first, second and third energy levels respectively. On this basis, which
of the following is an unstable (reactive) atom?
a.
9.
b. tissue
The mass number of an atom is equal to the________________
a.
b.
c.
7.
cell
2,8,8
b.2,8
c.2
d.2,8,1
e.There is not enough information
An anion is formed when an atom ________________.
a. equally shares electrons with another atom
b. receives a proton from another atom
c. donates an electron to another atom
d. receives an electron from another atom
e. none of the above
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Sample Questions for Exam One
10. Nonpolar covalent bonds are formed when,
a. valence shell electrons are unequally shared
b. atoms involved in a bond have an extreme difference in electronegativity
c. valence shell electrons are equally shared
d. valence shell electrons are transferred from one atom to another
e. positively charged ions are formed
11. Examine the chemical C6H12O6, Which of the following statements about it is TRUE?
a. it is a protein
b. it is a phospholipid
c. it is an organic compound
d. it is an inorganic molecule
e. it is a nucleic acid
12. Which of the following statements about phospholipids is TRUE?
a. they are entirely hydrophobic
d. they are the main source of energy in the body
b. they have hydrophobic and hydrophilic regions
e. they are important for energy storage in the body
c. they are a type of cholesterol
13. Amino acids joining together to make a polypeptide is a good example of a(n) ___________ reaction.
a.
exchange
b. reversible
c. decomposition
d. dehydration
e. hydrolysis
14. In a water molecule, hydrogen and oxygen are held together by a(n) ____________ bond.
a. adhesion
b. ionic
c. nonpolar covalent
d. hydrogen
e. polar covalent
15. The tendency of water molecules to stick together is referred to as
a.
adhesion
b. polarity
c. cohesion
d. transpiration
e. evaporation
16. Which of the following statements about the plasma membrane is TRUE?
a. it plays a role regulating what can move into and out of the cell
b. the plasma membrane contains a variety of proteins
c. the plasma membrane helps maintain the shape of the cell
d. it is a bilayer of lipid
e. all of the above are true
17. What type of cellular junctions need to be present in order for a cells cytoplasm and its dissolved solutes to easily pass (flow)
from one cell to another?
a. gap junction
d. intermediate filaments
b. desmosomes
e. microtubules
c. tight junction
Matching. Choose the term on the right that matches the description on the left
18. responsible for protein synthesis____
19. produces ATP for the cell____
20. the modification and sorting of proteins happens in this organelle____
a. golgi apparatus
b. mitochondria
c. ribosome
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