Biology 189: Exam 1 Questions With Complete Solutions
____ are monomers that form polymers called _____ Correct
Answers nucleotides; nucleic acids
*Apply the pH scale appropriately when evaluating a solution*
Correct Answers page 32 and slide 42
*Chapter 1*
Summarize the five characteristics of life Correct Answers 1.
Organization: atoms make up molecules, which make up cells,
which make up tissues, and so on.
2. energy use: a kitten uses the energy from its mothers milk to
fuel its own groth
3. maintenance of internal consistency (homeostasis): your
kidneys regulate your body's water balance by adjusting the
concentration of your urine
4. Reproduction, growth, and development: an acorn germinates,
developed into an oak seedling, and, at maturity, reproduces
sexually to produce its own acorns
5. Evolution: increasing numbers of bacteria survive treatment
with antibiotic drugs.
*Chapter 2*
Why is chemistry important to understand biology? Correct
Answers It allows us to understand nutrition, allows us to test
for drugs, sugars, hormones, and indicate pregnancy.
*Chapter 3*
Three principles of cell theory Correct Answers 1. cells are the
fundamental units of life
,2. all living things are composed of cells
3. all cells come from. pre-existing cells
*Chapter 4*
Autotroph vs. heterotroph Correct Answers autotroph:
organisms that make their own food
heterotroph: organisms that obtain energy by consuming other
organisms
*Describe the chemical nature of steroids, and give an example
of their biological importance* Correct Answers - have four
fused carbon rings
*describe the variety and chemical characteristics of common
functional groups or organic compounds* Correct Answers
*different types of components that are associated with each
type of organelle* Correct Answers
*Evolution through natural selection will occur most rapidly for
populations of plants that* Correct Answers
*How does the central dogma of biology tie into cellular
location and cellular processes* Correct Answers
*Process of energy transformation* Correct Answers
*what is an example of each domain of life?* Correct Answers
*which of the following statements is false?
, a. emergent properties are function that arise from the
interaction between an organisms parts.
b. two fo the three domains contain prokaryotic organisms
c. when medical researchers test the effectiveness of a new drug,
they typically compare the new drug to a placebo
d. for a scientific study to be considered valid, the researchers
myst conduct experiments * Correct Answers
a human nerve cell that has an abnormal shape most likely has a
defective Correct Answers cytoskeleton
a neutral hydrogen atom with a mass number of 1 has ___
neutrons, ___ protons, and ___ electrons Correct Answers 0; 1;
1
A scientist has just observed a new phenomenon and wonders
how it
happens. What is the next step in his or her discovery of the
answer?
a. Observe
b. Hypothesize
c. Experiment
d. Peer review Correct Answers b. Hypothesize
A sugar is an example of a _________, whereas DNA is a
_________. Correct Answers carbohydrate; nucleic acid
acids Correct Answers dissociates in water, producing H+ and
an anion
acids increase H+
can be called proton donors
____ are monomers that form polymers called _____ Correct
Answers nucleotides; nucleic acids
*Apply the pH scale appropriately when evaluating a solution*
Correct Answers page 32 and slide 42
*Chapter 1*
Summarize the five characteristics of life Correct Answers 1.
Organization: atoms make up molecules, which make up cells,
which make up tissues, and so on.
2. energy use: a kitten uses the energy from its mothers milk to
fuel its own groth
3. maintenance of internal consistency (homeostasis): your
kidneys regulate your body's water balance by adjusting the
concentration of your urine
4. Reproduction, growth, and development: an acorn germinates,
developed into an oak seedling, and, at maturity, reproduces
sexually to produce its own acorns
5. Evolution: increasing numbers of bacteria survive treatment
with antibiotic drugs.
*Chapter 2*
Why is chemistry important to understand biology? Correct
Answers It allows us to understand nutrition, allows us to test
for drugs, sugars, hormones, and indicate pregnancy.
*Chapter 3*
Three principles of cell theory Correct Answers 1. cells are the
fundamental units of life
,2. all living things are composed of cells
3. all cells come from. pre-existing cells
*Chapter 4*
Autotroph vs. heterotroph Correct Answers autotroph:
organisms that make their own food
heterotroph: organisms that obtain energy by consuming other
organisms
*Describe the chemical nature of steroids, and give an example
of their biological importance* Correct Answers - have four
fused carbon rings
*describe the variety and chemical characteristics of common
functional groups or organic compounds* Correct Answers
*different types of components that are associated with each
type of organelle* Correct Answers
*Evolution through natural selection will occur most rapidly for
populations of plants that* Correct Answers
*How does the central dogma of biology tie into cellular
location and cellular processes* Correct Answers
*Process of energy transformation* Correct Answers
*what is an example of each domain of life?* Correct Answers
*which of the following statements is false?
, a. emergent properties are function that arise from the
interaction between an organisms parts.
b. two fo the three domains contain prokaryotic organisms
c. when medical researchers test the effectiveness of a new drug,
they typically compare the new drug to a placebo
d. for a scientific study to be considered valid, the researchers
myst conduct experiments * Correct Answers
a human nerve cell that has an abnormal shape most likely has a
defective Correct Answers cytoskeleton
a neutral hydrogen atom with a mass number of 1 has ___
neutrons, ___ protons, and ___ electrons Correct Answers 0; 1;
1
A scientist has just observed a new phenomenon and wonders
how it
happens. What is the next step in his or her discovery of the
answer?
a. Observe
b. Hypothesize
c. Experiment
d. Peer review Correct Answers b. Hypothesize
A sugar is an example of a _________, whereas DNA is a
_________. Correct Answers carbohydrate; nucleic acid
acids Correct Answers dissociates in water, producing H+ and
an anion
acids increase H+
can be called proton donors
