Bio 1110 Practice Test S (Chps.1-3)
1. Which of the following is the most abundant in the human body?
A) Carbon dioxide
B) Water
C) Hydrogen
D) ATP
E) Carbon monoxide
2. Which statement is true regarding chemically active elements?
A) The outermost energy level is not fully occupied by electrons
B) They tend to gain, lose, or share electrons (form bonds) with other atoms to achieve stability
C) All of the above
D) None of the above
3. Deoxyribose is
A) A carbohydrate
B) A monosaccharide
C) A protein
D) Both a and b are correct
E) A lipid
4. True or False? The sodium/potassium pump uses ATP to pump sodium into the cell and potassium
in.
A) True
B) False
5. The scientist who studies the effects of diseases on organ system functions would
be classified as a:
A. histophysiologist.
B. cell physiologist.
C. system physiologist.
D. pathophysiologist
6. Identify the product formed from the phosphorylation of ADP.
A) Adenine
B) Adenosine triphosphate
C) Deoxyribonucleic acid
D) ribose
7. The alpha-helix and pleated sheet are examples of ________ protein structure
A) primary
B) tertiary
C) secondary
D) quaternary
E) pentanary
8. The basic functions performed by all living organisms include(s)
A) reproduction.
B) metabolism.
C) growth.
D) movement.
E) All of the answers are correct.
Answer: E
9.
A)
B)
C)
D)
E)
Pinocytosis
is a form of exocytosis.
involves ingestion of liquids rather than particles.
does not require ATP.
forms vesicles only when large amounts of material are being transported.
does not require the formation of vesicles.
10.
A)
B)
C)
D)
E)
Cilia and flagella are distinguished from each other on the basis of
width and numbers.
length and numbers.
depth and numbers.
length and width.
none of the above
11.
A)
B)
C)
D)
E)
Messenger RNA
is synthesized when a portion of a DNA molecule is transcribed.
directs the synthesis of DNA.
determines the sequence of nucleotides in the anticodons of tRNA.
directs the synthesis of centrioles in the cytoplasm.
is not involved in the synthesis of proteins.
12.
A)
B)
C)
D)
E)
The mass number of an atom is the
number of protons in the atom.
number of neutrons in the atom.
number of protons and electrons in the atom.
number of electrons and neutrons in the atom.
number of neutrons and protons in the atom.
13. The vital property of living things that causes them to take certain actions in response to
change is called
A) movement.
B) growth.
C) responsiveness.
D) metabolism.
E) excretion.
14.
A)
B)
C)
D)
E)
Energy
has mass.
is the capacity to do work.
has weight.
takes up space.
cannot be stored.
15.
A)
B)
C)
D)
E)
Covalent bonds form when
atomic nuclei fuse.
molecules become ionized.
neutrons are transferred from one atom to another.
protons are lost from atoms.
electrons are shared between two atoms.
16.
If you compare a cell with a manufacturing plant that exports goods, the cell's _____ could be
compared to the manufacturing plant's shipping department.
A)
nucleus
B)
lysosome
C)
Golgi apparatus
D)
endoplasmic reticulum
E)
ribosome
17.
A)
B)
C)
D)
E)
Translation
requires three types of DNA.
requires the pairing of codons on mRNA with anticodons on tRNA.
involves synthesis of RNA from DNA molecules.
takes place in the nucleus.
requires replication of DNA.
18.
A DNA base sequence is A T G C C G. The sequence of bases in a strand of mRNA transcribed
from this sequence of bases in DNA would be
A)
T A C G G C.
B)
U T C G G U.
C)
U A C G G C.
D)
A U G C C G.
E)
TAGGGG
19. DNA synthesis occurs during
A)
the G1 phase of interphase.
B)
telophase.
C)
the S phase of interphase.
D)
anaphase.
E)
metaphase.
20.
A)
B)
C)
D)
E)
In prophase
the chromosomes condense, shorten, and thicken.
the spindle fibers disappear.
the chromosomes replicate.
cytokinesis occurs.
DNA is synthesized.
21.
A)
B)
C)
D)
E)
Meiosis is the process of cell division that results in the formation of
skin cells.
gametes (egg and sperm).
diploid cells.
malignant cells.
somatic cells.
22.
A)
B)
C)
D)
E)
Subatomic particles located around the nucleus of an atom are
protons.
electrons.
neutrons.
neutrinos.
photons.
23.
A)
B)
C)
D)
E)
Microvilli
are extensions of the lysosomal membrane.
function to make the cell mobile.
are supported by microtubules.
move the cell.
increase the surface area of the cell.
24.
A)
B)
C)
D)
E)
A red blood cell that is placed in a hypertonic solution,
gains water.
loses water.
floats.
ruptures.
neither gains nor loses water.
25.
A person suffered from burns over a large part of his body. Evaporation of fluid from the
surface of burned areas occurs. As a result of the evaporation process, cells will tend to
A)
shrink.
B)
swell.
C)
rupture.
D)
first swell and then resume their original shape.
E)
remain unchanged.
26.
A)
B)
C)
D)
E)
Receptor-mediated endocytosis
does not need ATP; the receptors supply the energy.
exhibits specificity.
occurs if oxygen is available.
is a type of passive transport.
moves materials out of the cell.
27.
A)
B)
C)
D)
E)
The cytoskeleton consists of
lipochromes, microfilaments, and microtubules.
actin filaments, mitochondria, and intermediate filaments.
microfilaments, mitochondria, and lipochromes.
microtubules, actin filaments, and intermediate filaments.
ribosomes, the nucleus, and the Golgi apparatus.
28.
A)
B)
C)
D)
E)
Which of the following cell organelles does not contain microtubules?
cilia
flagella
spindle fibers
centrioles
All of the above contain microtubules.
29.
A)
B)
C)
D)
E)
Which of the following organelles function in the destruction of nonfunctional organelles?
endoplasmic reticulum
centrioles
basal bodies
lysosomes
mitochondria
30.
A)
B)
C)
D)
E)
Ribosomes are organelles responsible for
protein synthesis.
manufacturing lipids.
cell movement and cell shape.
packaging "cell products" for export.
energy production.
31.
A)
B)
C)
D)
E)
A cell that produces many proteins for secretion from the cell would have large numbers of
rough ER and Golgi.
lysosomes and Golgi.
Golgi and microvilli.
ribosomes and centrioles.
mitochondria and cilia.
32.
A)
B)
C)
D)
E)
The hydrogen and oxygen atoms in a molecule of water are held together by
ionic bonds.
peptide bonds.
savings bonds.
polar covalent bonds.
nonpolar bonds.
33.
A cell's ability to replenish ATP is reduced by a metabolic poison. Which organelle is being
affected?
A)
nucleus
B)
centriole
C)
microtubule
D)
mitochondrion
E)
ribosomes
34.
A)
B)
C)
D)
E)
Which of the following structures is found in the nucleus?
cristae
cytosol
cisternae
chromosome
flattened membrane sacs
35.
A)
B)
C)
D)
E)
Which of the following correctly matches a nuclear structure with its function?
chromosomes - contains RNA and histones
nuclear envelope - contains the nucleolar organizer
nuclear pores - allow molecules to move between the nucleus and cytoplasm.
chromatin - fluid portion of the nucleus
nucleolus - DNA synthesis
For questions 36 to 40 match the following types of membrane proteins to its function.
A)
have exposed site on outer cell surface that can attach to ligand
B)
integral proteins that move ions or molecules across plasma membrane
C)
form a passageway through the plasma membrane
D)
allow cells to identify one another
E)
proteins that can catalyze chemical reactions on inner or outer surface of plasma membrane
36.
37.
38.
39.
40.
Marker molecules
Channel protein
Receptor molecules
Enzymes
Carrier proteins
41 . Damage at the cellular, tissue, or organ level often affects the entire system. This
supports the view that:
A. each level is totally independent of the others.
B. each level has its own specific function.
C. each level is totally dependent on the others.
D. the lower levels depend on the higher levels.
42.
A)
B)
C)
D)
E)
Plasma membrane phospholipids
have polar (charged) tails.
are arranged in a single layer.
have tails that face the exterior of the membrane.
are 95% cholesterol.
have a hydrophilic head and hydrophobic tails.
43.
The smallest particles of an element that still exhibits the chemical characteristics of that
element is
A)
an electron.
B)
an atom.
C)
a chemical bond.
D)
an orbital.
E)
a proton.
44.
A)
B)
C)
D)
E)
The transfer of information from DNA to messenger RNA (mRNA) is known as
transduction.
translocation.
translation.
transcription.
transmutation.
45.
A)
B)
C)
D)
E)
An atom has an atomic number of 19 and a mass number of 39. This atom will have
19 neutrons.
20 neutrons.
39 neutrons.
58 neutrons.
20 electrons.
46.
A)
B)
C)
D)
E)
A neutral atom will become a cation if it
gains electrons.
gains protons.
loses electrons.
loses protons.
gains neutrons.
47.
Human somatic cells contain _____ chromosomes, human gametes contain _____
chromosomes.
A)
23; 46
B)
23; 23
C)
46; 46
D)
46; 23
E)
92; 46
48.
A)
B)
C)
D)
E)
The molecular formula H2O means
one hydrogen atom and 2 oxygen atoms.
one hydrogen atom and 1 oxygen atom.
2 hydrogen atoms and 1 oxygen atom.
2 hydrogen atoms and 2 oxygen atoms.
none of the above.
49.
A)
B)
C)
D)
E)
Cations and anions that dissociate in water are sometimes called
nonelectrolytes, because they do not conduct an electrical current.
solutes.
electrolytes, because they can conduct an electrical current.
A and B
B and C
50.
DNA replication results in two new DNA molecules. Each of these new molecules
A)
has two newly synthesized strands of nucleotides.
B)
has one strand of nucleotides from the parent DNA and one newly synthesized strand of
nucleotides.
C)
has two strands of nucleotides from the parent.
D)
has a single strand of nucleotides.
E)
are incomplete copies of the original.
51.
A)
B)
C)
D)
E)
Which of the following is a synthesis reaction?
Two amino acids are bonded together to form a dipeptide.
Sucrose is chemically separated to form one molecule of glucose and one molecule of fructose.
Sodium chloride is dissolved in water.
Several dipeptide chains are formed from digestion of a long polypeptide chain.
ATP is converted to ADP.
52.
A)
B)
C)
D)
E)
Which of the following factors will influence the rate of chemical reactions?
temperature
concentration of reactants
presence of catalysts
presence of enzymes
all of these will influence the rate of chemical reactions
53.
A)
B)
C)
D)
E)
Which of the following sequences is correct?
translation  protein synthesis  transcription
transcription  translation  protein synthesis
transcription  protein synthesis  translation
translation  transcription  protein synthesis
protein synthesis  translation transcription
54.
A)
B)
C)
D)
E)
Substances dissolved in the liquid portion of a solution are called
solutes.
solvents.
catalysts.
osmoles.
insoluble.
55.
Solution A has a pH of 10 and solution B has a pH of 2. Which of the following statements about
these solutions is true?
A)
Solution A and solution B are both basic.
B)
Solution B is basic.
C)
Solution A is acidic.
D)
Solution B has a higher hydrogen ion concentration than solution A.
E)
Solution A has a higher hydrogen ion concentration than solution B.
56.
A)
B)
C)
D)
E)
Which of the following lists includes only monosaccharides ?
glycogen, glucose, sucrose
starch, glycogen, cellulose
glucose, fructose, galactose
ribose, glycogen, glucose
deoxyribose, glycogen, starch
57.
A)
B)
C)
D)
E)
The molecule used most frequently by cells as a fuel belongs to which of the following groups?
prostaglandins
carbohydrates
nucleic acids
steroids
phospholipids
58) True or false when body temperature rises, a center in the brain initiates physiological changes to
decrease the body temperature. This is an example of negative feedback.
A) True
B) False
59.
A)
B)
C)
D)
E)
Triglycerides are composed of
monosaccharides.
amino acids.
nucleotides.
glycerol and fatty acids.
none of the above.
60.
A)
B)
C)
D)
E)
Adjacent amino acids in a polypeptide chain are held together by
hydrogen bonds.
ionic bonds.
Van der Waals bonds.
peptide bonds.
high energy bonds.
61.
A)
B)
C)
D)
E)
The minimum energy required to start a chemical reaction
moves in energy surges.
results from random molecular movement.
comes from ionic energy motion.
is elevated by a catalyst.
can be lowered by enzymes.
Short answer :
62. Differentiate between Growth and Development :
63. Define Homeostais :
64 Differentiate between Mitosis and Meosis :
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
41.
42.
43.
44.
45.
46.
47.
48.
B
B
D
B
D
B
C
E
B
B
A
E
C
B
E
C
B
C
C
A
B
B
E
B
A
B
D
E
D
A
A
D
D
D
C
D
C
A
E
B
C
E
B
D
B
C
D
C
49.
50.
51.
52.
53.
54.
55.
56.
57.
58.
59.
60.
61.
62.
E
B
A
E
B
A
D
C
B
A
D
D
E