College Biology Pretest

25 Questions | By Goddessbright | Updated: Mar 19, 2022 | Attempts: 354

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Questions and Answers

1.

Each element has its own characteristic atom in which
- A.
  
  The atomic weight is constant
- B.
  
  The atomic number is constant
- C.
  
  The mass number is constant
Correct Answer
B. The atomic number is constant
2.

A sodium ion (Na+) contains 10 electrons, 11 protons, and 12 neutrons. What is the atomic number of sodium?
- A.
  
  10
- B.
  
  11
- C.
  
  12
- D.
  
  23
- E.
  
  33
Correct Answer
B. 11
3.

Each water molecule is capable of forming:
- A.
  
  One hydrogen bond
- B.
  
  Three hydrogen bonds
- C.
  
  Four hydrogen bonds
- D.
  
  One covalent bond and two hydrogen bonds
- E.
  
  One covalent bond and three hydrogen bonds
Correct Answer
E. One covalent bond and three hydrogen bonds
4.

Adding a base to a solution would:
- A.
  
  Raise the pH
- B.
  
  Lower the pH
- C.
  
  Decrease the hydrogen ion concentration
- D.
  
  Do both a and c
- E.
  
  Do both b and c
Correct Answer
D. Do both a and c
5.

Temperature is a measure of:
- A.
  
  Specific heat
- B.
  
  Average kinetic energy of molecules
- C.
  
  Total kinetic energy of molecules
- D.
  
  Celsius degrees
- E.
  
  Joules
Correct Answer
B. Average kinetic energy of molecules
6.

Plants store most of their energy as:
- A.
  
  Glucose
- B.
  
  Glycogen
- C.
  
  Starch
- D.
  
  Sucrose
- E.
  
  Cellulose
Correct Answer
C. Starch
7.

If the nucleotide sequence of one strand of a DNA helix is GCCTAA, what would be the sequence on the complimentary strand?
- A.
  
  GCCTAA
- B.
  
  CGGAUU
- C.
  
  CGGATT
- D.
  
  ATTCGG
- E.
  
  TAAGCC
Correct Answer
C. CGGATT
8.

The ultrastructure of a chloroplast could be seen best using:
- A.
  
  Transmission electron microscope
- B.
  
  Scanning electron microscope
- C.
  
  Phase-contrast light microscope
- D.
  
  Fluorescence microscope
Correct Answer
A. Transmission electron microscope
9.

Contractile elements of muscle cells are:
- A.
  
  Intermiediate filaments
- B.
  
  Centrioles
- C.
  
  Microtubules
- D.
  
  Actin filaments
- E.
  
  Fibronectins
Correct Answer
D. Actin filaments
10.

A planet cell placed in a hypotonic environment will:
- A.
  
  Plasmolyze
- B.
  
  Shrivel
- C.
  
  Become turgid
- D.
  
  Become flaccid
- E.
  
  Lyse
Correct Answer
C. Become turgid
11.

Ions diffuse across membranes down their:
- A.
  
  Electrochemical gradient
- B.
  
  Electrogenic gradient
- C.
  
  Electrical gradient
- D.
  
  Osmotic gradient
Correct Answer
A. Electrochemical gradient
12.

Which of the following is mismatched with its location?
- A.
  
  Light reactions -- grana
- B.
  
  Electron transport chain -- thylakoid membrane
- C.
  
  Calvin cycle -- stroma
- D.
  
  ATP synthase -- double membrane surrounding chloroplast
- E.
  
  Splitting of water -- thylakoid space
Correct Answer
D. ATP synthase -- double membrane surrounding chloroplast
13.

How many "turns" of the Calvin Cycle are required to produce one molecule of glucose?
- A.
  
  1
- B.
  
  2
- C.
  
  3
- D.
  
  6
- E.
  
  12
Correct Answer
D. 6
14.

A signal molecule that binds to a plasma-membrane protein functions as a:
- A.
  
  Ligand
- B.
  
  Second messenger
- C.
  
  Protein phosphatase
- D.
  
  Protein kinase
- E.
  
  Receptor protein
Correct Answer
A. Ligand
15.

The longest part of the cell cycle is:
- A.
  
  Prophase
- B.
  
  G1 phase
- C.
  
  G2 phase
- D.
  
  Interphase
Correct Answer
D. Interphase
16.

How many chromatids would a cell with 12 chromosomes have in the G2 phase of its cell cycle?
- A.
  
  6
- B.
  
  9
- C.
  
  12
- D.
  
  24
- E.
  
  48
Correct Answer
D. 24
17.

The restoration of the diploid chromsome number after halving in meiosis is due to:
- A.
  
  Synapsis
- B.
  
  Fertilization
- C.
  
  Mitosis
- D.
  
  DNA replication
- E.
  
  Chiasmata
Correct Answer
B. Fertilization
18.

Homologous chromosomes:
- A.
  
  Have idenitcal genes
- B.
  
  Have genes for the same traits at the same loci
- C.
  
  Are found in gametes
- D.
  
  Seperate in meiosis II
Correct Answer
B. Have genes for the same traits at the same loci
19.

A 1:1 phenotypic ratio in a testcross indicates that:
- A.
  
  The alleles are dominant
- B.
  
  The dominant phenotype parent was a heterozygote
- C.
  
  The alleles segregated independently
- D.
  
  The alleles are codominant
Correct Answer
B. The dominant phenotype parent was a heterozygote
20.

Carriers of a genetic disorder:
- A.
  
  Are indicated by solid symbols on a family pedigree
- B.
  
  Will produce children with that disease
- C.
  
  Are heterozygotes for the gene that can cause the disorder
- D.
  
  Have a homozygous recessive genotype
Correct Answer
C. Are heterozygotes for the gene that can cause the disorder
21.

A son inherits color blindness from his:
- A.
  
  Mother
- B.
  
  Father
- C.
  
  Mother only if she is color blind
- D.
  
  Father only if he is color blind
- E.
  
  Mother only if she is not color blind
Correct Answer
A. Mother
22.

Sex-linked traits:
- A.
  
  Are carried on an autosome but expressed only in males
- B.
  
  Are coded for by genes located on a sex chromosome
- C.
  
  Are always inherited from the mother in mammals and fruit flies
- D.
  
  Are the same as sex-influenced traits
Correct Answer
B. Are coded for by genes located on a sex chromosome
23.

Transformation involves:
- A.
  
  The uptake of external genetic material, often from one bacterial strain to another
- B.
  
  The creation of a strand of RNA from a DNA molecule
- C.
  
  The infection of bacterial cells by phages
- D.
  
  The replication of DNA along the lagging strang
Correct Answer
A. The uptake of external genetic material, often from one bacterial strain to another
24.

The DNA of an organism has thymine as 20% of its bases. What percentage of its bases would be guanine?
- A.
  
  20%
- B.
  
  30%
- C.
  
  40%
- D.
  
  60%
- E.
  
  80%
Correct Answer
B. 30%
25.

Translocation involves the transfer of genetic material by means of:
- A.
  
  Plamids
- B.
  
  Bacteriophages
- C.
  
  Free DNA fragments
- D.
  
  Conjugation
Correct Answer
B. Bacteriophages

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Current Version
Mar 19, 2022

Quiz Edited by
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May 04, 2010

Quiz Created by
Goddessbright

College Biology Pretest

Each element has its own characteristic atom in which

A sodium ion (Na+) contains 10 electrons, 11 protons, and 12 neutrons. What is the atomic number of sodium?

Each water molecule is capable of forming:

Adding a base to a solution would:

Temperature is a measure of:

Plants store most of their energy as:

If the nucleotide sequence of one strand of a DNA helix is GCCTAA, what would be the sequence on the complimentary strand?

The ultrastructure of a chloroplast could be seen best using:

Contractile elements of muscle cells are:

A planet cell placed in a hypotonic environment will:

Ions diffuse across membranes down their:

Which of the following is mismatched with its location?

How many "turns" of the Calvin Cycle are required to produce one molecule of glucose?

A signal molecule that binds to a plasma-membrane protein functions as a:

The longest part of the cell cycle is:

How many chromatids would a cell with 12 chromosomes have in the G2 phase of its cell cycle?

The restoration of the diploid chromsome number after halving in meiosis is due to:

Homologous chromosomes:

A 1:1 phenotypic ratio in a testcross indicates that:

Carriers of a genetic disorder:

A son inherits color blindness from his:

Sex-linked traits:

Transformation involves:

The DNA of an organism has thymine as 20% of its bases. What percentage of its bases would be guanine?

Translocation involves the transfer of genetic material by means of: