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2025 BIO 251 Exam 2 New Latest Version Best Studying Material with All Questions and Correct Answers
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2025 BIO 251 Exam 2 New Latest Version Best Studying Material with All Questions and Correct Answers

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  • September 23, 2024
  • 17
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • 2025 bio 251 exam 2 new
  • 2025 bio 251 exam 2
  • bio 251 exam 2 new
  • 2025 bio 251 exam 2 new latest version best study
  • 2025 bio 251 exam 2 new latest version

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2025 BIO 251 Exam 2 New Latest Version Best
Studying Material with All Questions and
Correct Answers
Select the three phases of EMP glycolysis
A. Lysis Phase
B. Biosynthetic Phase
C. ATP Synthesis Phase
D. Reductive Phase
E. Energy-Conserving Phase
F. Energy-Investment Phase
G. Transition Phase ------------ Correct Answer ------------- Energy-conserving phase
Energy-investment phase
Lysis Phase

Type I hypersensitivities require which of the following initial priming events to occur?
a) sensitization
b) secondary immune response
c) cellular trauma
d) degranulation ------------- Correct Answer -------------- a) sensitization

Which of the following are the main mediators/initiators of type II hypersensitivity reactions?
a) antibodies
b) mast cells
c) erythrocytes
d) histamines ------------- Correct Answer -------------- a) antibodies

Which of the following is a common treatment for type III hypersensitivity reactions?
a) anti-inflammatory steroid treatments
b) antihistamine treatments
c) hyposensitization injections of allergens
d) RhoGAM injections ------------- Correct Answer -------------- a) anti-inflammatory steroid treatments

Which of the following is NOT an example of a type 4 hypersensitivity?
a) latex allergy
b) contact dermatitis (contact w/ poison ivy
c) a positive tuberculin skin test
d) hemolytic disease of the newborn ------------- Correct Answer -------------- d) hemolytic disease of the
newborn

Which of the following steps in the viral life cycle would not occur inside a normal human cell?
A. Making +RNA from -RNA
B. Copying RNA into DNA
C. Cutting a very large protein into several smaller proteins with independent functions
D. None of these would occur in a normal human cell ------------ Correct Answer ------------- D.

,None of these would occur in a normal human cell

Which of the following might result from lysogenic converstion?
A. A bacteria with new genes gained from a virus
B. A virus with genes gained from another virus
C. A bacteria that has gained the ability to become a virus
D. A bacteria with new genes gained from another bacteria but transferred by a virus ------------
Correct Answer ------------- A. A bacteria with new genes gained from a virus

All viruses...
A. Have a lipid envelope
B. Are obligate intracellular parasites
C. Can become proviruses
D. Contain RNA ------------ Correct Answer ------------- B. Are obligate intracellular parasites

Which of the following would be a slow infection?
A. A virus infects a person and produces many virus particles. Soon the person's immune system
learns to fight the virus and they stop making virus particles. Years later that person's immune
system is weakened due to poor diet and lack of sleep and they begin producing virus particles
again and the symptoms return.
B. A virus infects a person and produces many virus particles. The person becomes ill and sheds
virus. A few weeks later their immune system defeats the virus and they stop making virus
particles
C. A virus infects a person and produces many virus particles. This continues for months and
years with damage accumulating over time. Eventually the person dies as a result of the infection
D. A virus infects a person, but they do not produce many virus particles immediately. After a
number of months they begin producing a few virus particles, but do not show sym ------------
Correct Answer ------------- D. A virus infects a person, but they do not produce many virus
particles immediately. After a number of months they begin producing a few virus particles, but
do not show symptoms. The infection continues to spread throughout the body until several years
later they are producing a large number of virus particles and have very severe symptoms. Later
they die from the disease.

What step would you likely find in the life cycle of an animal virus, but not in a bacteriophage?
A. Integration into host genome
B. Binary fission
C. Entry
D. Uncoating ------------ Correct Answer ------------- D. Uncoating

When animal viruses are released the cell is lysed
A. True
B. False ------------ Correct Answer ------------- B. False

Influenza is a(n) ____ infection.
A. Acute
B. Latent

, C. Persistant
D. Chronic ------------ Correct Answer ------------- A. Acute

Which of the following would NOT be performed by a virulent phage?
A. Excision
B. Synthesis
C. Assembly
D. Attachment ------------ Correct Answer ------------- A. Excision

Of those who are diagnosed with COVID, about 1% die. This is a measure of:
A. Mortality rate
B. Morbidity rate
C. Prevalence rate
D. Case fatality rate ------------ Correct Answer ------------- D. Case fatality rate

Categorize the following as signs or symptoms.
Redness
Dizziness
Red blood cell count
Temperature
Pulse
Fatigue
Nausea
Pain ------------ Correct Answer ------------- Signs:
RBC count
Temp
Pulse
Redness

Symptoms:
Nausea
Pain
Patigue
Dizziness

Giardia naturally lives in rivers and streams. When humans come by and drink contaminated
water from these streams they often contract giardiasis, which causes diarrhea. How would you
characterize the reservoir of this disease?
A. Human reservoir
B. Animal reservoir
C. Spacial reservoir
D. Environmental reservoir ------------ Correct Answer ------------- D. Environmental reservoir

Mononucleosis is a viral disease that is primarily spread through the saliva, either through
kissing or the contamination of some sort object like a drink. Based on this description, which of
the following routs of transmission does it use:

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