Free Acellular Life MCQs with Answers
342 Acellular Life MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Viruses are acellular infectious particles whose capsid, nucleic acid and host-dependent replication distinguish them from living cells. HIV infection covers transmission, replication, effects on helper T cells, progression to AIDS, symptoms, prevention and treatment, while AIDS is the disease state caused by advanced immune-system damage rather than a separate virus.
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Read the Acellular Life notesFree MDCAT chapter notes with key terms342 questions · page 9 of 18
- A. Viruses
- B. Ingestion
- C. Binary fission
- D. Physical contact
Explanation: Transduction is a process of genetic recombination in bacteria where DNA is transferred from one bacterium to another through a…
Correct answer: Viruses- A. Virus
- B. Bacillus
- C. Viroid
- D. Prion
Explanation: Hepatitis D, also known as delta hepatitis, is indeed caused by the hepatitis D virus (HDV).HDV is a small, circular RNA virus that…
Correct answer: Virus- A. The protein of T2 and DNA of T4
- B. The protein of T4 and DNA of T2
- C. The protein and DNA of T2
- D. The protein and DNA of T4
Explanation: The phages produced in the host cell would have the protein coat of phage T2 and the DNA of phage T4.
Correct answer: The protein of T2 and DNA of T4- A. AIDS
- B. Malaria
- C. Influenza
- D. Chickenpox
Explanation: Malaria is not a viral disease and is caused by the protozoan Plasmodium.
Correct answer: Malaria165. The viruses are:
- A. Cellular
- B. Prokaryotes
- C. Non-cellular
- D. Eukaryotes
- E. Visible with naked eye
Explanation: Viruses are classified as non-cellular because they lack the cellular structures that define living cells, such as a cell membrane…
Correct answer: Non-cellular- A. B lymphocytes
- B. Helper T lymphocytes
- C. Cytotoxic T lymphocytes
- D. Memory cells
- E. Macrophages
Explanation: Explanation for this question will be added soon.
Correct answer: Helper T lymphocytes- A. Male
- B. Female
- C. AIDS patient
- D. Athletes
Explanation: Aspergillosis occurs in humans, birds, and other animals. Aspergillosis occurs in chronic or acute forms which are clinically very…
Correct answer: AIDS patient- A. Measles
- B. Influenza
- C. Hepatitis A
- D. AIDS
Explanation: a. Measles: Measles weakens the immune system, making individuals more susceptible to opportunistic infections.
Correct answer: AIDS- A. It is a retrovirus
- B. It is surrounded by an envelope
- C. It does not cause AIDS
- D. It causes deficiency of the human immune system
Explanation: It is a well known fact that HIV virus does cause AIDS.
Correct answer: It does not cause AIDS- A. 2001
- B. 1999
- C. 2005
- D. 2000
Explanation: Experimental administration of the HIV virus began in 2001 (BOOK INFORMATION.)
Correct answer: 2001- A. RBCs
- B. Platelets
- C. Leukocytes
- D. None of these
Explanation: The human immunodeficiency virus (HIV) infects leukocytes, also known as white blood cells.
Correct answer: Leukocytes- A. 1994
- B. 1984
- C. 1950
- D. 1920
Explanation: The AIDS virus (HIV) was discovered in 1984.
Correct answer: 1984- A. Human Immunodeficiency Virus
- B. Parvovirus
- C. Influenza Virus
- D. Paramyxovirus
Explanation: HIV (Human Immunodeficiency Virus) is a virus that attacks the body's immune system.
Correct answer: Human Immunodeficiency Virus- A. When it attacks the T cells
- B. When it replicates at maximum level
- C. When it destroys the body cells
- D. All of these
Explanation: AIDS is the late stage of HIV infection that occurs when the body's immune system is badly damaged because of the virus.
Correct answer: All of these- A. Replicase
- B. Reverse transcriptase
- C. Transcriptase
- D. Reverse replicase
Explanation: HIV is the causative agent of AIDS. It is a retrovirus. The enzymes needed for HIV replication are reverse transcriptase, integrase, and…
Correct answer: Reverse transcriptase- A. A person has AIDS
- B. A person having two positive tests for HIV
- C. A person can transmit the HIV
- D. A person is safe from AIDS
Explanation: Option: C Being HIV positive means there is evidence of presence of the HIV in the body and is a chance of transferring the virus through…
Correct answer: A person can transmit the HIV- A. 11
- B. 12
- C. 13
- D. 14
Explanation: Option B is correct because it is fact that HIV glycoprotein is composed of 12 subunits.
Correct answer: 12- A. Heterosexuals
- B. Homosexuals
- C. Both
- D. None
Explanation: The AIDS was reported by some physicians in early 1980's in young males having one or more of complex symptoms such as severe pneumonia, a…
Correct answer: Homosexuals- A. Sexual contact
- B. Blood
- C. Breast feeding
- D. All of the above
Explanation: HIV is a sexually transmitted disease that spreads to the blood, especially in trageting cells of the immune system known as T-cells thus…
Correct answer: All of the above- A. RNA polymerase I
- B. DNA polymerase II
- C. Reverse transcriptase I
- D. Reverse transcriptase
Explanation: HIV pathogenesis is a condition in which there is a competition between HIV replication and the immune responses of the patient.
Correct answer: Reverse transcriptase