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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342 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: Malaria
  • 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