Biology Practice MCQ Page 30

Multiple Choice questions for Biology in the sets of 10 each on one page with questions and answers. All sets are useful in the preparation of subject tests for employment or admission.
Question: 2440   Rod shaped bacteria are known as
  1. Cocci
  2. Bacilli
  3. Spirilla
  4. None of the above
Question: 2441   Cork-screw shaped bacteria are known as
  1. Cocci
  2. Bacilli
  3. Spirilla
  4. None of the above
Question: 2443   In many bacteria the cell wall is enclosed within a smile capsule made up of
  1. Polysaccharide
  2. Celluulose
  3. Amino acids
  4. Protein
Question: 2444   The DNA of the bacterium is found present in a distinct nuclear region called
  1. Nucleolus
  2. Centrosome
  3. Nucleoid
  4. Nucleus
Question: 2446   The DNA bacterium consists of ring -like pieces known as the
  1. Plasmids
  2. Genes
  3. Chromosomes
  4. Mesosomes
Question: 2447   The bacteria can cope with unfavourable conditions by producing
  1. Mesosomes
  2. Zygospores
  3. Endospores
  4. Cysts
Question: 2448   The comparison to Gram -positive bacteria ,the cell walls of Gram -negative bacteria have more lipid content and less
  1. Cocci
  2. Bcilli
  3. Spirilla
  4. Donor
Question: 2449   The cell membrane of a bacterial cell often invaginates to produce membranous structures referred to as
  1. Centrosomes
  2. Mesosomes
  3. Dictyosomes
  4. Polysomes
Question: 2450   Mitosis cannot take place bacteria because they lack --------
  1. Chromosomes
  2. Nucleus
  3. Centrosome
  4. Mesosomes
Question: 2451   Under the ideal environmental conditions bacterial cells divided at the rate of division per twenty
  1. Second
  2. Minutes
  3. Hours
  4. Days
Question: 2452   Lederberg and Tatum demonstrated conjugation in the bacteria
  1. 1944
  2. 1945
  3. 1946
  4. 1947
Question: 2453   Transduction in bacteria was discovered in 1952 by
  1. Tatum
  2. Griffith
  3. Zinder
  4. Mcleod

Answers to the questions of Biology on this page

Following list gives the correct choice for the answer of the Biology mcqs.
2440 . B       2441 . C       2443 . C       2444 . C       2446 . A       2447 . C       2448 . A       2449 . B       2450 . B       2451 . B       2452 . C       2453 . C      

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