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Free download in PDF CBSE Class 11 Biology Objective Type Questions & Answers. Here Gkseries provide Biology Solve Questions and Answers for CBSE Class 11 Students.
(21)
virus that can reproduce without killing its host is called:
[A]
lytic virus
[B]
retroactive virus
[C]
temprate virus
[D]
virion
(22)
Under ideal condition a bacterial cell divides about every 20 minutes. It takes 200 minutes to fill a culture tube. How much time will it take to fill a test tube of double size.
[A]
400 minutes
[B]
220 minutes
[C]
240 minutes
[D]
300 minutes
(23)
In blue-green algae nitrogen fixation occurs in specialized cells called:
[A]
Harmogonia
[B]
Akinetes
[C]
Heterocysts
[D]
Zygospores
(24)
Inside photosynthetic bacteria, Chlorophyll is:
[A]
Localized in Chloroplast
[B]
Present inside Mitochondria
[C]
Dispersed in the cytoplasm
[D]
Absent
Answer: Dispersed in the cytoplasm
(25)
Amino acids are present in the cell wall of:
[A]
Bryophytes
[B]
Fungi
[C]
Bacteria
[D]
Gymnosperms
(26)
In lytic life cycle bacterial cell:
[A]
Continues its normal life processes
[B]
Bursts and dies
[C]
Starts division
[D]
Forms endospore
(27)
They fix atmospheric Nitrogen:
[A]
Virus
[B]
Fungi
[C]
Bacteria
[D]
Both A & B
(28)
Common cold is caused by:
[A]
Bacteria
[B]
Viruses
[C]
Fungi
[D]
Plasmodium
(29)
Viruses belong to the group:
[A]
Prokaryotes
[B]
Eukaryotes
[C]
Monera
[D]
None of these
(30)
They play a role in the making of dairy products:
[A]
Viruses
[B]
Bacteria
[C]
Algae
[D]
Plasmodium
31
Food can be preserved when pH of the medium is:
[A]
acidic
[B]
basic
[C]
neutral
[D]
none of these
32
Which of the following is caused by bacteria?
[A]
Tetanus
[B]
Measles
[C]
Malaria
[D]
Ringworm
33
DNA replication occurs in which phase of the cell cycle?
[A]
prophase
[B]
interphase
[C]
metaphase
[D]
Telophase
34
During mitosis the process of cytoplasmic division is called
[A]
Cytomeiosis
[B]
Cytoplasmosis
[C]
Cytokinesis
[D]
Cytomitosis
35
Which of these studied mitosis in animal cells?
[A]
Strassburger
[B]
Flemming
[C]
Sutton
[D]
Waldeyer
36
Which of these studied mitosis in plant cells?
[A]
Strassburger
[B]
Flemming
[C]
Sutton
[D]
Waldeyer
37
Which of the following number of molecules of various types of histones form Nucleosome?
[A]
8
[B]
20
[C]
16
[D]
10
38
DNA and histones together form a structure called
[A]
Centromeres
[B]
Nucleosome
[C]
Nucleoplasm
[D]
Centriole
39
The total chromosome complement of a cell is called
[A]
Karyosome
[B]
Karyokinesis
[C]
Karyogamy
[D]
Karyotype
40
Which of the following types of chromosomes have arms of equal length?
[A]
Metacentric
[B]
Telocentric
[C]
Acrocentric
[D]
None of these
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