51
In prokaryote cells, the subunit RNA precursors are trimmed to form
A)
16 S and 22 S RNA
B)
16 S and 23 S RNA
C)
16 S and 24 S RNA
D)
5 S and 24 S RNA
Answer & Solution
Answer: Option
B
52
In each diploid set of chromosomes, two homologous chromosomes have additional 'constrictions' called
A)
Secondary contrictions-II
B)
Nucleolar organisers
C)
Satellites
D)
None of the above
Answer & Solution
Answer: Option
B
53
Which of the following organelle of a cell is involved in photosynthesis?
A)
Chloroplast
B)
Mitochondria
C)
Endoplasmic reticulum
D)
Golgi bodies
Answer & Solution
Answer: Option
A
54
The inner mitochondrial membrane and the matrix together constitute the
A)
Intercristae space
B)
Respiratory unit
C)
Subunit of Fernandez-Moran
D)
None of the above
Answer & Solution
Answer: Option
B
55
Smooth endoplasmic reticulum acts as a major site for the synthesis of
A)
lipids and steroids
B)
proteins
C)
ribosomes
D)
DNA
Answer & Solution
Answer: Option
A
56
The outer membrane of the nuclear envelope forms finger like processes which are pinched off into the cytoplasm. This process has been called
A)
Budding
B)
Blebbing
C)
Detoxification
D)
None of the above
Answer & Solution
Answer: Option
B
57
The process by which the termin chiasma slips off the ends of the chromosome and its position is taken up by an interstitial chiasma is called
A)
Relational coiling
B)
Terminalization
C)
Achiasmatic meiosis
D)
None of the above
Answer & Solution
Answer: Option
B
58
The only living component of a cell wall is
A)
middle lamellae
B)
pit pair
C)
secondary cell wall
D)
plasmodesmata
Answer & Solution
Answer: Option
D
59
The membranous sacs of the thylakoids consist of
A)
Protein membranes
B)
Cellulose membranes
C)
Lipoprotein membranes
D)
Lipid membranes
Answer & Solution
Answer: Option
C
60
Which one of the following groups of cellular organelles contains DNA?
A)
Mitochondria, nucleus, chloroplast
B)
Mitochondria, golgi bodies, nucleus
C)
Mitochondria, plasma membrane, nucleus
D)
Chloroplast, nucleus, ribosomes
Answer & Solution
Answer: Option
A
