The chromosomes in which centromere is situated close to one end are

1. metacentric 2. acrocentric
3. telocentric 4. sub-metacentric
Subtopic:  Nucleus |
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The biosynthesis of ribosomal RNA occurs in:

1. Ribosomes 2. Golgi apparatus
3. Microbodies 4. Nucleolus
Subtopic:  Nucleus |
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Match List - I with List - II

 List -I  List -II
(a) Cristae (i) Primary constriction in chromosome
(b) Thylakoids (ii) Disc-shaped sacs in Golgi apparatus
(c) Centromere (iii) Infoldings in mitochondria
(d) Cisternae (iv) Flattened membranous sacs in stroma of plastids

Choose the correct answer from the options given below.

(a) (b) (c) (d)
1. (iii) (iv) (i) (ii)
2. (ii) (iii) (iv) (i)
3. (iv) (iii) (ii) (i)
4. (i) (iv) (iii) (ii)
Subtopic:  Mitochondria | Golgi Apparatus | Nucleus | Vacuole |
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Which of the following is an incorrect statement?

1. The perinuclear space forms a barrier between the materials present inside the nucleus and that of the cytoplasm.
2. Nuclear pores act as passages for proteins and RNA molecules in both directions between nucleus and cytoplasm.
3. Mature sieve tube elements possess a conspicuous nucleus and usual cytoplasmic organelles.
4. Microbodies are present both in plant and animal cells.
Subtopic:  Nucleus |
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The largest structures passed through the nuclear pores are:

1. rDNA 2. Lamin proteins
3. mRNA 4. Ribosome subunits
Subtopic:  Nucleus | Ribosome and Inclusion Bodies |
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