Saturday, September 29, 2012

Cell biology - Cell division

1. Polyribosomes are aggregates of
a)Ribosomes and RNA    b)Only RNA   c)Peroxisomes   d)Several ribosomes held together by string of mRNA
2. Cytoplasm of one cell is continuous with that of the adjacent cell through
q)Plasmodesmata    b)Pits   c)Endoplasmic reticulum   d)Middle lamella
3. Nucleolus takes part in synthesis of
a)rRNA    b)tRNA   c)mRNA   d)DNA
4. Site for protein synthesis is
a)Pyrenoid    b)Chloroplast   c)Ribosome   d)Mitochondrion
5. Nucleus was discovered by
a)Purkinje    b)Nageli   c)Brown   d)Homeistet
6. Cell organelle covered by a single unit membrane is
a)Glyoxysome    b)Lysosome   c)Peroxisome   d)All the above
7. Enzymes associated with converting fats to carbohydrates are located in
a)Liposomes    b)Golgi bodies   c)Glyoxysomes   d)Microsomes
8. Secretory function of cell is carried out by
a)Peroxisomes    b)Golgi apparatus   c)Lysosomes   d)Sphaerosomes
9. Chromosomes present in prolonged prophase in the salivary glands of Drosophilla are
a)Polytene    b)Lampbrush   c)B-chromosomes   d)Supernumerary chromosomes
10. Best stage to observe shape, size and number of chromosomes is
a)Interphase    b)Metaphase   c)Prophase   d)Telophase
1d, 2a, 3a, 4c, 5c, 6d, 7c, 8b,9a, 10b

------------------------------------------ Best Wishes: Dr.Ehab Aboueladab, Tel:01007834123, ------------------------------------------
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