Ribosome are produced in ______________.
nucleolus
cytoplasm
mitochondria
Golgi body
In an animal cell, protein synthesis takes place _____________.
only on the ribosomes present in cytosol
only on ribosomes attached to nuclear enveloped and ER
on ribosomes present in the nucleolus as well as in cytoplasm
on ribosomes preseent in the cytosol as well as in the mitochondria
Number of chromotids at metaphase is _____________.
two each in mitosis and meiosis
two in mitosis and one in meiosis
two in mitosis and four in meiosis
One in mitosis and two in meiosis
Organelle having flattened membrane bound cisternae and lying near the nucleus is _______________.
plasmid
Golgi apparatus
lomasome
Hammerling's experiments of Acetabularia invovled exchanging _______________.
nucleus
rhizoid and stalk
gametes
Golgi apparatuss is absent in _____________.
higher plants
yeast
bacteria and blue green algae
None of the above
The exchange of genetic material between chromatids of paired homologous chromosomes during first meiotic division is called _______________.
transformation
chiasmata
crossing over
synapsis
Lampbrush chromosomes occur during _____________.
prophase of mitosis
deplotene of meiosis
metaphase of meiosis
interphase
Which the following organ has single membrane?
Nucleus
Cellwall
Mitochondria
Sphherosome
In the somatic cell cycle _____________.
in G1 phase DNA content is double the amount ofDNA present in the original cell
DNA replication takes place in S phase
a short interphase is follwoed by a long mitotic phase
G2 phase follows mitotic phase
