cells Flashcards
the nuclear envelope is a derivative of
RER
in germinating seeds, fatty acids are degraded exclusively in the
glyoxysomes
the telomeres of eukaryatic chromosomes consist of short sequences of
guanine rich repeats
colchine is an inhibitory chemical which
prevents the spindle formation in mitosis
names of schleiden and schwaan are associated w
cell theory 1839
experiments on acetabularia by hammering proved the role of
nucleus in heredity
involved exchanging rhizoid and stalk
ribosomes were discovered by
palade 1955
23 mm / 230 A diameter
diameter of microtubules
24 nm
what are intermediate filaments made of and diameter
10 nm
keratin in nails
form the cytoskeleton
diameter of microfilaments
3-6 nm
diameter of ribosomes
150- 250 Armstrongs
at what Mg conc do two ribsomal subunit join
0.001 M
conc increases 10 times to form a dimer
when does duplication of 1 pair of centrioles occur in cell cycle?
G2 phase
how many chromosomes do mice have
40
how many chormosomes do corn have
20
how many chromsomes do sugarcane have
80
how many chromosomes do frogs have
26
peripheral vs central part of the cell
gel : peripheral
sol : center
steroid hormones are synthesized by which organized by which organelle
SER
which of the following is involved in the conversion of fats to carbs by oxidation of fats
glyoxisomes
mag power of electron microscope compared to eye is
250,000
the human eye could differentiate object which r how far apart?
1 mm
size of eukayotic cell
10-100 nm
opt ph of arginase
9.7
opt ph of pancreatic enzyme
9
opt ph of catalase
7.6
opt ph of chymtrypsin
7-8
