問題一覧
1
Pectinase digests which organelle part?
middle lamella
2
Resolution of naked eye is?
0.1 mm
3
Pectin is made of ____
200 galacturonic acid molecules
4
Pectic acids are a polymer of?
100 galacturnoic acid molecules
5
Which salts are present in gel form in the middle lamella
Calcium and Magnesium
6
Plasma membrane consists of:
Protiens 60%-80% and Lipids 20%-40%
7
How thick is the plasma membrane
7 nm
8
Is protoplasm bigger than cytoplasm?
Yes
9
Cholesterol prevents the entry of:
Polar molecules and Ions
10
_____ form the colloidal solution in cytoplasm.
Protein
11
Cytoplasm is made up of ___ water.
90%
12
Smooth ER in cells like skeletal muscle (which have more smooth ER) are called:
Sarcoplasmic Reticulum
13
Which of these play a role in the detoxification of drugs, venom and other poisonous substances:
Peroxisomes, Smooth ER
14
Which of the following are considered as ribonucleoproteins:
Ribosomes
15
Ribosomes are formed in:
Nucleolus
16
Prokaryotic ribosomes (70S) are found in which of the following organelles:
Mitochondria , Chloroplast
17
How are the subunits of ribosomes attached to each other?
Magnesium Ions, Forming salt bonds between RNA and amino acid.
18
Which of these should be higher in concentration in secretory cells:
Golgi Complex
19
Choose the correct options
Cis face of Golgi complex is Convex, Trans face of Golgi complex is Concave
20
Which of these are not present in prokaryotes
Cytoskeleton , Membrane bound Organelles
21
During autophagy the vessel around the unwanted organelle is derived from
Endoplasmic Reticulum
22
Tay-Sachs disease occurs due to the accumulation of which macromolecule
Lipids
23
Peroxisomes are named as such due to their role in formation and decomposition of
Hydrogen Peroxide
24
The Glyoxysomes found in all oil seed plants convert fatty acids to
Carbohydrates
25
Vacuole originate from
Endoplasmic reticulum, Golgi complex, Plasma membrane
26
The F0-F1 particles found in mitochondria are actually
ATP synthase
27
Proplastids divide and divide in which cells
Meristematic cells
28
Leucoplasts which store lipids are called
Elaioplasts
29
Which type of ribosome is present in the stroma of chloroplast?
Ribosome (70S)
30
How many Thylakoids are present in 1 Granum
20-25
31
How many Grana are found in 1 Chloroplasts
40-60
32
Light dependent reaction of photosynthesis occurs in which region of the chloroplast
Grana
33
Light independent reaction of photosynthesis occurs in which region of the chloroplast
Stroma
34
Are centriole present in prokaryotes?
No
35
Microfilaments are _____ in diameter
7 nm
36
Microtubules are _____ in diameter
25 nm
37
Intermediate filaments are _____ in diameter
8 to 10 nm
38
The basic protein sub unit of indermediate filament is
Vimentin
39
The basic sub unit of microtubules are
Tubulin
40
In muscle cells the microfilaments are called myofilaments. What is the thickness of the thick filament?
16 μm
41
How many doublet fibrils have to contract for effective stroke
5 / 9
42
How many doublet fibrils have to contract for recovery stroke
4 / 9
43
In which human cell does the nucleus not appear in the centre of the cell?
Muscle fibre cells
44
Which protein forms the site of attachment for microtubules during cell division?
Kinetochores