d. RNA 7 Which molecule will casily diffuse through the membrane c. DNA mino aci
ID: 275093 • Letter: D
Question
d. RNA 7 Which molecule will casily diffuse through the membrane c. DNA mino acids Hormones cells. In this transport which molecule is moved against its concentration gradient a) Na Glucose c. both molecules molecules go down their gradient 8) Symport transport of Na and glucose is important in glucose transport from gut to other 9) Proteins unfold to enter which of the following organelles nucleus mitochondria peroxisome All of the above 2+ 10) Sarcoplasmic reticulum contains pumps that are involved in transport of Ca", this is a form ATP-driven pump ight driven pump oupled pump one of the above 1DWhich of the following processes require GTP xport of nuclear import receptor through nuclear pores ssembly of clathrin-coated vesicles ransport of vesicles to membranes through docking Il of the above 12) Which of the following is an example of passive transporter? glucose-Na symport quaporins a pumps one of the above lycolipids obtain their suoar group in Golgi apparatus ER c. Cytosol d. Lysosome 14)Liposomes re site of lipid degradation re used in drug delivery re the site of lipid synthesis one of the aboveExplanation / Answer
7. a
Hormones are smaller molecules than amino acids, DNA and RNA. The hormones which have intracellular receptors diffuse easily across the membrane, These include glucocorticoids, thyroid hormone, retinoic acid, etc
8. b
Na-glucose symporter transports glucose against the concentration gradient and Na+ down the concentration gradient.
9. b
The mitochondrial proteins are unfolded prior to their transport and are then correctly folded within mitochondria by mitochondrial chaperones.
11. a
Ran GTPase plays important role in interaction of exportin and importin with nucleoporins.
12. b
Aquaporins mediate facilitated diffusion which is a channel mediated passive transport.
13. b
ER is the site for addition of sugars to glycolipids.
14. b
Liposomes are used fir liposome-mediated drug delivery.
16. c
In muscles lactate is formed due to fermentation which is then transported to liver.
17. c
Cholesterol is a hydrophobic molecule.
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