Biology MCQ thread..!!

[Fauziya]

Skin for grafting can now be made by culturing living skin cells removed from a human patient. Tissue formed in this way is delicate and difficult to handle, though it can be strengthened by the incorporation of an additional material.
Which of the following would be the most suitable for reinforcing this mammalian tissue ?
a. albumen
b. collagen
c. fibrin
d. glycogen

is it B collagen?

 

[Fauziya]

Which two structures when hydrolysed would release amino acids ?
a. protein channel and phospholipid.
b. lipid and carbohydrate chain.
c. protein channel and protein molecule.
d. carbohydrate chain and protein molecule.

i think this is C. both r proteins

 

[arsimme]

ya even i think its collagen but i dont know the correct answer

 

[reekx94]

Skin for grafting can now be made by culturing living skin cells removed from a human patient. Tissue formed in this way is delicate and difficult to handle, though it can be strengthened by the incorporation of an additional material.
Which of the following would be the most suitable for reinforcing this mammalian tissue ?
a. albumen
b. collagen
c. fibrin
d. glycogen

is it B collagen?

collagen, it has high tensile strength

 

[Fauziya]

An enzyme hydrolyses the two heavy polypeptide chains of an antibody molecule. The hydrolysis occurs at the hinge region and breaks the antibody into three fragments.
How many of these fragments are able to bind to antigen?
A 0 B 1 C 2 D 3

ans. is C 2...
how three fragments occur?

 

[Otaiba13]

What determines the rate of water movement from the roots to the leaves?
A absorption of water through the root hair cells
B development of a less negative water potential in the leaves
C diffusion of water through the stomata
D evaporation of water from the mesophyll cell walls

y is it only D i mean A B and C are correct too

 

[kirashinagami]

thread closed :Bravo:

 

[sweetiepie]

lol...

 

[Fearless Knight]

they

 

[Shaykh Subhan Gul]

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