bio mcq....?

[hassam]

34 Which disease is least likely to be passed directly from parent to child?
A cholera
B HIV/AIDS
C malaria
D sickle cell anaemia

 

[hassam]

35 For which disease is vaccination the most successful method of prevention?
A cholera
B HIV / AIDS
C TB
D malaria

 

[hassam]

7 What is the theoretical number of chemically different dipeptides that may be assembled from 12
different types of amino acids?
A 24 B 72 C 144 D 400

 

[XPFMember]

Assalamoalaikum!!!!


I dont know the first one...others are here!! although i took help from markscheme

34 Which disease is least likely to be passed directly from parent to child?
A cholera
B HIV/AIDS
C malaria
D sickle cell anaemia

• It's C
  Malaria is not passed directly from parent to child because it requires an intermediate host.

35 For which disease is vaccination the most successful method of prevention?
A cholera
B HIV / AIDS
C TB
D malaria

• 
  It's C...If u see the Summary of Infectious Disease chapter in Mary Jones...for the other 3 diseases it's clearly mentioned that there is no effective vaccine :!: However there's a vaccine for TB

7 What is the theoretical number of chemically different dipeptides that may be assembled from 12
different types of amino acids?
A 24
B 72
C 144
D 400

• It's C
  see there are 12 different amino acids
  how i wud have imagined this if u draw a table...just as we have the inheritance diagram or the proteins...so we'll have 12 columns and 12 rows...so in a total 12 x 12 pairs can be made...which is equal to 144

Hope this helps!

 

[XPFMember]

btw if u get to know the first question do let me know too