Biochemistry - Comprehensive Mock Test 3

Question 21 Easy

The second law of thermodynamics states that

A) The total entropy of a system and its surroundings always increases fora spontaneous process B) Energy can neither be created nor destroyed C) The total energy of a system and its surroundings is constant D) The total energy of a system and its surroundings is never constant

---

Solution Breakdown:

No Details

Question 22 Easy

The dielectric constant of water is

A) 80 B) 60 C) 40 D) 20

---

Solution Breakdown:

No Details

Question 23 Easy

Which is an essential amino acid

A) Serine B) Aspartic acid C) glycine D) Valine

---

Solution Breakdown:

No Details

Question 24 Easy

In double helix of DNA, the two DNA strands are

A) coiled around a common axis B) coiled around each other C) Not Coiled D) None of this

---

Solution Breakdown:

No Details

Question 25 Easy

The base pairs of DNA are correctly shown as

A) A = G and C = A B) A = C and A = G C) A = T and C = G D) A = G and C = T

---

Solution Breakdown:

No Details

Question 26 Easy

Alpha particles are _______

A) twice the mass of beta particles B) negatively charged C) just like helium nuclei D) lower in ionizing power as compared to gamma rays

---

Solution Breakdown:

No Details

Question 27 Medium

Chemical which causes bone cancer and degeneration of tissue is : ?

A) I-131 B) Ca-40 C) I-127 D) Str-90

---

Solution Breakdown:

No Details

Question 28 Hard

The average age of 30 number is 12. The average of the first 20 of them is 11 and that of the next 9 is 10.The last number is?

A) 60 B) 45 C) 40 D) 50

---

Solution Breakdown:

No Details

Question 29 Easy

Urea is decomposed by the species?

A) Micrococcus sps. B) Nitrosomonas sps. C) Proteus sps. D) Both a and c

---

Solution Breakdown:

No Details

Question 30 Easy

Parasitic form must contain?

A) Capsule B) Cell-wall C) Endospores D) Flagella

---

Solution Breakdown:

No Details