Focus on biology to score well in upcoming tests

Hyderabad: The study of life, living organisms, life cycles of various species of organisms, and the environments they live in – these broadly come under the biological sciences. Here are some sample questions to help you understand the basics of biology. 1. Match the Column-I with Column-II & choose the correct option       […]

Hyderabad: The study of life, living organisms, life cycles of various species of organisms, and the environments they live in – these broadly come under the biological sciences.

Here are some sample questions to help you understand the basics of biology.

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1. Match the Column-I with Column-II & choose the correct option
                         Column-I                                                 Column-II
A. Synapsis aligns homologous chromosomes             i. Anaphase-II
B. Synthesis of RNA & Protein                                         ii. Zygotene
C. Action of enzyme recombinase                                   iii. G2-Phase
D. Centromere do not separate but chromatids          iv. Anaphase-I
move towards opposite poles                                          v. Pachytene
a. A-ii B-i C-iii D-iv
b. A-ii B-iii C-v D-iv
c. A-i B-ii C-v D-iv
d. A-ii B-iii C-iv D-v
Ans: b

2. Fructose is absorbed into the blood through mucosa cells of intestine by the process called
a. Active transport
b. Simple diffusion
c. Facilitated transport
d. Co-transport mechanism
Ans: d

3. Match the Column-I with Column-II & Column-III. Choose the correct option
  Column-I                  Column-II           Column-III
(Substrate)                (Enzyme)             (Product)
1. Lactose                        A. Lipas                 i. Galactose
2. Monoglycerides        B. Trypsin             ii. Maltose
3. Starch                         C. Lactase             iii. Fatty acids
4. Peptones                   D. Amylase            iv. Dipeptides
Answer codes:
a. 1-A-i, 2-C-ii 3-B-iii 4-D-iv
b. 1-D-i 2-A-ii 3-B-iii 4-C-iv
c. 1-C-i 2-A-iii 3-D-ii 4-B-iv
d. 1-C-i 2-A-ii 3-D-iii 4-B-iv
Ans: c

4. Chylomicrons are:
a. Neural signals that stimulate intestinal secretions
b. Small fat globules coated with protein
c. Small granules found in gastric juice
d. Protein molecules coated with fat
Ans: b

5. What is the PO2 & PCO2 in the systemic arteries?
a. PO2 40mm Hg, PCO2 45 mm Hg
b. PO2 95mm Hg, PCO2 104 mm Hg
c. PO2 95mm Hg, PCO2 40 mm Hg
d. PO2 45mm Hg, PCO2 40 mm Hg
Ans: c

6. Choose the wrong statement.
a. Solubility of CO2 in blood is 20-25 times higher than that of O2
b. The total volume of air accommodated in the lungs at the end of a forced inspiration is called the vital capacity
c. O2 can bind with haemoglobin in a reversible manner to form oxyhaemoglobin
d. Every 100ml of deoxygenated blood delivers approximately 4ml of CO2 to the alveoli
Ans: b

7. Match the items listed under Column-I with those given under Column-II. Choose the appropriate option from the given choices:
Column-I                                                           Column-II
A. Residual Volume (RV)                                 p. 4000ml – 4600ml
B. Inspiratory Reserve Volume (IRV)           q. 1100ml – 1200ml
C. Vital Capacity (VC)                                       r. 1000ml – 1100ml
D. Expiratory Reserve Volume (ERV)           s. 3000ml – 3500ml
E. Inspiratory capacity (IC)                             t. 2500ml – 3000ml
    A    B    C    D    E
a.  t     q     s     r      p
b. q     r     s     t       p
c.  q    t      p     r      s
d.  r    t      p     q     s
Ans: c

8. When you hold your breath, which of the following gas changes in the blood would first lead to the urge to breathe?
a. Falling O2 concentration
b. Raising CO2 concentration
c. Falling CO2 concentration
d. Raising CO2 connection & falling O2 concentration
Ans: b

To be continued..