1. Blood grouping
2. Mapping of genes
3. Mapping of nerve centers
4. Mapping of brain
Option “2” is correct. Gene mapping is the method used for determining the location of gene and relative distances between genes on a chromosome. The essence of all genome mapping is to place a collection of molecular markers onto their respective positions on the genome. Molecular markers come in all forms. Genes can be viewed as one special type of genetic markers in the construction of genome maps and mapped the same way as any other markers.
172. Read the following statements in connection with red blood corpuscles and with the help, the code given below find out the correct answer?
1. They have iron
2. They provide red colour to the blood
3. They provide immunity against certain diseases
4. They are the carrier of oxygen in the blood
Code:
1. 1, 2 and 3
2. 2, 3 and 4
3. 1, 2 and 4
4. 1, 2 3 and 4
Option “3” is correct. Red blood cells (RBCs) or red blood corpuscles also called erythrocytes are the most common type of blood cell and he vertebrate organism’s principal means of delivering oxygen (O_2) to the body tissues-via blood flow through the circulatory system. RBCs take up oxygen in the lungs or gills and release it into tissues while squeezing through the body’s capillaries. The cytoplasm of erythrocytes is rich in haemoglobin, an iron-containing biomolecule that can bind oxygen and is responsible for the red colour of the cells.
173. The major chemical compound found in human kidney stones is :
Option “3” is correct. Calcium Oxalate is a chemical compound that forms envelope shaped crystals, known in plants as raphides. A major constituent of human kidney stones is calcium oxalate.
174.Match List I with List II and select the correct answer from the code given below the Lists:
1. a
2. b
3. c
4. d
Option “1” is correct. Progesterone hormones are related to uterus and menstrual cycle of female. Testosterone is secreted by testis of male. Thyroxine is secreted by thyroid gland. Insulin is secreted by pancreas.
175.Match the following and select the correct answer from the codes given below-
1. a
2. b
3. c
4. d
Option “2” is correct. The deficiency of iodine causes goiter in which the neck becomes thicker. Anemia is caused by iron deficiency. Vitamin A & B are useful to prevent night blindness and beri-beri respectively.
Option “1” is correct. Ribo Nucleic Acid (RNA) is a polymeric molecule essential in various biological roles in coding, decoding, regulation, and expression of genes.
177. Which of the following are longest cells of human body?
Option “3” is correct. The longest cells in the human body are nerve cells. The longest cells in the human body are the nerve cells whose cell bodies are located in the base of spinal cord and whose axons run down to the ends of toes.
178. Which of the following bacteria is responsible for the formation of curd?
Option “3” is correct. Lacto-bacillus bacteria are responsible for the formation of curd.
179. How many pairs of ribs are there in human body?
1. 13
2. 11
3. 12
4. 14
Option “3” is correct. Ribs are the long curved bones which form the rib cage. They serve to protect the lungs, heart, and other internal organs. In humans there are normally 12 pairs of ribs.
