Year :
1980
Title :
Biology
Exam :
JAMB Exam
Paper 1 | Objectives
21 - 30 of 50 Questions
| # | Question | Ans |
|---|---|---|
| 21. |
The part of the cell solely responsible for respiration is the A. nucleus B. nucleolus C. mitochondria D. golgi apparatus E. endoplasmic reticulum |
C |
| 22. |
In anaerobic respiration, glucose is converted to one of the following A. Carbon dioxide and water B. Carbon dioxide only C. Carbon dioxide and alcohol D. Alcohol and water E. water and acetic acid |
C |
| 23. |
During excretion of urea there is also a corresponding re-absorption of water into the blood. This re-absorption takes place in the A. uriniferous tubules B. Bowman's capsule C. glomerulus D. malpighian capsule E. renal artery Detailed SolutionThe uriniferous tubules refer to each of the long, fine, convoluted tubules conveying urine from the glomeruli to the renal pelvis in the vertebrate kidney. Water and salts are reabsorbed into the blood along their length. |
|
| 24. |
If the bark and phloem tissue of a woody shoot are peeled off by ringing, the whole plant will die eventually die because? A. water does not reach the leaves B. water and salts remained below the ring portion C. there is a withdrawal of water from the root by soil D. manufactured food does not reach the roots E. the roots store too much water |
D |
| 25. |
The filament of spirogyra were put into equal volumes of sugar solutions X and Y. After 5 minutes, filaments from solution X had their cells contents rounded up while those from Y were unaffected. The experiment shows that A. solution X was stronger than Y B. solution Y was stronger than X C. Spirogyra used up the sugar in solution X D. solution X is good for stimulating sexual reproduction in Spirogyra E. solution Y was less contaminated than X Detailed Solution- osmosis is the movement of water molecules from a solution with a high concentration of water molecules to a solution with a lower concentration of water molecules, through a cell's partially permeable membrane.- |
|
| 26. |
Which part of the human brain is concerned with reflexes controlling the rate of heart beat and breathing? A. Medulla B. Cerebrum C. Cerebellum D. Pineal body E. Olfactory lobe |
A |
| 27. |
Which of the following hormones is produced during fright or when agitated? A. Insulin B. Adrenalin C. Thyroxine D. Pituitrin E. Progesterone |
B |
| 28. |
The following are connected with the movement of a reflex action (1) Central nervous (2) Muscles (3) Skin (4) Sensory nerve (5) Motor nerve. Which of the following sequences indicates a correct path? A. 1-2-3-4-5 B. 2-1-4-5-3 C. 3-4-1-2-5 D. 4-1-5-2-3 E. 3-4-1-5-2 |
E |
| 29. |
Biconcave lenses are used in the correction of an eye defect called? A. myopia B. colour blindnes C. old age D. hypermetropia E. weakening of ciliary muscles Detailed SolutionConcave Lenses Are for the Nearsighted, Convex for the Farsighted.Concave lenses are used in eyeglasses that correct nearsightedness. |
|
| 30. |
The center which controls respiratory activities the mammalian brain is the A. cerebrum B. olfactory lobe C. pituitary organ D. cerebellum E. medulla |
E |
| 21. |
The part of the cell solely responsible for respiration is the A. nucleus B. nucleolus C. mitochondria D. golgi apparatus E. endoplasmic reticulum |
C |
| 22. |
In anaerobic respiration, glucose is converted to one of the following A. Carbon dioxide and water B. Carbon dioxide only C. Carbon dioxide and alcohol D. Alcohol and water E. water and acetic acid |
C |
| 23. |
During excretion of urea there is also a corresponding re-absorption of water into the blood. This re-absorption takes place in the A. uriniferous tubules B. Bowman's capsule C. glomerulus D. malpighian capsule E. renal artery Detailed SolutionThe uriniferous tubules refer to each of the long, fine, convoluted tubules conveying urine from the glomeruli to the renal pelvis in the vertebrate kidney. Water and salts are reabsorbed into the blood along their length. |
|
| 24. |
If the bark and phloem tissue of a woody shoot are peeled off by ringing, the whole plant will die eventually die because? A. water does not reach the leaves B. water and salts remained below the ring portion C. there is a withdrawal of water from the root by soil D. manufactured food does not reach the roots E. the roots store too much water |
D |
| 25. |
The filament of spirogyra were put into equal volumes of sugar solutions X and Y. After 5 minutes, filaments from solution X had their cells contents rounded up while those from Y were unaffected. The experiment shows that A. solution X was stronger than Y B. solution Y was stronger than X C. Spirogyra used up the sugar in solution X D. solution X is good for stimulating sexual reproduction in Spirogyra E. solution Y was less contaminated than X Detailed Solution- osmosis is the movement of water molecules from a solution with a high concentration of water molecules to a solution with a lower concentration of water molecules, through a cell's partially permeable membrane.- |
| 26. |
Which part of the human brain is concerned with reflexes controlling the rate of heart beat and breathing? A. Medulla B. Cerebrum C. Cerebellum D. Pineal body E. Olfactory lobe |
A |
| 27. |
Which of the following hormones is produced during fright or when agitated? A. Insulin B. Adrenalin C. Thyroxine D. Pituitrin E. Progesterone |
B |
| 28. |
The following are connected with the movement of a reflex action (1) Central nervous (2) Muscles (3) Skin (4) Sensory nerve (5) Motor nerve. Which of the following sequences indicates a correct path? A. 1-2-3-4-5 B. 2-1-4-5-3 C. 3-4-1-2-5 D. 4-1-5-2-3 E. 3-4-1-5-2 |
E |
| 29. |
Biconcave lenses are used in the correction of an eye defect called? A. myopia B. colour blindnes C. old age D. hypermetropia E. weakening of ciliary muscles Detailed SolutionConcave Lenses Are for the Nearsighted, Convex for the Farsighted.Concave lenses are used in eyeglasses that correct nearsightedness. |
|
| 30. |
The center which controls respiratory activities the mammalian brain is the A. cerebrum B. olfactory lobe C. pituitary organ D. cerebellum E. medulla |
E |