Consider the following statements about the human kidney: 1. It filters blood and forms urine. 2. It reabsorbs glucose in the collecting duct. 3. It secretes erythropoietin. Which of the above is/are correct? MCQ with Answer and Explanation
Consider the following statements about the human kidney:
1. It filters blood and forms urine.
2. It reabsorbs glucose in the collecting duct.
3. It secretes erythropoietin.
Which of the above is/are correct?
A. 1 and 3 only
B. 2 and 3 only
C. 1, 2, and 3
D. 1 and 2 only
Answer: Option A
Solution (By JKExamLibrary)
Kidneys filter blood (1) and produce erythropoietin (3). Glucose reabsorption occurs in the proximal tubule, not collecting duct. So 2 is incorrect.
Consider statements about human nutrition: 1. Proteins are made of amino acids. 2. Carbohydrates are made of fatty acids. 3. Fats are made of glycerol and fatty acids. Which are correct?
Explanation:
Proteins are complex macromolecules composed of long chains of amino acids linked by peptide bonds. Fats (triglycerides) are lipids composed of one glycerol molecule esterified to three fatty acid chains. Carbohydrates are composed of simple sugars (monosaccharides) like glucose, not fatty acids. Thus, statements 1 and 3 are correct, while statement 2 is false.
Consider the following statements about the nervous system:
1. Motor neurons carry impulses from the CNS to effectors.
2. Sensory neurons carry impulses from receptors to the CNS.
3. Interneurons are found only in the peripheral nervous system.
Which of the above is/are correct?
Explanation:
GMOs are organisms whose genetic material has been modified through recombinant DNA technology, introducing or deleting specific genes. Selective breeding and cross-pollination are traditional methods that do not directly manipulate DNA. Cloning produces genetically identical copies without necessarily altering the genome. Examples: Bt cotton, Golden rice.
No comments yet. Be the first to start the discussion!