1. Catabolic pathways result in _______________ of the molecules.
A. assembly
B. functionalization
C. conformation
D. disassembly
Answer: Option D
Explanation: Catabolism refers to the disassembly of complex molecules to form simpler products. Catabolism hence serves two roles: providing raw materials for synthesis of products and making chemical energy available for survival of a cell.
2. Energy released by catabolic pathways is stored in how many forms?
Answer: Option B
Explanation: Explanation: Energy released by catabolic pathways is stored primarily in two forms: high energy phosphates like adenosine triphosphate and high energy electrons (NADPH).
3. The TCA cycle occurs in which region of a prokaryotic cell?
A. cytosol
B. mitochondria
C. ribsomes
D. golgi complex
Answer: Option A
Explanation: There are two stages in the catabolism of glucose namely glycolysis which occurs in the cytosol and tricarboxylic acid (TCA) cycle which occurs in the cytosol of prokaryotes and mitochondria of eukaryotes.
4. Who proposed that plant embryo arose from a single cell?
A. Matthias Schleiden
B. Theodor Schwann
C. Robert Hooke
D. Pasteur
Answer: Option A
Explanation: In 1838, German lawyer turned botanist Matthias Schleiden, proposed that plants were made of cells and that plant embryo arose from a single cell. Theodor Schwann, his colleague later proposed the cell theory.
5. Which cells are found in the intestinal lining?
A. Neurons
B. Epithelial cells
C. Hepatocytes
D. RBCs
Answer: Option B
Explanation: Epithelial cells line the intestine and are responsible for the uptake and absorption of nutrients from the digestive tract. Microvilli are located at the apical end of these cells and mitochondria are located at the basal end.