Biology

The name of the enzyme that catalyzes the conversion of glucose to glucose-6-phosphate at the beginning of glycolysis is?

A. phospho-fructokinase B. glucose isomerase C. hexokinase D. glucose-6-kinase Correct Answer: Option C C. hexokinase

6 years ago

Which of the following factors is likely to increase the rate of transpiration in plants?

A. A reduction in the number of stomata per unit surface area B. Increase in humidity around the leaves of…

6 years ago

Conduction of water and mineral salts through the xylem vessels is enhanced because the xylem cells are?

A. thickened with lignin B. long, narrow tubes placed end to end C. close to the endodermis D. centrally placed…

6 years ago

The process by which plants manufacture food from carbon dioxide and water using energy from the sun is called?

A. chemosynthesis B. photosynthesis C. anabolism D. catabolism Correct Answer: Option B photosynthesis

6 years ago

The resolution of a microscope refers to its power to?

A. increase an object's apparent size B. distinguish clearly between two objects C. scan the surface of an object D.…

6 years ago

Which of the following structures is not essential in a wind pollinated flower?

A. Anther B. Ovary C. Stigma D. Petal Correct Answer: Option D D. Petal

6 years ago

Which of the following conditions would result in a decrease in the production of antidiuretic hormone?

A. Abnormally high blood sugar level B. Drinking large quantities of water C. Increase in osmotic pressure of blood D.…

6 years ago

Which part of the nephron is associated with ultra-filtration?

A. Distal convoluted tubule B. Proximal convoluted tubule C. Collecting duct D. Bowman's capsule Correct Answer: Option D D. Bowman's…

6 years ago

The maintenance of a stable internal environment within the body of a mammal is known as?

A. osmosis B. plasmolysis C. homeostasis D. excretion Correct Answer: Option C C. homeostasis

6 years ago

In humans, excretion of hypertonic urine is associated with the?

A. distal convoluted tubule B. loop of Henle C. bowman's capsule D. proximal convoluted tubule Correct Answer: Option A A.…

6 years ago