Which enzyme in pancreatic juice is responsible for digesting proteins into peptides?
A. Nuclease
B. Pancreatic lipase
C. Pancreatic amylase
D. Trypsin
Answer: Option D
Solution (By JKExamLibrary)
Pancreatic juice contains inactive enzymes like trypsinogen, chymotrypsinogen, and procarboxypeptidase. When trypsinogen enters the small intestine, it is activated into trypsin by the enzyme enterokinase (secreted by the intestinal mucosa). Trypsin then digests proteins into smaller peptides. Pancreatic amylase digests carbohydrates, and lipase digests fats.
Consider the following statements about biodiversity:
1. Biodiversity includes genetic, species, and ecosystem diversity.
2. Hotspots are regions with high endemism and habitat loss.
3. The Western Ghats is a biodiversity hotspot.
Which of the above is/are correct?
Explanation:
Edward Jenner developed the first successful smallpox vaccine (1796). Pasteur invented pasteurization and rabies vaccine, not penicillin. Fleming discovered penicillin. Hooke coined the term 'cell' but did not discover bacteria; Leeuwenhoek observed bacteria. Thus, the correct match is Jenner - smallpox vaccine.
Explanation:
Rough endoplasmic reticulum is studded with ribosomes on its cytoplasmic surface, giving it a rough appearance. It is involved in protein synthesis and processing. Smooth ER lacks ribosomes and is for lipid synthesis.
No comments yet. Be the first to start the discussion!