The organelle that processes and packages proteins for secretion is the:
A. Lysosome
B. Ribosome
C. Golgi apparatus
D. Rough endoplasmic reticulum
Answer: Option C
Solution (By JKSSB Mock Tests)
The Golgi apparatus modifies, sorts, and packages proteins and lipids into vesicles for transport to their destinations (secretion, plasma membrane, lysosomes). Ribosomes synthesize proteins, rough ER folds and transports them, lysosomes digest materials.
Consider statements about human diseases: 1. Typhoid is caused by a bacterium. 2. Malaria is caused by a protozoan. 3. Dengue is caused by a virus. Which are correct?
Explanation:
Typhoid fever is a systemic bacterial infection caused by Salmonella enterica serotype Typhi, transmitted through contaminated food and water. Malaria is a life-threatening disease caused by protozoan parasites of the genus Plasmodium (like P. falciparum), transmitted by Anopheles mosquitoes. Dengue fever is a viral infection caused by the Dengue virus (a flavivirus), transmitted by Aedes mosquitoes. All three statements correctly identify the causative agents of these major diseases.
Explanation:
Salivary amylase (ptyalin) hydrolyzes starch into maltose and dextrins, initiating carbohydrate digestion. The reason explains the presence of amylase in saliva.
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