Which one of the following is a single membrane structure?

⇦

⇨

Which one of the following is a single membrane structure?

Options

(a) lysosomes
(b) chloroplast
(c) mitochondria
(d) nucleus

Correct Answer:

lysosomes

Explanation:

A lysosome is a tiny sac bounded by a single unit membrane of lipoprotein discovered by de Dube (1995). It contains a dense, finely granular fluid. The latter consists of glycoprotein hydrolytic (digestive) enzymes called acid hydrolases. These include proteases, lipases, nucleases, glycosidases, sulphatases, acid phosphatases, etc. However, all the enzymes do not occur in the same lysosomes. The lysosome enzymes do not occur in the same lysosome. There are different sets of enzymes in different lysosomes. The lysosome enzymes can break down all major biological macromolecules present in the cells or entering the cells from outside into their building block subunits by addition of water. So these are digestive in nature. The lysosome enzymes are active in acid medium, at about pH 5, hence their name. It is also called suicidal bag.

Related Questions:

1. Canal joining middle ear with buccal cavity is
2. Which of the following stores fats and essential oils
3. Which one of the following phyla is correctly matched with its two general
4. Serum is
5. In angiosperms, functional megaspore develops into

Topics: Cell Structure and Functions (413)
Subject: Biology (4253)

---

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

---

Share this page with your friends