The organelle that contains enzymes for the glyoxylate cycle in plants is the: MCQ with Answer and Explanation

The organelle that contains enzymes for the glyoxylate cycle in plants is the:
A. Glyoxysome
B. Chloroplast
C. Mitochondria
D. Peroxisome
Answer: Option A
Solution (By JKSSB Mock Tests)
Glyoxysomes are specialized peroxisomes in oil-storing seeds that contain glyoxylate cycle enzymes, converting lipids to carbohydrates during germination.

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Practice More Biology Questions

Question #1
Who was the first scientist to view live sperm cells and bacteria under a microscope?
A. Robert Hooke
B. Robert Koch
C. Antonie van Leeuwenhoek
D. Louis Pasteur

Correct Answer: Option C


Explanation:
Antonie van Leeuwenhoek, using his hand-crafted single-lens microscopes, was the first to observe and describe living sperm cells, bacteria, protozoa, and red blood cells in the 1670s. Hooke saw dead cork cells, Pasteur and Koch later advanced microbiology with germ theory and pure culture techniques.

This question belongs to: Science Biology
Question #2
Consider statements about biotechnology: 1. Transgenic organisms contain foreign DNA. 2. Cloning produces genetically identical copies. 3. Gene therapy cures all genetic diseases. Which are correct?
A. 2 and 3 only
B. 1 and 3 only
C. 1 and 2 only
D. 1, 2 and 3

Correct Answer: Option C


Explanation:
Transgenic organisms (plants or animals) have been genetically modified to contain and express foreign DNA (a transgene) from another species. Cloning is a technique used to produce genetically identical copies of a biological entity, such as a cell, organism, or DNA sequence. Gene therapy is an emerging technique aimed at treating or curing genetic diseases by introducing functional genes, but it is still largely experimental and does not currently cure all genetic diseases. Thus, statements 1 and 2 are correct.

This question belongs to: Science Biology
Question #3
Which of the following is considered a direct ancestor of modern humans (Homo sapiens)?
A. Neanderthal man
B. Dryopithecus
C. Australopithecus
D. Ramapithecus

Correct Answer: Option C


Explanation:
Australopithecus (e.g., 'Lucy') is considered one of the earliest direct ancestors or a very close relative of the genus Homo. They were bipedal hominins who lived in Africa about 4 to 2 million years ago. Dryopithecus and Ramapithecus are earlier ape-like ancestors. Homo neanderthalensis was a close relative but is generally considered a separate species that went extinct, though some interbreeding occurred.

This question belongs to: Science Biology