Prepare for NEET Biology Cell: The Unit of Life with MCQs & PYQs on NEET.GUIDE. Enjoy free practice, previous year questions, and expert solutions to understand cell structure and function.
Which organelle is known as the 'powerhouse' of the eukaryotic cell?
Mitochondria
Chloroplast
Nucleus
Ribosomes
The inner membrane of the mitochondria is highly folded. What is the purpose of these folds, called cristae?
Store genetic material
Facilitate protein synthesis
Increase surface area for ATP production
Regulate the passage of molecules
Which cell organelle is known as the 'powerhouse of the cell' because it generates most of the cell's supply of ATP?
Lysosomes
Ribosomes
Mitochondria
Golgi apparatus
Mitochondria and chloroplasts are known as semi-autonomous organelles. What key feature contributes to this semi-autonomy?
Presence of DNA and protein synthesizing machinery.
Presence of DNA but lack protein synthesizing machinery.
Absence of DNA but presence of protein synthesizing machinery.
Absence of both DNA and protein synthesizing machinery.
Which statement regarding the formation of mitochondria and chloroplasts is true?
They are formed de novo from nuclear DNA.
They arise spontaneously from the cytoplasm.
They are formed by division of pre-existing organelles.
They are synthesized by the endoplasmic reticulum.
Both mitochondria and chloroplasts contain their own DNA. This DNA is crucial for:
Controlling all cellular activities.
Synthesizing some of their own proteins.
Directing the synthesis of all cellular proteins.
Encoding all the genetic information of the cell.
Which of the following is NOT a characteristic of semi-autonomous organelles like mitochondria and chloroplasts?
Possession of their own DNA.
Ability to divide independently.
Complete independence from the nucleus.
Presence of ribosomes for protein synthesis.
Which organelle's membrane plays a crucial role in cellular respiration by housing the electron transport chain?
Lysosome
Golgi apparatus
Mitochondria
Endoplasmic reticulum
Given below are two statements:
Statement I: Mitochondria and chloroplasts are both double membrane-bound organelles.
Statement II: The inner membrane of mitochondria is relatively less permeable compared to the chloroplast.
In light of the above statements, choose the most appropriate answer from the options given below:
Both Statement I and Statement II are correct
Both Statement I and Statement II are incorrect
Statement I is correct but Statement II is incorrect
Statement I is incorrect but Statement II is correct
Which of the following statements is INCORRECT regarding the membranes of mitochondria and chloroplasts?
The outer membrane of both mitochondria and chloroplasts is highly permeable.
The inner membrane of chloroplasts forms the thylakoids.
The inner membrane of mitochondria is folded into cristae.
Both mitochondria and chloroplasts utilize an electron transport chain for ATP synthesis.
