NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL STRUCTURE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Control center ; contains DNA; appeared purple under the microscope
A
Nucleus
B
Mitochondria
C
Cell Membrane
D
Vacuole
Explanation: 

Detailed explanation-1: -The small darkly staining granules are chromatin (chromosomes). The larger dark purple structure is the nucleolus.

Detailed explanation-2: -The nucleus is like the remote control center of the cell. It acts as the cell’s brain by telling it what to do, how to grow, and when to reproduce. The nucleus is home to the cell’s genes.

Detailed explanation-3: -EM 007 Nucleus Exists in two forms: Heterochromatin (dark blue)-condensed chromatin that is transcriptionally inactive (intensely stained) Euchromatin (light blue)-dispersed regions of unpacked chromatin that is often actively transcribed (lightly stained)

Detailed explanation-4: -Nucleus-The nucleus is the control center of the cell. It is the largest organelle in the cell and it contains the DNA of the cell. DNA (Deoxyribonucleic Acid) contains all the information for cells to live, perform their functions and reproduce. Inside the nucleus is another organelle called the nucleolus.

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