AP BIOLOGY

THE CELL

CELL THEORY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In an organism, the brain directs the body how to respond to stimuli from the environment. In a cell, this function is performed by the-
A
cell membrane.
B
chloroplasts.
C
mitochondria.
D
nucleus.
Explanation: 

Detailed explanation-1: -By housing the cell’s genome, the nucleus serves both as the repository of genetic information and as the cell’s control center. DNA replication, transcription, and RNA processing all take place within the nucleus, with only the final stage of gene expression (translation) localized to the cytoplasm.

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. A membrane, a thin layer that allows chemicals to pass in and out to the rest of the cell, surrounds the nucleus.

Detailed explanation-3: -Nucleus. Known as the cell’s “command center, ” the nucleus is a large organelle that stores the cell’s DNA (deoxyribonucleic acid). The nucleus controls all of the cell’s activities, such as growth and metabolism, using the DNA’s genetic information.

Detailed explanation-4: -The nucleus, often considered the “brain” of the cell, contains the cell’s vast genome. The nucleus is primarily responsible for regulating gene expression, which in turn controls the instructions for protein synthesis.

There is 1 question to complete.