GENERAL HISTOLOGY

INTRODUCTION

CELL STRUCTURE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the function of the nucleus?
A
Controls all cell activities
B
Controls most cell activities
C
Controls absolutely no cell activities
D
Allows substances to enter and leave the cell
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: -Nucleus-The control center of the cell that directs all of the cell activities. Genetic material is contained inside. Usually found in center of cell. Nuclear Membrane-The outside boundary of the nucleus that controls what enters and exits the nucleus.

Detailed explanation-3: -Nucleus: The nucleus is the most important organelle of the cell which controls all the cellular activity. It contains the genetic material in the form of DNA which is protected by the nuclear envelope.

Detailed explanation-4: -The nucleus has 2 primary functions: It is responsible for storing the cell’s hereditary material or the DNA. It is responsible for coordinating many of the important cellular activities such as protein synthesis, cell division, growth and a host of other important functions.

Detailed explanation-5: -DNA controls all of the cellular activities by turning the genes “on” or “off.” The other type of nucleic acid, RNA, is mostly involved in protein synthesis. The DNA molecules never leave the nucleus but instead use an intermediary to communicate with the rest of the cell. This intermediary is the messenger RNA (mRNA).

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