Chapter 17, Problem 6STP

Solution

Introduction:

Cells are the basic structural and functional unit of life. They are the building blocks of all living things. They provide structure for the body, take in nutrients from food, transform those nutrients into energy, and carry out specific functions.

Correct answer:

Option (A)

Explanation correct answer:

Option (A): 1 denotes the nucleus. The Nucleus assists the cell as a command center, send directions to the cell to grow, mature, divide, or die. It also houses DNA (deoxyribonucleic acid), the cell’s genetic material. The nucleus is enclosed by a membrane called the nuclear envelope, which guards the DNA and separates the nucleus from the rest of the cell. The labeled structure that contains a cell’s genetic information is the nucleus.

Explanation incorrect answer:

Option (B): 2 denote ribosomes. Ribosomes are cell organelles that process the cell’s genetic instructions to form proteins. These organelles can float easily in the cytoplasm or be associated to the endoplasmic reticulum.

Option (C): 3 denote Golgi apparatus. The Golgi apparatus packages molecules processed by the endoplasmic reticulum to be transported out of the cell.

Option (D): 4 denote mitochondria. Mitochondria are complex organelles that transform energy from food into a form that the cell can consume. They have their own genetic material, separate and isolated from the DNA in the nucleus, and can make replicas of themselves.