Nokea
Which structure regulates the transport of substances in and out of the cell?
- A. Cell membrane
- B. Cell's cytoplasm
- C. Nuclear membrane
- D. Plasma membrane
Correct Answer: D
Rationale: The plasma membrane, also known as the cell membrane, is responsible for regulating the transport of substances in and out of the cell. It acts as a selective barrier, allowing certain molecules to pass through while blocking others. The cytoplasm is the fluid within the cell, and the nuclear membrane surrounds the nucleus, not involved in regulating substance transport. Therefore, the correct answer is the plasma membrane.
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Which of the following are functions of the skeletal system? (Select the ONE that does not apply.)
- A. Supporting the body
- B. Hemopoiesis
- C. Conducting impulses
- D. Providing protection
Correct Answer: C
Rationale: The correct answer is C, 'Conducting impulses.' The skeletal system's primary functions include supporting the body to maintain posture and provide structure, facilitating movement, protecting internal organs, and producing blood cells through hemopoiesis. Conducting impulses is a function of the nervous system, not the skeletal system.
Where in the human body are most nutrients absorbed?
- A. Kidney.
- B. Large intestine.
- C. Lungs.
- D. Small Intestine.
Correct Answer: D
Rationale:
What are groups of similar cells called?
- A. Membrane
- B. System
- C. Organ
- D. Tissue
Correct Answer: D
Rationale: Groups of cells with similar structures and functions are called tissues. Tissues work together to perform specific functions in the body, such as muscle contraction, nerve signal transmission, and forming protective barriers. Examples of tissues include muscle tissue, nerve tissue, and epithelial tissue.
When assessing a female patient who describes herself as a strict vegetarian, the nurse notes that she has a yellow tone to her skin. The nurse should ask the client if she has eaten large amounts of which foods?
- A. Carrots and squash.
- B. Turnips and beets.
- C. Rice and eggs.
- D. Spinach and mustard greens.
Correct Answer: A
Rationale:
What are macromolecules that carry the genetic code made of?
- A. Nucleotides
- B. Chromosomes
- C. DNA
- D. RNA
Correct Answer: A
Rationale: Macromolecules carrying the genetic code are made of nucleotides. Nucleotides serve as the building blocks of DNA and RNA, which are responsible for storing and transmitting genetic information. While chromosomes are composed of DNA and proteins, they do not directly carry the genetic code. DNA and RNA are indeed composed of nucleotides, but they are not the carriers of the genetic code themselves.