Nokea
Where is the apical side of an epithelial cell located?
- A. Is exposed to fluid or air
- B. Is on the top side of the cell
- C. Does not allow any substances to pass through
- D. None of the above
Correct Answer: B
Rationale: The apical side of an epithelial cell refers to the top surface of the cell that is exposed to the external environment, such as fluid or air. This surface is specialized to perform specific functions like absorption, secretion, or protection. The apical side faces the lumen or external environment and is crucial for the cell's interactions with its surroundings. Therefore, the correct answer is that the apical side of an epithelial cell is on the top side of the cell.
You may also like to solve these questions
What type of tissue is fat composed of?
- A. Connective
- B. Muscle
- C. Nervous
- D. Epithelial
Correct Answer: A
Rationale: The correct answer is A: Connective tissue. Fat tissue, also known as adipose tissue, is a type of connective tissue that stores energy in the form of fat. It provides insulation and serves as a reserve of energy. Muscle tissue (choice B) is responsible for movement, nervous tissue (choice C) transmits electrical signals throughout the body, and epithelial tissue (choice D) covers and protects body surfaces.
What type of bond in the base of the DNA nucleotides holds the strands together?
- A. Hydrogen.
- B. Sodium chloride.
- C. Copper.
- D. Potassium bromide.
Correct Answer: A
Rationale:
Which term means a group of similar cells combined to perform a common function?
- A. Tissue
- B. Organism
- C. System
- D. Organ
Correct Answer: A
Rationale: The correct answer is 'Tissue.' Tissue is a group of similar cells that work collectively to carry out a specific function. These specialized cells combine to form tissues, which further combine to create organs. Organs then collaborate within systems in the body to maintain balance (homeostasis) and perform various functions such as digestion, circulation, and respiration.
Which cell organelle functions to transport materials from the endoplasmic reticulum throughout the cell?
- A. Ribosome
- B. Golgi apparatus
- C. Lysosome
- D. Vacuole
Correct Answer: B
Rationale: The correct answer is B, Golgi apparatus. The Golgi apparatus plays a crucial role in modifying, sorting, and packaging proteins and lipids that it receives from the endoplasmic reticulum. After processing these materials, the Golgi apparatus transports them to other parts of the cell or outside the cell. It acts as a distribution center within the cell, ensuring that different molecules reach their correct destinations for various cellular functions.
Which DNA strand would complement this segment: ACTTGCA?
- A. TGAACGT
- B. GACCATG
- C. ACTTGCA
- D. None of the above
Correct Answer: A
Rationale: To find the complementary DNA strand, you need to pair each nucleotide with its complementary base: A with T, C with G, T with A, and G with C. Therefore, the correct match for ACTTGCA is TGAACGT. Only Choice A follows this complementary base pairing rule, making it the correct answer.