Nokea
What are the macromolecules the genetic code is carried on?
- A. Nucleotides.
- B. RNA.
- C. Chromosomes.
- D. DNA
Correct Answer: D
Rationale:
You may also like to solve these questions
Which of the following epithelial types is correctly matched with its major function?
- A. Simple squamous epitheliumĀ"secretion or absorption
- B. Stratified squamous epitheliumĀ"changes shape when stretched
- C. Stratified squamous epitheliumĀ"diffusion
- D. Simple columnar epitheliumĀ"secretion or absorption
Correct Answer: D
Rationale: The correct answer is D - Simple columnar epitheliumĀ"secretion or absorption. Simple columnar epithelium is typically found in areas where secretion or absorption is the primary function, such as the lining of the intestines. This type of epithelium is composed of a single layer of tall, narrow cells that are well suited for these functions. Simple squamous epithelium is more associated with diffusion due to its thin structure allowing for easy movement of molecules through it. Stratified squamous epithelium is designed to protect underlying tissues and is not primarily involved in diffusion.
Which hormone stimulates milk production in the breasts during lactation?
- A. norepinephrine
- B. antidiuretic hormone
- C. prolactin
- D. oxytocin
Correct Answer: C
Rationale: Prolactin is the hormone responsible for stimulating milk production in the breasts during lactation. It is produced by the pituitary gland and plays a crucial role in the initiation and maintenance of lactation. While norepinephrine, antidiuretic hormone, and oxytocin have roles in various physiological processes, they do not directly stimulate milk production. Therefore, the correct answer is prolactin.
Anaerobic respiration can lead to a burning sensation caused by which molecule?
- A. Adenosine triphosphate (ATP).
- B. Lactic acid
- C. Creatine-phosphate.
- D. Adenosine diphosphate (ADP).
Correct Answer: B
Rationale:
What is the function of thrombocytes?
- A. Blood clotting
- B. Oxygen transport
- C. Immune response
- D. Hormone production
Correct Answer: A
Rationale: Thrombocytes, also known as platelets, play a crucial role in blood clotting. When there is an injury or damage to a blood vessel, thrombocytes adhere to the site and form a plug to stop bleeding. This process is essential for wound healing and preventing excessive blood loss. Therefore, the correct function of thrombocytes is blood clotting.
A man has a growth on his skin and a small sample needs to be removed and observed under a microscope. Which procedure will be used?
- A. Debridement
- B. Autopsy.
- C. Biopsy.
- D. Pap smear
Correct Answer: C
Rationale: