Which cells of the male reproductive system are haploid and round and have a central nucleus and a large amount of cytoplasm?
Early spermatid
Spermatogonium
Late spermatid
Primary spermatocyte
The Correct Answer is A
A. Early spermatid: Early spermatids are haploid cells, round in shape, and have a central nucleus with a significant amount of cytoplasm.
B. Spermatogonium: Spermatogonia are diploid cells found in the basal layer of the seminiferous tubules and are not haploid.
C. Late spermatid: Late spermatids are more elongated and less round as they are close to maturing into sperm.
D. Primary spermatocyte: Primary spermatocytes are diploid cells that undergo meiosis to produce haploid spermatids.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Marrow: The hollow spaces within long bones contain bone marrow, which is responsible for the production of blood cells.
B. Natural killer cells: Natural killer cells are a type of lymphocyte found in the bloodstream and tissues but not directly within the hollow spaces of bones.
C. Enzymes: Enzymes are not found specifically in the hollow spaces of long bones; they are present throughout the body and are involved in metabolic processes.
D. Plasma cells: Plasma cells are derived from B cells and are primarily located in lymphatic tissue and bone marrow but do not fill the hollow spaces of long bones.
Correct Answer is D
Explanation
A. Carbon dioxide diffuses out of the blood: This describes external respiration in the lungs.
B. Oxygen binds with the hemoglobin: This happens in the lungs during external respiration.
C. Carbon dioxide dissociates from the hemoglobin: This occurs during external respiration when carbon dioxide is released into the lungs.
D. Oxygen diffuses out of the blood: Internal respiration refers to the exchange of gases between the blood and tissues, where oxygen diffuses out of the blood into the tissues for cellular use.
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