Which of the following is the most important role of meiosis in sexual reproduction?
A) It reduces the size of the gametes.
B) It ensures that each daughter cell doubles the number of chromosomes.
C) It changes the genetic composition of each chromosome.
D) It prevents the chromosome number from doubling in each generation.
E) It produces at least one gamete that is mobile.
D
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Migration of cancerous cells through the lymphatic system to other regions of the body is called ______________
Fill in the blank with correct word.
The structures labeled F are the
A) mitochondria.
B) sarcomeres.
C) nuclei.
D) centrioles.
E) troponin molecules.
A person has a condition in which the eye's lens loses flexibility and transparency, making it more difficult for light to pass through the clouded lens. For which health problem should this person receive care?
A. Blepharitis B. Cataract C. Clouding D. Astigmatism
Hyperventilation can result in _______
A) respiratory acidosis B) too much carbon dioxide in the blood C) too little carbon dioxide in the blood D) too much oxygen in the blood