★ Cellular and Sexual Reproduction Quiz
Micrograph in which the pairs of homologous chromosomes are arranged in decreasing size.
A. Gene
B. Gamete
C. Crossing Over
D. Karyotype
Select your answer:
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Respiratory › ViewDiffusion occurs when the exchange of gases between alveoli and the capillary bed.
A. TRUE
B. FALSE
Anatomy & Physiology: Respiratory › View
Oxygen enters the blood at the lungs because
A. The partial pressure of oxygen is higher in the blood than in the alveoli.
B. The partial pressure of oxygen is lower in the blood than in the alveoli.
C. Oxygen is attracted to the negative charges of plasma proteins.
D. Low blood pressure does not oppose oxygen movement.