The structure through which gases are exchanged between the atmosphere and the blood is the:

Question 20 options:

diaphragm

alveolus

thymus

esophagus

trachea

What does resonance result in? quieter sounds frequency amplitude louder sounds

Fan egg cell containing the (n+1) number of chromosomes combines with a sperm cell containing the (n) number of chromosomes, what is the result of this union? a) all future somatic cells of the organism will contain the (2n + 1) number of chromosomes. b) all future somatic cells of the organism will contain the (2n - 1) number of chromosomes. c) only certain somatic cells of the organism will contain the (2n + 1) number of chromosomes. d) all future somatic cells of the organism will contain the normal diploid number of chromosomes.

Cells are adapted to preform specific functions. which of the following terms refers to this capability?