<span>The true statement regarding DNA is A) contains deoxyribose sugar. DNA (deoxyribonucleic acid) consists of two strands of nucleotides joined by hydrogen bonds. Each nucleotide contains nucleobase (adenine, thymine, cytosine, and guanine), a sugar deoxyribose, and a phosphate group. The fact that it contains the deoxyribose sugar was the reason the molecule is called deoxyribonucleic acid or DNA.</span>
Diffusion is the spontaneous movement of gases, without the use of any energy or effort by the body, between the gas in the alveoli and the blood in the capillaries in the lungs. Perfusion is the process by which the cardiovascular system pumps blood throughout the lungs.
Answer: Hyperventilation syndrome
Carbon dioxide or CO2 is acid, so if the level of CO2 inside the blood decreased it will cause the blood become more alkaline. Carbon dioxide dumped when a person exhale, so if the rate of breathing increase it will reduce the CO2 level. Increased rate of breathing could be found in hyperventilation syndrome or panic attack.