The pH of blood if pco2 drops to 35.0 mmHg is 7.459
The pH of the blood can be calculated using the Henderson- Hasselbalch equation, which explains the relationship between acid dissociation constant pKa and pH in biological and chemical systems.
pH = pK + log ( HCO3- / ( 0.03 * PCO2 ) )
pK is 6.1 for the bicarbonate buffer system.
HCO3- = 24mm
PCO2 = 35.0 mmhg
pH = 6.1 + log ( 24 / 0.03 * 35.0 )
= 6.1 + log ( 24 / 1.05 )
= 6.1 + log 22.8571
= 6.1 + 1.3590
= 7.459
Hence, the pH of blood is 7.459
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The correct answer is option (D) eccrine sweat glands.
Eccrine sweat glands are the major sweat glands found abundantly on the skin especially in palms, soles, head. They are involved in the secretion of a clear, sterile, odourless substance called the sweat. They are involved in the process of thermoregulation which is the ability of an organism to maintain a particular temperature irrespective of any temperature or changes in the environment.
During a hot day or intense exercise, the body temperature is maintained by the stimulation of the eccrine sweat glands by the nervous system to secrete water onto the surface of the body which gives a cooling effect by evaporation. Thus, the production of the eccrine sweat acts as a mechanism for temperature control.
Answer:
Metaphase
Explanation:
The metaphase stage of the cell cycle precedes the anaphase and the telophase stages. During this stage, the metaphase plate is formed and chromosomes align along this plate which also represents the equator of the cell.
After lining up, mitotic spindles attach to each chromosome at the centromere. Shortening of the spindles results in separation of sister chromatids of the same chromosome and their eventual migration to the opposite poles of the cell.
<em>Hence, if the mitotic spindle refuses to attach to chromosomes, cells would most likely be arrested in the metaphase stage and will never be able to proceed beyond it.</em>
Answer:
Down Syndrome
Explanation:
It is caused by 3 copies of chromosome 21
