Answer:
The correct answer is 88.84 mmHg.
Explanation:
The pressure differential between the brain and the heart while standing up will be 120 - rho × g (gravity) × h, here h is the distance from the brain to the heart. The h is 40 cm or 0.4 m.
rho×g×h = 1060 kg/m³×9.8 m/s²×0.4m
= 4155 Pa
Now converting Pa to mmHg we get:
4155 Pa × 760 mmHg / 1.01325 × 10⁵ Pa
= 31.16 mmHg
Thus, the pressure in the brain now is 120 - 31.16
= 88.84 mmHg (hypotension)
<span>PCR is a relatively simple process because it only requires three cycles to produce enough of the desired DNA.
False
</span>
<span>While the cortex is the superficial outer layer of the kidney located underneath the capsule; the renal cortex is the most superficial part of the kidney. It is the outer region of the kidney between the renal capsule and the renal medulla where ultrafiltration occurs. Looking at the kidney, you'll observe that the renal cortex is a layer of tissue that contains tiny blood vessels, blood filters called nephrons, and collecting ducts that lead to the center region of the kidney. It contains a major portion or the nephrons and all cortical radiate arteries.</span>
<span>
Wind dispersion of reproductive cells allowed in seedplants to colonize
land away from water supplies. If water is needed to
passively transport gametes to each other and protect them from desiccation
plants were limited to densely inhabited space near water sources.
Bryophytes & ferns (seedless) are dependent on moist environments
for reproduction but the first seed plants developed an alternate
delivery system allowing independence from water- assisted reproduction.
Conifers produce pollen that can survive by carrying water and
nutrients along. Wind can now carry these male gametophytes to female
gametophytes under the scales of a cone. Fertilization produced a
diploid seed. The seed is protected and can survive dry conditions for a
period of time before growing. Pollen and seeds transferred a conifer’s
water dependence for their reproduction to wind dependence. </span>
Nuclear fusion, or fission i would say
