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3 years ago

What is the answer to the question above?

Biology

1 answer:

UkoKoshka [18]3 years ago

4 0

The answer is D

Remember: smaller cells typically have a higher surface area- to-volume ratio, which are more efficient at exchanging material with the environment.

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We will experience this in our sleep if we are deprived of REM sleep

hjlf

Answer:

Hmm.

Explanation:

Chronic sleep deprivation has been linked to a greater risk of obesity, Type 2 Diabetes, dementia, depression, cardiovascular disease, and cancer. There has also been research to show that insufficient REM sleep may cause migraines.

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4 years ago

How are groundwater supplies initially impacted during a drought

frozen [14]

Answer:

Explanation:

At the start of a drought, groundwater may not be noticeably lower (not B). Only aquifers near the ocean may become contaminated with salt water (not C). And it is definitely not D.

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2 years ago

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What is the total number of ATP produced by cellular respiration?

il63 [147K]

38 ATP is produced during cellular respiration

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4 years ago

An owl has good night vision because its eyes can detect a light intensity as small as 5.0 × 10-13 W/m2. What is the minimum num

Lady bird [3.3K]

Answer:

Thus, the minimum number of photons per second is 77.34

Explanation:

Light intensity, $I_{min}$ = $5\times 10^{-13} W/m^{2}$

Pupil has a diameter, d = 8.5 mm

= 8.5 x $10^{-3}$ m

Radius of the eye, r = 4.25 x $10^{-3}$ m

∴ Area of the eye, A = $\pi .r^{2}$

= $3.14\times \left ( 4.25\times 10^{-3} \right )^{2}$

= $5.6\times 10^{-5} m^{2}$

Let $P_{min}$ be the minimum number of photons.

Therefore, $P_{min}$ = $I_{min}$ x A

= $5\times 10^{-13}$ x $5.6\times 10^{-5}$

= $2.8\times 10^{-17}$ W

Thus the minimum number of photons is given by

$N_{min}=P_{min}/E$

where E = $hc/\lambda$

= $\left (6.63\times 10^{-34}\times 3\times 10^{8} \right )/548\times 10^{-9}$

= $3.62\times 10^{-19} J$

Therefore, $N_{min}$ = $\frac{2.8\times 10^{-17}}{3.62\times 10^{-19}}$

= 77.34 photons per second

Thus, the minimum number of photons per second is 77.34

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3 years ago

On average, those with the short form of the ____ transporter gene and a history of stressful experiences reported more than ave

astraxan [27]

Answer:

serotonin

Explanation:

Here is the complete question:. on average, those with the short form of the ________ transporter gene and a history of stressful experiences reported more than average symptoms of depression.

Serotonin is sometimes called the happy chemical, because it contributes to wellbeing and happiness. The scientific name for serotonin is 5-hydroxytryptamine, or 5-HT.

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4 years ago

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