All categories

3 years ago

Which pair of structures would provide a positive identification of a plant cell under a microscope?

Biology

1 answer:

inn [45]3 years ago

7 0

Answer:

Explanation:

If you look under a microscope it would be easy to see the cell wall and the chloroplast. in the picture that I put you can easily see the green which is the chloroplast and the cell wall which is the thin outer layer of the cell.

You might be interested in

How can scientists use the fossil record to find evidence of relationships between different species?

a_sh-v [17]

Using the fossil record, you can categorize species based on analogous or homologous structures

5 0

3 years ago

g If a person takes a prescribed dose of 10 milligrams of Valium, the amount of Valium in that person's bloodstream at any time

Elenna [48]

Answer:

a. 8.1 milligrams

b. 40.07 hours

c. 8.859 milligrams

Explanation:

If a person takes a prescribed dose of 10 milligrams of Valium, the amount of Valium in that person's bloodstream at any time can be modeled by

$A_{t}=10e^{-0.0173t}$

Where A(t) = amount of Valium remaining in the blood after t hours

t = time or duration after the drug is taken

a. we have to calculate the amount of drug remaining in the bloodstream after 12 hours

$A_{12}=10e^{-0.0173\times12}$

$A_{12}=10e^{-0.2076}$

= 10×0.81253

= 8.1 milligrams

b. In this part we have to calculate the time when A(t) = 5 milligrams

$5=10e^{-0.0173\timest}$

$\frac{5}{10}=e^{-0.0173t}$

0.5 = $e^{-0.0173t}$

Now we take natural log on both the sides of the equation.

ln(0.5) = ln( $e^{-0.0173t})$

-0.69314 = -0.0173t

t = $\frac{0.69314}{0.0173}$

t = 40.0658

≈ 40.07 hours

c. In this part we have to calculate the rate, by which amount of drug will decay in the bloodstream after 7 hours.

$A_{7}=10e^{-0.0173\times7}$

$A_{7}=10e^{-0.1211}$

= 10×0.8859

= 8.859 milligrams

6 0

3 years ago

How is the circulatory system and the water cycle similar?

uranmaximum [27]

Answer:

Water cycle, also called hydrologic cycle, cycle that involves the continuous circulation of water in the Earth-atmosphere system. Of the many processes involved in the water cycle, the most important are evaporation, transpiration, condensation, precipitation, and runoff.

Explanation:

8 0

3 years ago

Read 2 more answers

Quantitative research is often reported as

ICE Princess25 [194]

It's reported as statistic

4 0

3 years ago

What function is the first to be affected by alcohol?

krek1111 [17]

Answer: muscle control