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2 years ago

11

► List two reasons why fungi are classified in a different kingdom from plants.

1 answer:

faltersainse [42]2 years ago

5 0

Fungi is a bacteria because it is dependent

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What is 7.4 in it's simplest form?

Iteru [2.4K]

Assuming that you mean to ask <em>. . . "What is 7.4 </em><u><em>as a fraction</em></u><em> in simplest form</em>?"

7.4 = 7 and 4/10

4/10 can be reduced to 2/5

7 represents = (7*5)/5 = 35/5

so . . 7 + 4/10 = 35/5 + 2/5 = 37/5 (improper fraction in simplest form)
or
. . . . 7 + 4/10 = 7 2/5 (mixed fraction in simplest form)

4 0

2 years ago

Although these quantities vary from one type of cell to another, a cell can be 1.9 μm in diameter with a cell wall 60 nm thick.

DaniilM [7]

Answer: $2(10)^{-9} mg$

Explanation:

We know the total diameter of the cell (assumed spherical) is:

$d=1.9\mu m=1.9(10)^{-6} m$

Then its total radius $r=\frac{d}{2}=\frac{1.9(10)^{-6} m}{2}=9.5(10)^{-7} m$

On the other hand, we know the thickness of the cell wall is $r_{t}=60 nm= 60(10)^{-9} m$ and its density is the same as water ( $\rho=997 kg/m^{3}$ ).

Since density is the relation between the mass $m$ and the volume $V$ :

$\rho=\frac{m}{V}$

The mass is: $m=\rho V$ (1)

Now if we are talking about this cell as a thin spherical shell, its volume will be:

$V=\frac{4}{3}\pi R^{3}$ (2)

Where $R=r-r_{w}=9.5(10)^{-7} m - 60(10)^{-9} m$

Then:

$V=\frac{4}{3}\pi (9.5(10)^{-7} m - 60(10)^{-9} m)^{3}$ (3)

$V=2.952(10)^{-18} m^{3}$ (4)

Substituting (4) in (1):

$m=(997 kg/m^{3})(2.952(10)^{-18} m^{3})$ (5)

$m=2.94(10)^{-15} kg$ (6)

Knowing $1 kg=1000 g$ and $1 mg=0.001 g$ :

$m=2.94(10)^{-15} kg=2(10)^{-9} mg$

7 0

3 years ago

The objects shown in the following diagrams have different masses and are different distances apart. Which diagram shows the two

sergiy2304 [10]

Answer:

C. 10kg to 10kg

Explanation:

You have to picture to it I think

5 0

1 year ago

What form water has the greatest kinetic energy

Ray Of Light [21]

Answer:

Boiling water

Explanation:

Boiling water because it has the most rapid movement.

4 0

2 years ago

Match the cloud type with its description. 1. cumulus

Bond [772]

Answers

1. cumulus ⇒ b. look like pieces of cotton in the sky

2. altostratus ⇒ c. resembles an overcast sky; layers of gray or white clouds

3. cirrus ⇒ a. look like wispy feathers high in the sky

4. nimbostratus ⇒ E.dark, thick-layered clouds; rain's coming

5. fog ⇒ d. clouds nearest Earth's surface

7 0

2 years ago

Read 2 more answers