Explain the statement: “Cells are the basic units of structure and function in living things.”

1 answer:

6 0

All living things are made up of cells. Each cell's individual function helps the organism collectively function. They are the most basic as they can be self-contained. And there is no other particle smaller that can function on it's own.

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If f(x) = -x2+x-1 then value of f(f(2)) is

qaws [65]

Answer:

-13

Explanation:

Function

f(x) = -x² + x - 1

Solving

Substitute 2 in place of x
f(2) = -(2)² + 2 - 1
f(2) = -4 + 2 - 1
f(2) = -3
f(f(2)) = f(-3)
f(-3) = -(-3)² - 3 - 1
f(-3) = -9 - 3 - 1
f(f(2)) = -13

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2 years ago

What is an RC circuit?

cupoosta [38]

Is a circuit with both a resistor (R) and a capacitor (C). RC circuits are frequent element in electronic devices. They also play an important role in the transmission of electrical signals in nerve cells.

Hope this helps!

8 0

3 years ago

Use the drop-down menus to complete the statement.

Nikitich [7]

Classics.

Resistance is equal to relation between voltage and current.

$R = \frac{U}{I}$

If we express current:

$I = \frac{U}{R}$

If current is in fact 0 then one of the quantities either voltage or resistance must be equal to zero. Since resistance cannot be equal 0, because that would violate mathematical law that states that division by zero is undefined the only logical conclusion is voltage.

So the answer should be C voltage and B zero.

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3 years ago

Read 2 more answers

I need help on 6 7,8 and 9

pantera1 [17]

6. F- DNA
7. C
8. G
9. D
I believe these are correct, hope this helps.

7 0

3 years ago

If a rock has a density of 2g/cm³ and a volume of 8cm³, what is its mass?

Yakvenalex [24]

Density=mass÷volume
mass=density×volume
mass=2×8=16 g

3 0

3 years ago