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Jet001 [13]
3 years ago
7

Of all of the structures in a cell, which actually contains the cell's DNA? A. Mitochondria B. Cell membrane C. Nucleus D. Cytop

lasm​
Physics
2 answers:
ELEN [110]3 years ago
8 0
The nucleus is basically the heart of the cell holding genetic information
QveST [7]3 years ago
3 0

Answer:

C. Nucleus

Explanation:

The nucleus, formed by a nuclear membrane around a fluid nucleoplasm, is the control center of the cell. Threads of chromatin in the nucleus contain deoxyribonucleic acid (DNA), the genetic material of the cell.

have a good day and here’s a funny comic just for fun! :)

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3 years ago
The height of a cone is increasing at a rate of 10 cm/sec and its radius is decreasing so that its volume remains constant. How
ki77a [65]

Answer:

dr/dt = -2 cm/s.

Explanation:

The volume of a cone is given by:

V=\frac{1}{3} \pi r^{2}h (1)

  • r is the radius
  • h is the height

Let's take the derivative with respect to time in each side of (1).

\frac{dV}{dt}=\frac{1}{3} \pi \frac{d}{dt}(r^{2}h)=\frac{1}{3} \pi \left(2r\frac{dr}{dt}h+r^{2}\frac{dh}{dt} \right) (2)

We know that:

  • dh/dt = 10 cm / s (rate increasing of height)
  • dV/dt = 0 (constant volume means no variation with respect of time)
  • r = 4 cm
  • h = 10 cm

We can calculate how fast is the radius changing using the above information.

0=\frac{1}{3} \pi \left( 2\cdot 4\cdot \frac{dr}{dt} \cdot 10 + 4^{2}\cdot 10)\right  

Therefore dr/dt will be:

\frac{dr}{dt}=-\frac{160}{80}=-2 cm/s

The minus signs means that r is decreasing.

I hope it helps you!

6 0
3 years ago
If the number of particles is increased in a balloon what happens to the pressure inside of it?
Klio2033 [76]
The air pressure inside the balloon increases as the number of particles increases.
8 0
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i need some help getting started on an essay for physics. i decided on the topic of roller costers and dont know how to start it
marshall27 [118]

Explanation:

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What is one of the main differences between mitosis and meiosis
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