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ehidna [41]
2 years ago
14

Define and distinguish between diffusion and omosis​

Biology
1 answer:
Dmitry [639]2 years ago
5 0

Diffusion is the spontaneous movement of substances from a region of high concentration to a region of low concentration.

Osmosis is the passage of water molecules from a high water concentration region through a selectively permeable membrane to a low water concentration region.

In diffusion, selectively permeable membrane is neither required nor involved while in osmosis, it is involved.

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hoa [83]

The nucleus controls what happens within the cell

5 0
3 years ago
Read 2 more answers
7. What is the kinetic energy of a 3-kilogram ball that is rolling at 2 meters per second?
nydimaria [60]
Kinetic energy = 0.5*M*V^2 

 Q7-
 
0.5*3*(2^2)= 6J

Q8a- 

0.5*2*(2^2)= 4J
0.5*4*(3^2)=18J 
the second ball has more kinetic energy.

Q8b-

at the max height, all the kinetic energy is converted to potential energy, 

gravitational potential energy is = M*g*h

that theory would apply if you wanted to work out the maximum height achieved if the balls were thrown upward by rearranging. But, we are simply working out which ball will have more potential energy so:

First ball:
2kg*9.81(g)*10m = 196.2J

Second ball
4kg*9.81*10m= 392.4J

The second ball has more potential energy 


5 0
3 years ago
The act of clapping your hands out in front of you with your elbows fully extended is achieved by contracting the __________ mus
slavikrds [6]

The act of clapping your hands out in front of you with your elbows fully extended is achieved by contracting the pectoralis major muscles.

The pectoralis major muscle is a thick, large fan-shaped muscle that is located in the chest area of the human body. The pectoralis major is the most superficial muscle in the chest area and its functions is associated with the movement and rotation of the shoulder joint. Body movements such as extending the arm across the front part of the body, lowering the arm to the back part of the body, and rotating the upper arm in an inward manner are achieved by the pectoralis major muscles.


7 0
3 years ago
Help me will give brainiest <br> please and thank you
Romashka [77]
Your answer is Archea bacteria

Let me know is you got it correct
8 0
3 years ago
Predict what will happen to interest rates and output if a stock market crash causes autonomous consumer expenditure to fall
sineoko [7]

Answer:

Lower interest rates.

Explanation:

if a stock market crashes, the interest rates will also be lowered because they have a direct relationship between stock market and interest rates. When the stock market performs very good, the interest rates will be higher while on the other hand, if a stock market crashes, the interest rates will be lower so we can conclude that the interest rates will be lower if stock market crashes.

7 0
3 years ago
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