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vovangra [49]
3 years ago
13

How many hours of sleep do you really need?

Biology
1 answer:
otez555 [7]3 years ago
3 0
According to the National Heart, Lung, and Blood Institute, adults need around seven to eight hours. For teenagers they recommend nine to ten, and at least ten for children.
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How do different properties of waves affect sound and light?
harkovskaia [24]
The greater the force that produces a wave, the greater the amplitude of the wave and the greater the energy carried by the wave. In a transverse wave the higher the wave, the higher the amplitude. Sounds with greater amplitude will be louder; light with greater amplitude will be brighter
6 0
3 years ago
Compare and contrast the reasons cell division is important for unicellular and multicellular organisms. 2. Provide an example o
Ganezh [65]

(1)

For unicellular organisms, cell division is important for the reproduction of the population, Unicellular organism mainly use cell division, also called binary fission, for pollution growth. This is because unicellular organisms are only composed of one cell.

Multicellular organisms use cell division for growth and reproduction. Cell division causes increase in the number of cells composing the organism hence its growth in size. Cell division is also used to create gametes that are used in reproduction by fertilization.

(2)

Even in fully developed organisms, cell division is important in tissue repair. In tissue homeostasis, there is a balanced rate of cell division and cell death .  An example in muscles. Due to the stress experienced by muscle cells, they usually have a lower life span and therefore the damaged cells are often replaced with new ones by cell division. This prevents tissue wastage.

(3)

Growth factors signal the growth of a cell. They usually bind receptors on the cell surface and indicate how the cell should grow and divide base don environmental stimuli. An example is during regular exercises. Growth factors indicate that the muscle cells should divide regularly and grow bigger to accommodate the higher stress in the muscles from the workout. This is how your muscles grow bigger and stronger with more exercise.  

(4)

Differentiation of cells occurs through the silencing of some gene allowing the cell to produce particular proteins (and other biomolecules) that align with its functions in the body. This especially critical in multicellular organisms.  An example is that while al the cells in your body have the same DNA, some cells differentiate into liver cells while others into lungs, stomach, heart, and etcetera.  

Learn More:

For more on cell division check out;

brainly.com/question/4365207

brainly.com/question/11266913

#LearnWithBrainly

6 0
3 years ago
What do flagella and cilia have in common?
Fudgin [204]

D. They both help organisms to move.

4 0
3 years ago
Imagine a species of butterfly that comes in in a variety of colors
Aleksandr [31]
What is the question here? There’s multiple answers
7 0
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Mountain climbing. Proteins are thermodynamically unstable. The DG of the hydrolysis of proteins is quite negative, yet proteins
Yuri [45]

Answer:

Depending the hydrolysis .

Explanation:

Okay its negative but at what percent ?

4 0
3 years ago
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