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sammy [17]
3 years ago
7

Science help pls, thankssssssss

Biology
1 answer:
Dmitrij [34]3 years ago
7 0

Answer:

2:b

3:a

4:c

5:a

I hope this helps.

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Explain why the tetraphenylcyclopentadienone is in deep purple color? Explain why the tetraphenylcyclopentadienone is in deep pu
NikAS [45]
<span>Tetraphenylcyclopentadienone has five conjugated aromatic rings. Its structure suggests that it is highly conjugated. With this structure, it absorbs the energy from wavelengths of colors other than violet and reflects the energy from violet wavelengths.</span>
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3 years ago
The ____________ functions as a gateway through which chemicals and small particles, such as ____________ enter or leave the cel
Vilka [71]

Answer: cell membrane

such as water, micro-organism

physical process

simple diffusion, osmosis and filtration

such as potasssium permaganate in water,urea a liver waste diffuses from the body and the kidney help in filtering it out

physiological processs

active transport, phagocytosis and pinocytosis

such as soduim-potassium pump, exocytosis

Explanation:  transportation in and out of cell is done in different ways listed above but a barrier to this movement is the cell membrane which is an outer covering of the cell. it protect the cell and only some materials can penetrate the cell membrane e.g micro-organism, water e.t.c. the various physical and physiological processes are the various ways substance  cna be liquid, solid or gas are transported within or outside the  cell e.g food

6 0
3 years ago
How many generations does it take for a single bacterial cell to become 256?
Brut [27]
Yur answer is 8 hope it helped
7 0
3 years ago
A scientist is examining the function of macromolecules in a cell. She notices that movement of large molecules into and out of
Kipish [7]

Answer:

 She notices that movement of large molecules into and out of the cell is ... and out of the cell is disrupted when she damages one specific type of macromolecule. ... The macromolecule which has she most likely damaged would be a protein.

6 0
3 years ago
a cell is placed in a solution of 3% starch and 3% glucose. After several hours, glucose is detected outside of the cell, but st
Alex17521 [72]

Answer and Explanation:

The cell was placed in a hypertonic solution. Glucose is a monosaccharide while starch is a polysaccharide. The concentration on the outside is higher compared to that on the inside. The cells have cell membrane that is semi-permeable.

Movement of molecules is dependent on the concentation gradient. However, the size of molecules determine the diffusion rate. Small and light molecules diffuse faster than large and heavy molecules thus glucose diffused faster than starch.

The cell membrane being permeable suggested that it allows molecules of small sizes to pass but not large ones.

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3 years ago
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