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BartSMP [9]
3 years ago
9

Cells grown in laboratory culture dishes undergo only a fixed number of division before dying. The number of possible divisions

drops depending on the age of the donor organism. This phenomenon is called the
Biology
1 answer:
Alex787 [66]3 years ago
8 0

Answer:

Hayflick limit

Explanation:

The Hayflick limit, or Hayflick phenomenon, is the number of times a normal human cell population will divide before cell division stops. It was postulated by Leonard Hayflick in 1961,

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Using the idea of concentration gradient explain why the purple colour of potassium permaganate gradually spreads throughout the
NNADVOKAT [17]

The purple color of potassium permanganate gradually spreads throughout the water in the jar by the process of diffusion.

  • Diffusion is the process of movement of a substance from the region of higher concentration to the regions of lower concentration. Diffusion occurs in liquids as well as gases.
  • Potassium permanganate is a purple color compound, when it is added in a jar of water it spreads throughout the water by the virtue of diffusion.
  • The concentration of potassium permanganate is higher at one point and the other regions in the jar have its nil or low concentrations initially, this leads to the set up of a concentration gradient.
  • As time passes diffusion occurs and the particles of potassium permanganate keep on migrating to the regions of low concentration until the concentration is uniform throughout the jar. Ultimately, it spread throughout the jar making the water purple.

Know more about diffusion

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3 0
2 years ago
Which of the following industries can produce hazardous wastes?
bogdanovich [222]
I think d all of the above
5 0
3 years ago
A cross of a white horse(WW) and a red horse (RR) produces all Roan (RW) offspring. This type of inheritance is called:
BartSMP [9]
Answer d
multiple alleles
8 0
2 years ago
Read 2 more answers
What molecule is created during photosynthesis?
just olya [345]

Answer:

C. Glucose

Explanation:

Water and Carbon Dioxide are reactants in photosynthesis, while chlorophyll allows plants to absorb light in the process. Glucose is the product in photosynthesis.

3 0
2 years ago
By controlling what enters and leaves a cell, the cell membrane A. aids in maintaining homeostasis within the cell. B. aids in m
Levart [38]
By controlling what enters and leaves a cell, the cell membrane A) aids in maintaining homeostasis within the cell. Homeostasis is the process by which organisms maintain life through eating, growing, and living in variable conditions. It would not make sense to answer B) because organisms do not control the homeostasis of their external environment. D) also would not be correct because cell's do not control osmosis in the external environment. The membrane does not control osmosis because osmosis is generally a random process of molecular diffusion whereas the membrane acts in a conscious and controlled way. 
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3 years ago
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