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levacccp [35]
1 year ago
11

Can a pure culture containing a single type of microbe be prepared from a culture with a mixture of cells? explain your reasonin

g?
Biology
1 answer:
Arada [10]1 year ago
4 0

Pure culture can be prepared from a mixture of cultures by using the streak plate method. This enables the bacterial cells to be diluted to obtain a pure culture after many-folds dilution.

Pure culture is the one in which only one species, strain or clone of bacteria are grown. The pure culture enables to scientists to study in detail about its anatomy, lifestyle and potential uses or harms, without the interference of any other microbe.

Streak-plate method is the most commonly used technique in microbiology labs to isolate a single type of bacteria. It is performed by creating the smears of bacteria in zig-zag motion to dilute its concentration.

To know more about pure culture, here

brainly.com/question/21512552

#SPJ4

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Match these nutrients with their functions. (iodine, Vitamin D, Vitamin A, phosphorus, Vitamin E, Vitamin K, water, Vitamin B, c
Dafna1 [17]

Answer;(iodine, Vitamin D, Vitamin A, phosphorus, Vitamin E, Vitamin K, water, Vitamin B, calcium, Vitamin C, iron)

1. helps cells function normally ----vitamin E

2. needed by all cells, especially by red blood cells, to help carry oxygen ---iron

3. helps in forming blood cells, helps resist infection, helps prevent fatigue and aids in healing, prevents scurvy ----vitamin C

4. helps keep skin healthy, protects against night blindness, promotes healthy eyes -----vitamin A

5. used by the body to form bones and teeth, helps blood clot, helps muscles and nerves work normally ----calcium

6. keeps nervous system healthy, keeps appetite and digestion healthy, helps body chemistry to function normally ----vitamin B

7. helps blood to clot ----vitamin K

8. necessary to carry nutrients to cells and carry away waste products ----water

9. helps body use calcium and phosphorus to form strong bones ----vitamin D

10. similar to calcium; needed by all cells in small amounts to help them use other nutrients for energy ---phosphorus

11. helps control rate of metabolism of food ----Iodine

Explanation:

6 0
3 years ago
The portion of the membrane system In eukaryotic cells that is responsible for making liquids and breaking substance is the
Kisachek [45]
My answer is the Vacoules, but I might be wrong.
4 0
3 years ago
How can you tell from a food web which organisms will have the greatest biomass?
Zolol [24]

Answer:

<u><em>How can you tell from a food web which organisms will have the greatest biomass?</em></u>

The tropic level contains the greatest biomass in most ecosystems is producers. This occurs because producers get their energy from the sun, the sun is the most available resource, so there are the most at that level.

Explanation:

I hope that this answer has helped you to more thoroughly understand your question asked. If you have any further questions, please do not hesitate to ask them below.

Have a great rest of your day/night!

7 0
3 years ago
Question 3 (1 point)<br> SC<br> A product of unrestrained nuclear fission is the ________
fenix001 [56]
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3 0
3 years ago
HELP ASAPPP PLEASEEEEE
Kitty [74]

The birth rate was greater than the death rate and the immigration rate was greater than the emigration rate. Options B and D are correct.

<h3>Population growth</h3>

From the illustrated image, the world experienced an upward growth in population between 1950 and 2010.

In order for population growth to occur:

  • the birth rate must exceed the death rate
  • immigration must exceed emigration

Either or both of the above conditions will lead to a growth in the population.

Thus, options B and D are correct.

More on population growth can be found here: brainly.com/question/18415071

#SPJ1

8 0
2 years ago
Read 2 more answers
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