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Whitepunk [10]
3 years ago
9

HELP PLEASE!!! I NEED HELP!!!

Biology
1 answer:
jek_recluse [69]3 years ago
5 0
The answer is C hope this helps

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What must happen for a mutation to affect evolution?
lara31 [8.8K]

I found this in a website, “A mutation is a change in DNA, the hereditary material of life. ... So a change in an organism's DNA can cause changes in all aspects of its life. Mutations are essential to evolution; they are the raw material of genetic variation. Without mutation, evolution could not occur.”

Branliest please?

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Use the drop-down menus to complete each statement.
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Answer:

1. Bureau of Land Management

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3.US Forest Service

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Explanation:

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3 years ago
Which of the following scientists played a part in forming cell theory? (Choose all that apply)
DiKsa [7]

Answer:

theoder schwann and Rudolph Virchow

6 0
1 year ago
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A bacterial sample has a cell density of 1.85 x106 CFU/mL. What plate dilution should yield a countable plate? Which two dilutio
insens350 [35]

Answer:

Explanation:

Bacterial count in stock- 1.85x10^6 cfu/ml

Dilution methods

Take 100 uL or (0.1ml) from stock and add to 900ul (0.9ml) saline and mixed it- this makes 10^1dilution.

Now take 100ul from 10^1 dilution and add to next 900ul saline this is 10^2 dilution, similarly do upto 10^5 dilution.

Then take 100ul from 10^ 4 and 10^5 dilution seperately and plate on LB agar plate seperetely and count the colonies.

Cfu/ml formula= (No.of colonies x dilution factor)/0.1 ml

So suppose, 18 colonies formed on 10^4 dilution then total no. Of cells in stock will be 18x10^4/ 0.1= 18x10^5 cfu/ml.

If we dilute 10^4 or 10^5 that's leads to colony count of 18-19 colonies on 10^4 dilution while 2 colonies should come on plate of 10^5 dilution.

7 0
3 years ago
Explain why museums generally mount casts of dinosaur fossils for display, rather than the real specimens. Give three reasons, a
andriy [413]

Answer:

1. They keep casts to preserve the real fossils.

2. Maybe someone would steal a fossil and sell it on the dark web?

3. They keep casts to keep the real fossils in prime condition, by that I mean like undamaged.

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3 years ago
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