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otez555 [7]
3 years ago
14

What is an organelle?

Biology
1 answer:
harina [27]3 years ago
8 0

Answer:

any of a number of organized or specialized structures within a living cell.

Explanation:

yesaaaaaa

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D because this is the process of when the nitrogenous bases are going to match each other to form our DNA sequence
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What facts about DNA does the Watson-Crick model explain?
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I think it explains that the DNA molecules are double helix with alenine and thymine paired together

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(MIDDLE SCHOOL BIO)
katrin2010 [14]

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Chloroplast

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6 0
3 years ago
A grad student has a culture of E. coli with a total volume of 1,800 mL, and OD reading at 550 nm of 1.7. He transfers 1 mL cult
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Answer:

Explanation:

We'll represent the dilution as the volume transferred/total volume in the tube after transfer. So for the first dilution, 1 ml of culture was added into 9ml of broth bringing the total volume to 10 ml i.e 1/10

For the second dilution, 0.1 mL was added to 0.9mL of broth bringing the total volume to 1mL i.e 0.1/1.0 (this is also the same as 1/10). In relation to the stock culture, this is represented as 1/100 (that is 1/10 (first dilution) * 1/10 (second dilution)

Giving that the same was done for dilution 3 and 4,

third dilution is represented as: 1/10 and the fourth as 1/10 as well

In relation to the stock, dilution 3 is 1/1000

dilution 4 is 1/10000

a. the dilution in the third tube is \frac{1}{1000} = 10^{3 or 1.0*10^{3}

b. the dilution spread onto the agar plate is the fourth dilution, that is, \frac{1}{10000} = 10^{4} or 1.0*10^{4}

c. Since the grad student got 386CFU/0.2mL (200 uL = 0.2mL),

the cells in 1mL is: 386/0.2 = 1930 = 1.93 * 10^{3}

the cells in 1800mL is therefore 1930*1800 = 3,474,000 = 3.4*1010^{6}

3 0
2 years ago
Explain why society has been developing different renewable resources in favor of
Angelina_Jolie [31]

Answer: Society has been developing different renewable resources in favor of nonrenewable sources in the past decades because natural gas and oil has been used to much that we are running out of nonrenewable sources. So society has been trying to use solar panels, wind panels, and water.  

Explanation:

3 0
2 years ago
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