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3 years ago

Help ......me please asap

Biology

2 answers:

rewona [7]3 years ago

3 0

it is luster because lustrous is how shiny it is.

<span>~ thank you for letting me answer your question here on brainly! much love from england xx</span>

DaniilM [7]3 years ago

3 0

Luster is the answer. You can read about it in articles

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Patterns of Process of Evolution. Check my work please.

Morgarella [4.7K]

The clade which is most likely to survive a series of catastrophic events over time is D. a clade with many distantly related and diverse species.
This is because this will ensure they survive given that they are so different, yet closely related.

4 0

3 years ago

All cells are small in size. Which of the following is the smallest cell?

topjm [15]

Answer:

Mycoplasma

Explanation:

Mycoplasma is the smallest cell

4 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

Naily [24]

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*10 $10^{6}$

3 0

3 years ago

Organism that need to eat to get nutrients

ss7ja [257]

Plants and other autotrophs absorb nutrients from soil and water. Autotrophs are organisms that can make their own food. The most important nutrients they need are carbon, hydrogen, and oxygen. Other nutrients needed by plants are nitrogen, phosphorous, potassium, calcium, magnesium, and sulfur.

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3 years ago

Birdsongs are both innate and learned. however, young birds must hear an adult male sing the species song. why?

fenix001 [56]

The reason for that is the song gets imprinted on the young birds. Have in mind that birds rised alone will sing but the local pattern will not influence the singing of that bird. So if the birds listen an adult male sing they will help the young ones to get their singing as they will serve as the closest reference. Still have in mind that young birds that are alone can also sing but in a different way, not the one proposed by the environment.

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3 years ago

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