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3 years ago

Explain why DNA is called a molecular clock.

1 answer:

5 0

The molecular clock is a figurative term for a technique that uses the mutation rate of biomolecules to deduce the time in prehistory when two or more life forms diverged. The biomolecular data used for such calculations are usually nucleotide sequences for DNA or amino acid sequences for proteins.

Explanation:

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An ecology student noticed that Big Moose Lake has a higher nitrogen level than Brant Lake, but has lower algae growth. This dat

egoroff_w [7]

Explanation:

A student of ecology researched about the low growth of algae in the Big Moose lake as compared to the Brant lake, though Big Moose lake has higher level of nitrogen and nutrients in it.

Nitrogen and phosphorous are an important element for the growth of algae in water bodies but in presence of pollutants in the water bodies and low oxygen content, the algae grows in slower rate. Besides, slower growth of algae may also affected by the acid rain that happens near Moose lake, which is harmful for algae growth due ti the presence of sulphur.

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3 years ago

In what parts of the cycle do you think phosphorus spends the most time

disa [49]

Answer:

what is a phosphorus

Explanation:

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3 years ago

A tall pea plant (TT) is crossbred with a short pea plant (tt). The Punnett square below shows the separated alleles for two pea

musickatia [10]

Hi there!

Using the image below, you can see that all of the boxes are Tt, or heterozygous. Therefore, 1 = Tt, 2 = Tt, 3 = Tt, and 4 = Tt.

Hope this helps!! :)
If there's anything else that I can help you with, please let me know!

6 0

3 years ago

Read 2 more answers

Explain the results from trial 1 in which all of the conditions proposed by oparin and haldane were met in the miller-urey appar

kolezko [41]

<h2>Modern Abiogenesis Hypothesis</h2>

Explanation:

American physicists Harold Urey and Stanley Miller consolidated warm water with water fume, methane, smelling salts, and atomic hydrogen. These beat with electrical releases. These parts were intended to recreate the crude sea, prebiotic air, warmth, and lighting
After seven days they found that basic natural atoms, for example, amino acids had framed
Hence the Miller-Urey try effectively delivered atoms from inorganic parts thought to have been available on the prebiotic earth
Hence, the right answer is "Modern abiogenesis hypothesis is based on Oparin- Haldane theory and Miller- Urey experiment"

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3 years ago

An acidic solution of pH 5 has<br> TIMES as many hydrogen ions (H+) as does a solution of pH 6.

Artyom0805 [142]

The difference in concentration of hydrogen Ions between pH5 and pH6 is - x 10.

The pH scale is a scale or measure to find the strength of acidity or the basic nature of a solution or substance. pH 1 is acidic and pH 14 is the most basic on the scale.

The concentration of hydrogen ions is inversely related to its pH
More hydrogen ions present, the lower the pH
The fewer hydrogen ions, the higher the pH We know,

pH = -log(H+) then,

=> 5 = -log (H+)

=> H+ = $10^{-5}$ (for pH = 5)

=> pH = -log(H+)

=> 6 = -log (H+)

=> H+ = $10^{-6}$ (for pH = 6)

Thus, The substance with the lower pH (5) has 10 times as many hydrogen ions per volume of water.

Learn more about the pH scale:

brainly.com/question/1596421

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3 years ago