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Lana71 [14]
3 years ago
5

Which forms the basis of taxonomy in the twenty-first century?

Biology
1 answer:
erastova [34]3 years ago
8 0
Phylogenetic  relationships 1018
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18
Sloan [31]

Answer:

Divergent boundary

Explanation:

5 0
2 years ago
Describe three observations an astronaut might make while viewing Russia at night.(Site 1)
olga55 [171]
<span>One observation would be the physical size of Russia compared to other countries, despite a lack of visible borders from space. In addition, part of Russia's outline would likely be obscured by the various clouds and objects in the stratosphere; this would allow the astronaut to view potential cloud and weather patterns on earth. Also, an astronaut could see outlines of Russia's geography such as mountain ranges.</span>
4 0
3 years ago
Read 2 more answers
Carrot slices placed in 0.2M salt solution for several hours becomes flaccid (limp). Carrot slices placed in freshwater for seve
Inga [223]

Answer: Option 4.

The fresh water is hypotonic and the salt solution is Hypertonic.

Explanation:

Hypotonic solution is a solution that have little dissolved solutes i.e low osmotic pressure compare to other solution. When a cell is put in hypotonic solution, it take in water and the cell swell up and it does not burst due to it's cell wall thereby becoming turgid or hard.

Hypertonic solution is the solution where the concentration of solute is higher outside the cell than inside the cell. Example is saline water.when a cell is placed in Hypertonic solution it will shrinks because it losses water.

8 0
3 years ago
Read 2 more answers
Which of the following is an example of the current impact DNA technology has on human health?
Xelga [282]

Answer:plants grow

Explanation:te she said so

8 0
3 years ago
A researcher synthesizes a new molecule called inhibitor X that inhibits the activity of phosphofructokinase (PFK), the enzyme t
Oduvanchick [21]

Answer : The dissociation constant of the PFK‑inhibitor complex is, 5 µM

Explanation :

The expression for reversible competitive inhibition when apparent Km affected by addition of the inhibitor is:

K_m_a=K_m[1+\frac{I}{K_i}]

where,

K_m_a = apparent value = 52 µM

K_m = Michaelis–Menten constant = 40 µM

I = inhibitor concentration = 1.5 µM

K_i = dissociation constant of the PFK‑inhibitor complex

Now put all the given values in the above formula, we get:

52\mu M=40\mu M[1+\frac{1.5\mu M}{K_i}]

K_i=5\mu M

Therefore, the dissociation constant of the PFK‑inhibitor complex is, 5 µM

7 0
3 years ago
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