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ale4655 [162]
3 years ago
13

Which of the following statements about competition is true?

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

Answer:

B

Explanation:

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"The total concentration of receptors in a sample is 10 mM, and the concentration of free ligand is 2.5 mM. Calculate the percen
Mice21 [21]

Answer:

16.66 %

Explanation:

The receptors that are bound with the ligand can be calculated by the formula as follows:

Kd = [R] [L]/[RL]

Here, Kd is dissociation constant = 1.5 mM

R is free receptor concentration = 10 mM

L is free ligand concentration = 2.5 mM

The values needs to be constitute to find the percentage  of receptors that are bound to ligand.

Put all the values

1.5 = 10 × 2.5 / RL or RL = 25 /1.5

So RL = 16.66

Hence 16.66 % of receptor is bound to substrate.

Thus, the answer is 16.66%

3 0
3 years ago
A microscope has an ocular objective of 10x and a high
wolverine [178]
50x + 10x would = 60x
8 0
2 years ago
Which of the following shows natural selection?Select one:a.A horse's parents were racers. The fastest horses are bred to produc
Yakvenalex [24]

Natural selection is the process in which some organisms that show better adaptation to the environment are more likely to produce an offspring. In the case of the exercise, the answer is:

b. Some tuna live in the Pacific Ocean. They are fast, so they are likely to survive and pass on their genes.

It means that as they are better adapted to that environment due to the fact they are fast swimmers, they are likely not only to survive, but to pass their genes and produce offsprings.

3 0
1 year ago
How do plants and animals get nitrogen if not from the atmosphere?
GenaCL600 [577]

Answer:

Our atmosphere (air) is comprised of 78% of nitrogen. However, this nitrogen is in its elementary state (N₂) and therefore is quite inactive, so the plants can not use it directly. Changing the elementary nitrogen into more reactive forms (NH₃, NO₂, HNO₃) is occurring through the process called nitrogen fixation. It is happening via two processes.

First one is physical nitrogen fixation. When some type of atmospheric physical energy (lightning bolt, for example) reacts with N₂, it splits it in two very reactive N atoms, enabling them to react with oxygen in order to form NO₂.

Second process is biological nitrogen fixation. It's done by bacteria, special bacteria living in the soil, able to use elementary nitrogen for its metabolical pathways resulting in production of ammonia, which can be used by plants. It's noteworthy that bacteria are responsible for about 90% of all nitrogen fixation.

8 0
3 years ago
Think about how sedimentary rocks form. Can you determine which fossils in the image are the oldest and which fossils are the yo
Dafna1 [17]

Answer:

Considering the formation of sedimentary rocks, the fossils in layer C are the oldest. Sedimentary rocks form in layers, with the oldest rock at the bottom. So, the fossils in layers A and B are newer than the ones in layer C. The fossils in layer A are the newest fossils

Explanation:

5 0
2 years ago
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