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erastovalidia [21]
2 years ago
9

Which one of the following observations did Darwin first make during his discovery of evolution? a. The ability of individuals t

o survive and reproduce is not equal. b. There is variation in inherited traits. c. Individuals who reproduce more leave more offspring. d. The unequal ability to reproduce leads to the accumulation of favorable traits in a population.
Biology
1 answer:
bazaltina [42]2 years ago
6 0

The correct option is (b) There is variation in inherited traits.

Darwin made the following observations that informed his theory of natural selection: Overproduction, Variation, Selection, Survivors.

<h3>What were the darwins observation?</h3>
  • The first observation is overproduction. This shows that every species has more offspring than will grow up to be adults. Think about all the fish eggs that are produced every year.
  • This suggests that organisms should constantly reproduce, but they do not because mechanisms like food competition, predators, and disease exist to limit population growth.
  • Darwin was able to infer from this that there is a struggle for existence.
  • Darwin's second finding was variation. This suggests that members of the same species exhibit a range of features. For instance, the pattern and color of the stripes on zebras vary. Scales on goldfish might be entirely gold, entirely orange, entirely brown, or a mix of all three.

Learn more about the Darwin's theory with the help of the given link:

brainly.com/question/12790248

#SPJ4

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What is the best choice for a blank when calibrating the spectrophotometer when you will later measure the absorbance of beverag
ELEN [110]

When calibrating a spectrophotometer, measuring absorbance concurrently is the best option for a blank since it is proportional to the concentration.

Beer's law states that A = a b c, wherein there is the diffusion coefficient at a constant, b is the actual route length, & c is the concentration. Direct proportionality exists between b and c and absorbance.

Once the route length is doubled, incident light contacts double as many molecules in the solution. The consequence is a doubling of absorbance, which is equivalent to a doubling of molecule concentration.

There are two ways to detect chemicals using spectrum scanning. One approach involves turning the monochromator continuously with a stepping motor while gradually altering the wavelength connected to the output slit.

It is more practical to use diode array detectors. Up to a few hundred photodiodes may be incorporated into the chip that makes up this device.

Learn more about spectrophotometers at

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6 0
1 year ago
According to the graph, which of these statements is true?
lorasvet [3.4K]

Answer:

The correct answer is D

Explanation:

That's why in the graph the best reaction of the enzyme is on 40° C.

On low temperatures the enzyme activity is too low.

On very high temperatures it fall, so the enzyme works better in the middle temperatures.

3 0
3 years ago
Hmg-coa reductase is a highly regulated enzyme. identify three distinct mechanisms by which this enzyme is regulated. for each,
Rufina [12.5K]
Regulation of HMG-CoA reductase is termed as the rate of controlling enzyme of the mevalonate pathway which produces other isoprenoid and cholesterol.
The regulation of cholesterol is done by regulating the rate which determines step catalyzed by HGM -CoA reductase.
There is long-term and short-term regulation where HGM-CoA is inhibited by phosphorylation and catalyzed of proteins. There is regulated proteolysis of HGM-CoA reductase where degradation of HMG-CoA reductase by oxidized derivatives of cholesterol.
5 0
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The most permeable capillaries, which contain fenestrations and large intercellular clefts, are called __________.
mote1985 [20]

Answer: Sinusoid capillaries

hope this helps!

5 0
2 years ago
21. List the 4 largest satellites orbiting Saturn from smallest to largest.
Diano4ka-milaya [45]

Dione

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Rhea

Titan

Explanation:

Saturn is the sixth planet in the solar system. It is one of the four Jovian planets that are predominantly made up of gas.

Saturn is most notable for its three rings.

  • This solar body has 18 known satellites revolving round it.
  • They are pulled by Saturn gravity.

The four largest satellites orbiting Saturn are:

  name of satellite               diameter(km)

            Dione                             1123

            Lapetus                          1470

            Rhea                               1527

             Titan                              5149

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3 0
3 years ago
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