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mario62 [17]
3 years ago
14

What can you tell about an igneous rock that has a fine texture?

Biology
1 answer:
alukav5142 [94]3 years ago
5 0

Answer:c

Explanation:it is most likely extrusive

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You introduce cyanide to an actively respiring mitochondrion. Cyanide blocks the transfer of electrons from the last cytochrome
enot [183]

Answer:

The answer is true, the pumping of hydrogen ions decreases and finally stopps.

Explanation:

As the cyanide blocks the bindinge site for oxygen, which is normally reduced to water, the pumping of hydrogen from the matrix into the space between the mitochondrial membrane decreases and finally stopps. There is an accumulation of electrons and the components of the respiratory chain are completely reduced, therefore the respiratory chain stopps working.

5 0
2 years ago
3. What instrument measures air pressure? What unit of measurement is used to measure air
diamong [38]

Answer:

Barometer (mb)

Explanation:

3 0
3 years ago
In a hypothetical population of 2500 people, 2275 people have brown eyes and 225 people have blue eyes (the homozygous-recessive
aev [14]

Answer:

In the next generation of 4000 children, 1680 of them will be heterozygous for the eye colour.

Explanation:

There's a population of 2500, 2275 of with have brown eyes and 225 blue eyes. <u>Let's call the dominant allele associated with brown colour "B" and the recessive allele associated with blue colour "b"</u>. So the possible genotypes are BB, Bb and bb, being BB and Bb brown eyed individuals and bb blue eyed individuals.

If the population it's in Hardy-Weinberg equilibrium, it means genotypic and allelic frequencies don't change from one generation to the following.

From the information given, we can calculate both allelic and genotypic frequencies.

First, we know that the frequency of the genotype bb it's the amount of blue eyed individuals over the total population.

  • f(bb)=225/2500=0.09

Additionally we know the allelic frequencies can be related to the genotypic ones when the population it's in Hardy-Weinberg equilibrium. Particularly we can say:

  • f(bb)=[f(b)]^2 => f(b)=[f(bb)]^(1/2)= 0.3 <em>(square root of f(bb)).</em>

Also, we can calculate the frequency of the B allele, as the probability of all alleles of the gene sum 1. In other words:

f(b)+f(B)=1 => f(B)=1 - f(b) = 1 - 0.3 = 0.7

So far, we have calculated the allelic frequencies, f(b)=0.3 and f(B)=0.7.

Now we can calculate the genotypic frequencies, using the equations of the Hardy-Weinberg equilibrium.

  • f(bb)=[f(b)]^2 => f(bb)=0.3^2=0.09
  • f(Bb)=2*f(B)*f(b) => f(Bb)=2*0.7*03=0.42
  • f(BB)=[f(B)]^2 => f(BB)=0.7^2=0.49

Finally, knowing that there are 4000 children in the next generation, to know how many of them are expected to be heterozygous for the eye colour, we should multiply the number of children for the probability of being heterozygous for the eye colour (which is the genotypic frequency for the genotype Bb).

  • Nº of heterozygous individuals = f(Bb)*total population= 0.42*4000
  • => Nº of heterozygous individuals =1680

<em />

3 0
3 years ago
What problems would animals cells encounter if their cell had a cell wall?
sergey [27]
Cell walls, which are found in plant cells, maintain cell shape. Some animal cells dont need to maintain shape. Such as muscle cells, they are constantly moving.
6 0
3 years ago
How should we keep track of the amount of carbon trees can store?
77julia77 [94]

Answer:

Use the conversion table to convert the circumference of the tree into the dry weight. Half of the dry weight of the tree is carbon, therefore you need to divide the answer for the dry weight by two. This tells you how much carbon is stored in the tree.

Explanation:

6 0
2 years ago
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