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Brums [2.3K]
3 years ago
7

Roots or plant growth making cracks in concrete mechanical or chemical weathering

Biology
1 answer:
tia_tia [17]3 years ago
6 0
The correct answer is mechanical weathering
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In a population of beetles, some are green, some are brown, and some are mixed. If the beetles live in vegetation, the ________
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green its more shiny and more likely to stand out


5 0
3 years ago
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g The Electron Transport Complex (ETC) consists of four proteins. How many of these proteins directly contribute to the proton g
vladimir2022 [97]

Answer:

Three proteins directly contribute to the proton gradient by moving protons across the membrane

Explanation:

The Electron transport chain is a group of proteins and molecules incrusted in the internal mitochondrial membrane and organized into four complexes, I, II, III, and IV. These complexes contain the electron transporters and the enzymes necessary to catalyze the electron transference from one complex to the other. Complex I contains the flavine mononucleotide -FMN- that receives electrons from the NADH. The coenzyme Q, located in the lipidic interior of the membrane, conducts electrons from complex I and II to complex III. The complex III contains cytochrome b, from where electrons go to cytochrome c, which is a peripheric membrane protein. Electrons travel from cytochrome c to cytochromes a and a3, located in the complex IV. Finally, they go back to the matrix, where they combine to H+ ions and oxygen, to form the water molecule. As electrons are transported through the chain, protons are bombed through three proteinic complexes from the matrix to the intermembrane space. These are complexes I, III and IV.  

6 0
2 years ago
Which is a basic characteristic of all living cells?
dolphi86 [110]

Answer:

Energy Metabolism

Explanation:

In order to a living cell you need to be able to reproduce, have energy metabolism, etc.

5 0
3 years ago
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Which step can occur even more rapidly by PCR?a. target DNA removed from cells and isolated b. cloning host treated with calcium
lisabon 2012 [21]

Answer:

E. Gene is amplified by multiplication of cloning host

Explanation:

PCR is a very powerful technique that can help us to amplify exponentially one gene from a very small sample of DNA.

As seen in the attached image, the process begins with a single DNA molecule, for the first cycle, that DNA molecule denaturalizes into two strands, the primers bind to their complementary sides and then the DNA polymerase builds the new DNA strands. The number of copies of the gene that can be obtained with each cycle are 2ⁿ copies, where n is the cycle number.

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3 years ago
Which organelle is most prominent when looking at cheek cells under the microscope?
SpyIntel [72]
<span>Nucleus. Would be your answer</span>
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3 years ago
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