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irakobra [83]
3 years ago
14

How are forest and grassland main

Biology
1 answer:
Llana [10]3 years ago
4 0

Answer:

Grasslands are areas where the vegetation is dominated by grasses (Poaceae); however, sedge (Cyperaceae) and rush (Juncaceae) families can also be found along with variable proportions of legumes, like clover, and other herbs. Grasslands occur naturally on all continents except Antarctica. Grasslands are found in most ecoregions of the Earth. For example, there are five terrestrial ecoregion classifications (subdivisions) of the temperate grasslands, savannas, and shrublands biome (ecosystem), which is one of eight terrestrial ecozones.

Explanation:

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The kcat for Rubisco is 3 sec-1 How long does it takeone<br> subunit of Rubisco to do one reaction.
bekas [8.4K]

Answer:

A subunit of Rubisco takes approximately 0.33 s to perform one reaction

Explanation:

The kcat it's a kinetic first order constant that related the properties of the enzyme substrate complexes in a mechanisms and represents the overall first order process of the transformation of the substrate-enzyme complex into product.

Also kcat can be seen as the turnover number of an enzyme, representing the maximum number of substrate molecules that the enzyme can transform into product per time unit and per active site.

If the kcat is 3 s^-1, it means Rubisco can catalyse the transformation of 3 substrate molecules per second.

So, the time that takes a single reaction, should be the inverse of kcat.

To see it more clearly, the time needed for a single reaction is the time observed divided by the number of reactions done during that time.

In other words:

3 reactions ----------- 1 s

1 reaction -------------- x

  • x=1 reaction/3 reactions.s^-1 = 1/kcat = 1/3 s ~ 0.33 s

So the time that takes one Rubisco subunit to do one reaction is approximately 0.33 s

5 0
3 years ago
Which of the following choices is not a key characteristic to differentiate cancer cells from normal cells?
nataly862011 [7]

Answer:

cells that should not invade other tissues do invade other tissues

Explanation:

6 0
3 years ago
____________- this element is necessary for respiration. There will only be as much respiration as this element is available.
Stolb23 [73]

Answer: Oxygen

Explanation:

7 0
3 years ago
Define Chromosome, gene, and chromatid. Draw a picture of a chromosome and label it. Write a brief summary of both videos (at le
g100num [7]

Answer:

i can only define the terms for you.

Explanation:

chromosome - a threadlike structure of nucleic acids and protein found in the nucleus of most living cells, carrying genetic information in the form of genes.

chromatid - each of the two threadlike strands into which a chromosome divides longitudinally during cell division, each containing a double helix of DNA.

gene - a distinct sequence of nucleotides that forms a part of a chromosome, the order of which determines the order of monomers in a polypeptide or nucleic acid molecule which a cell or virus that may synthesize

5 0
3 years ago
Fermentation and aerobic respiration break down glucose to make
Eddi Din [679]

Answer:

D

Explanation:

Fermentation produces a net gain of 2 ATPs

Aerobic respiration produces a net gain of 32 ATPs

6 0
3 years ago
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