1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alla [95]
3 years ago
7

What once was an open pasture on a long abandoned farm has changed over time, without the direct influence of humans. after the

cattle had been removed, shrubs and bushes could be seen dotting the grass-covered hillsides. a few years later, small pine trees and then larger deciduous trees appeared. now, there are so many trees and shaded regions it is difficult to tell that this was once a field?
Biology
1 answer:
Komok [63]3 years ago
8 0

The mentioned case represents secondary succession.  

Secondary succession is one of the two kinds of ecological succession of plant life. Secondary succession refers to a procedure initiated by an incident, like harvesting, forest fire, hurricane, and others, which minimizes an already settled ecosystem to a lesser population of species.  

Thus, it can be said that the secondary succession takes place in preexisting soil on the other hand primary succession takes place in a place devoid of soil.  

Secondary succession is the ecological succession, which takes place after the initial succession has been disrupted and certain plant and animal species do prevail. It is usually faster in comparison to primary succession.  


You might be interested in
The kidneys can have a direct influence on ___________, by pushing hydrogen ions and bicarbonate into and out of urine.
Marianna [84]
<span>The kidneys can have a direct influence on the urinary system, by pushing hydrogen ions and bicarbonate into and out of urine.Without the kidneys performing its duties within the body, waste materials can poison other internal organs causing infection and other complications to occur within the body.</span>
4 0
3 years ago
Please answer as soon as possible will give brainly!
sergeinik [125]
1. D 2.F. 3.G. 4.E. 5.H 6.C 7.I. 8.B. 9.A
3 0
2 years ago
Hexokinase can use glucose or fructose as a substrate. The Km forglucose is 0.15 mM and for fructose Km = 1.5 mM.
babymother [125]

Answer:

a) glucose because Km is less for glucose.

b) For glucose, V as a percentage of Vmax = 50 %

   For fructose, V as a percentage of Vmax = 9 %

Explanation:

a) Hexokinase has highest affinity for glucose because it's Km for glucose is low.

When enzyme [E] binds a substrate [S] an [ES] complex is formed. It is represent as under:

                  [E]  +   [S]    ⇌    [ES]   ⇌   [E] +  [P]

As soon as  [ES] is formed it may either form [E] & [P] in a forward reaction or dissociate back into [E] & [S]. Km is known as dissociation constant which represents the extent to which [E] & [S] are being formed. A higher value of Km represents formation of more [E] & [S] back from [ES]. It also means that binding affinity of enzyme with substrate is less or we can say that Km is inversely proportional to binding affinity.

                    Km  ∝  1 / binding affinity.

So, it simply means that lower the Km more will be the affinity of the enzyme for the substrate. In the given question, Km for glucose is 0.15 mM which is less than fructose (Km for fructose = 1.5 mM) that is why glucose is the answer.  

b) The formula for Michaelis–Menten equation is as under:

                    V = Vmax × [S] / ([S] + Km)

                    V / Vmax =  [S] / ([S] + Km)

Here, for glucose Km = 0.15 mM and [S] = 0.15mM.

So V as a percentage of Vmax for glucose will be as under:

                    V / Vmax =  0.15/0.15 + 0.15

              →    V / Vmax =  0.15/0.30

              →    V / Vmax =  0.5 = 1/2 = 50 %

Here, for fructose Km = 1.5 mM and [S] = 0.15mM.

So V as a percentage of Vmax for fructose will be as under:

                    V / Vmax =  0.15/0.15 + 1.5

              →    V / Vmax =  0.15/1.65

              →    V / Vmax =  0.09 = 9/100 = 9 %

5 0
3 years ago
Which of these is not a fossil fuel coal,biodiesel,gas,diesel
IrinaK [193]

Biodiesel

Hope this helps :)

8 0
3 years ago
Cell analogy project poster
Oxana [17]

Explanation:

please mark as brainlist answers

8 0
2 years ago
Other questions:
  • What is Grave's disease?
    11·1 answer
  • Biology help pleaseee (:
    13·1 answer
  • How might DNA damage go on to affect the rest of the cell cycle if apoptosis did not occur
    7·2 answers
  • Which of the following is a characteristic of the tidal region of an ocean
    6·1 answer
  • 10 points and brainliest!
    12·1 answer
  • When you look at the night sky, sometimes there is a full Moon and sometimes the Moon looks like it’s barely there. Why does thi
    10·1 answer
  • What type of rock forms when magma cools?
    5·2 answers
  • I neeeeeeed help hurrrryyyy
    5·2 answers
  • What term describes the continuation of a visual sensation.
    7·1 answer
  • A strain of bacteria has a CRISPR-Cas system, but a mutation has destroyed the function of the Cas9 gene. How will the strain of
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!