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
Neko [114]
3 years ago
6

In this week's experiments, if you replaced glucose with the monosaccharide fructose, predict the results for fructose transport

under all 4 conditions. Explain your prediction.
Biology
1 answer:
lbvjy [14]3 years ago
6 0

Answer: Fructose is transported by facilitated diffusion.

Explanation:

Glucose is a monosaccharide with the molecular formula C6H12O6.3 It is a hexose. It is a form of sugar that is found freely in fruits and in honey. Its energy yield is 3.75 Kcal/g under standard conditions.

Fructose is a type of carbohydrate found in vegetables, fruits, and honey. It is a monosaccharide with the same molecular formula as glucose, C6H12O6, but with a different structure, that is, it is an isomer of glucose. Its energetic power is the same as that of glucose, 4 kilocalories per gram, and it is a reducing carbohydrate.

Glucose is the main energy substance of a cell and for its entry  it requires a transport protein in the cell membrane, called transporter. The transport of glucose through the cell membrane is carried out by two families of membrane proteins:

  • Sodium-coupled glucose transporters (SGLT sodium-glucose-transporters), which involves the co-transport of Na+ by the SGLT-1 by maintaining the Na+ gradient thanks to the Na+/K+ pump
  • Glucose transport facilitation proteins (GLUT)

On the other hand,  fructose is absorbed by another type of transporter, called Glut-5, a protein that crosses the membrane 12 times. Finally, the passage of both glucose and fructose into the blood takes place through the Glut-2, a transporter with low affinity and high transport capacity.

If any Glut is considered within the context of a large family of proteins, it can be immediately noticed that they all possess common characteristics that in biochemical terms are called "molecular signature of glucose transporters" and that it is no more than a set of extremely conserved primary amino acidic sequences that determine secondary and tertiary structures (domains or motifs) that are responsible for the functional characteristics of the protein.

<u>Facilitated diffusion is a type of cellular transport where the presence of a carrier or transporter (integral protein, Glut is this example</u>)<u> is necessary for substances to cross the membrane.</u> It happens because the molecules are larger or insoluble in lipids and need to be transported with the help of membrane proteins. So, in the first step, fructose binds to the transport protein, and this changes shape, allowing the passage of this sugar. In this way, fructose concentrations inside the cell are always very low, and the external and internal concentration gradient favours diffusion.

Summarizing, fructose is transported by facilitated diffusion. So if we replaced glucose with fructose we would have seen no change in each conditions. And since fructose is transported by this type of mechanism, there is not a concentration gradient.

You might be interested in
What is the relationship between working distance and field of view​
mel-nik [20]

Answer:

yeah

Explanation:

Field Of View (FOV): The Viewable area of the object under inspection. In other words, this is the portion of the object that fills the camera's sensor. Working Distance (WD): The distance from the front of the lens to the object under inspection. Resolution: The minimum feature size of the object under inspection.

4 0
3 years ago
What kind of magnet is a fridge magnet
ANTONII [103]
<span>Ferrite Magnets (</span><span>ferromagnetic or ferrimagnetic) </span>are the kinds of magnets in a fridge magnet. <span>A refrigerator magnet is made of </span>powdered ferrite<span> (iron rust) and a liquid binding agent of </span>plastic<span> or rubber. The two are heated, mixed together, and poured into a sheet mold which is then exposed to a strong magnetic field.</span>
8 0
3 years ago
Cleaning products and household cleaners are mostly? A.Basic . Acidic C. Neutral D. none of the above
valkas [14]
B. Acidic
Hope this helps!!
8 0
3 years ago
Read 2 more answers
Which rocks cool the slowest.
Sladkaya [172]
Dioride, gabbro, granite - they're intrusice ingeour rocks.
8 0
3 years ago
Why is it necessary for green plants to carry out both photosynthesis and respiration?
finlep [7]
To survive and to reproduce
6 0
3 years ago
Read 2 more answers
Other questions:
  • The body's endocrine system consists of which glands?
    8·1 answer
  • What digits are significant when recording a measurement
    6·1 answer
  • How are sperm cells transmitted? And how does a condom prefent sperm cells in transmitting?
    7·1 answer
  • Active Enzyme + (1)______ → (2)______ + (3)______ A) (1) Product (2) Substrate (3) Active Enzyme B) (1) Substrate (2) Product (3
    12·2 answers
  • Mrs. And Mr. Smith both have widow's peaks (dominant). Their first child also has a widow's peak, but their second child doesnt.
    13·2 answers
  • What is not true about the process pictured
    9·1 answer
  • What type of volcano would you most expect to erupt?
    9·2 answers
  • Are species in the same family more or less closely related than species in the same class?
    8·1 answer
  • A plant with dark red flowers is crossed with a plant with white flowers. all of the offspring have dark red flowers with white
    13·1 answer
  • Using the Gizmo, determine how coal and petroleum (oil) are formed. Describe the steps required to form each fuel from atmospher
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!