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 a stem cell research?
Ludmilka [50]
Stem cells<span> are a class of undifferentiated </span>cells<span> that are able to differentiate into specialized </span>cell<span> types. Commonly, </span>stem cells<span> come from two main sources: Embryos formed during the blastocyst phase of embryological development (embryonic </span>stem cells<span>) and. Adult tissue (adult </span>stem cells<span>).

hope this helps!</span>
6 0
3 years ago
W dostępnych źródłach wyszukaj informacje o położeniu i roli wybranych narządów organizmu człowieka. Uzupełnij tabelę.
ss7ja [257]
What are you trying to say?
8 0
3 years ago
Read 2 more answers
in order to be classified as a "tropical rain forest" a forest must be located between which two tropics
marshall27 [118]
Cancer and capricorn :)))))
3 0
3 years ago
Read 2 more answers
What amino acid does the t-RNA carry with the anticodon UAC?
Nikolay [14]
The tRNA carries the amino aci methionine (Met), which is the amino acid specified by the mRNA codon AUG.

not sure if this is the exact answer you want but hope this helps!!
4 0
2 years ago
The highest frequency sound is detected by Group of answer choices unique hair cells located anywhere along the basilar membrane
Jet001 [13]

Answer:

Option A, unique hair cells located anywhere along the basilar membrane

Explanation:

When ever a high frequency sound wave is perceived by the Organ of Corti, it magnifies. In the magnification process of Organ of Corti, basilar membrane and along with Organ of Corti moves up and down. On the top of Organ of Corti, the hair cells protrudes. With the movement of basilar and tectorial membranes up and down, the hair cells also move laterally.

Hence, option A is correct

8 0
2 years ago
Other questions:
  • What type of bond keeps each individual DNA strand together?
    14·1 answer
  • The nurse is caring for a spanish-speaking patient who is visually impaired. how can the nurse ensure an effective teaching–lear
    8·1 answer
  • Which body cavity can be subdivided into four quadrants and nine regions:?
    13·1 answer
  • Which type of spectrum is expected from a glowing hot solid?
    7·1 answer
  • The primary producers in an ocean grazing food web are usually ________.
    12·1 answer
  • Which statement best explains how each of the different cell types can develop from the same embryo
    6·2 answers
  • What always occurs when energy moves from one trophic level to the next higher one?
    10·1 answer
  • Why is water such an important component of soils?
    9·1 answer
  • Which process occurs when bacteria converts nitrogen gas to a usable form?
    12·1 answer
  • Enter the correct 4 digit code (no spaces) *<br><br> This is a required question
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!