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
antiseptic1488 [7]
3 years ago
8

Which of the following is a true statement about scientific theory? Question 1 options: Scientific theory is an absolute certain

ty. Scientific theory is a reasonable guess. Scientific theory is the same as a true statement. Scientific theory may be revised.
Biology
2 answers:
Anna007 [38]3 years ago
6 0

Answer:

I think its scientific theory is the same as a true statement.

vredina [299]3 years ago
5 0

Answer:

Scientific theory may be revised.

Explanation:

Scientific theory is based on the current scientific research. If new research is conducted and different conclusions made, then a theory may be revised.

You might be interested in
In Drosophila melanogaster, the recessive allele for the sepia locus (se) causes flies to have very dark colored eyes. The reces
Dima020 [189]
The answer will be E
5 0
3 years ago
In this week's experiments, if you replaced glucose with the monosaccharide fructose, predict the results for fructose transport
lbvjy [14]

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.

6 0
2 years ago
Why is the axon of a ganglionic neuron called a postganglionic fiber?
ivolga24 [154]

Away from the ganglion The axon of a ganglionic neuron is called a postganglionic fiber because it carries impulses. an accumulation of extracellular fibrillar proteins and abnormal dendrites and axons.  A “ganglion” is essentially a living relay. The inputs are “pre-ganglionic” and the outputs are “post-gangionic.” Simple.

7 0
2 years ago
When you eat salmon for dinner, your digestive system will break down that food
zimovet [89]

Answer:   c. Amino Acids

Explanation:

Food is chemically and mechanically broken down into smaller particles like building blocks, the smallest of these are a basic unit called monomers. In the <em>stomach</em>, the enzyme pepsin breaks proteins, like those found in salmon, into smaller peptides by splitting the peptide bonds holding the proteins together. The <em>duodenum</em> processes these newly-formed peptide chains or polypeptides, into smaller ones, through the enzyme action of elastase, trypsin and chymotrypsin; these are produced in the pancreas. Peptidases convert these fragments into amino acid monomers for absorption into the bloodstream via the small intestines.

6 0
3 years ago
Any part of an ecosystem that is a biotic is
MrRa [10]

Answer:

is non-living

Explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • Bronchitis is a disease of which of the following organs?
    9·1 answer
  • In a forest ecosystem including rabbits, wolfs, foxes, and plants, what are two possible reasons the rabbit population might dec
    15·2 answers
  • Which actions are part of the process of scientific inquiry? Check all that apply.
    12·2 answers
  • What is a biotic factor in a coral reef ecosystem?
    10·2 answers
  • The immune system is the body's defense against disease. White blood cells, or lymphocytes, are one type of immune system cell.
    6·1 answer
  • Which one of the following is true for a theory?
    14·1 answer
  • What is the tip of a chromosome called
    6·1 answer
  • Which process makes it possible for all the major organs of the body to be formed by week 10 of human development?
    8·1 answer
  • BRAINLIESTTTT ASAP!!!
    13·2 answers
  • An element ____.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!