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erica [24]
3 years ago
15

Enter the correct 4 digit code (no spaces)

Biology
1 answer:
-Dominant- [34]3 years ago
7 0

Answer:

as a teacher i can help

Explanation:

q1 is d, a phenotype is how you look, so its 4. q2 is b, its one possiblity out of 4, so its 1. q3 is a, thats a pedigree chart, so its 7. q4 is c, if they both are expressed they are co dominate, so its 2.

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How is the FOG produced?
gayaneshka [121]
Fog begins to form when water vapor condenses into tiny liquid water droplets that are suspended in the air.
3 0
3 years ago
Read 2 more answers
Protozoans are the only organisms that can convert nitrogen from the air into chemical compounds that plants can use.
tigry1 [53]

Answer: False

Explanation:

Protozoans are not the organism that fix nitrogen for the plants. The organism that fix nitrogen to convert it into a form which can be used by plants are known as diazotrophs.

These are bacteria and archae that fix nitrogen gas found in the atmosphere into more usable form such as ammonia.

These organism can grow without any external source of fixed nitrogen. Example: Rhizobia and azospirillium.

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
3 years ago
Large predators are found at higher trophic levels, what does this mean in terms of energy loss ?
VARVARA [1.3K]

Large predators are found at higher trophic levels because specialized bodies are needed to extract the small energy that gets to them.

The energy that gets to successive trophic levels decreases progressively because much of it is lost as heat. This means that a small percentage of the energy from the producers that form the bases of trophic levels to the predators that are somewhat at the top of trophic levels.

With big body size, the bodies of predators are organized into systems that work together to efficiently extract the small energy that gets to them from immediate lower trophic level.

More on the energy from trophic levels can be found here: brainly.com/question/13375401?

6 0
2 years ago
How does composting help the environment
tamaranim1 [39]
It produces new, organic, rich soil, that can contribute to agriculture and farming, as well as the decomposers that live in them. It is very good to compost.
5 0
3 years ago
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