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3 years ago

Some examples of non-polar molecules include fats, oils, and waxes. How do these substances interact with water?

1 answer:

6 0

Since non-polar molecules are equally distributed and positively charged atoms in contrast with polar molecules. Thus, like fats oils and waxes, these materials are composed mainly of lipids or in the group of fats and are conspicuously insoluble with water. How do these substances interact with water? They are hydrophobic, thus, they don't "mix" with water. Unlike water and other polar molecules that are unequally and negatively distributed and charged making them able to bond with other molecules like oxygen and other polar molecules and substances.

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In a genetic cross between aabbccddee and aabbccddee what fraction of the offspring will be homozygous dominant for all five gen

aniked [119]

Answer:

None

Explanation:

The desired homozygous dominant genotype is AABBCCDDEE. To have an offspring with genotype "AABBCCDDEE", at least one copy of the dominant alleles for the genetic loci should be present in either of the parent. However, both the parents are homozygous recessive for all the five mentioned genetic loci and therefore, cannot have a progeny with homozygous dominant genotype "AABBCCDDEE". All the progeny of a cross between the two parents each with genotype "aabbccddee" would have homozygous recessive for all the give loci.

aabbccddee x aabbccddee = All aabbccddee

7 0

3 years ago

in which of the following substances is a plant more likely to fossilize a)mud b)sand c)gravel d)magma

NeTakaya

I'm not sure, but I think it would be mud.

3 0

2 years ago

Compare and contrast the mechanisms of getting material across the plasma membranes of cells. Tells me what the mechanisms are i

stepladder [879]

Answer:

Materials get transported from the cell by some mechanisms such as Active Transport, Passive Transport, Diffusion, etc.

Explanation:

Active Transport :

It is a process by which, materials are transported from the extracellular membrane to the intracellular membrane with the help of ATP. It has a few types :

Primary Active Transport :

This system is standing upon the sodium-potassium pump. It moves out Na⁺ from the cell and allows the entry of K⁺ into the cell. In this process ATP is a source of energy. E.g, Sodium-potassium pump.

Secondary Active Transport :

It is mainly standing upon Primary Active Transport. In this process, the main key point is the concentration gradient. There is already a concentration gradient set up by the primary active transport. This system uses that up and moves other substances against their own gradient concentration. E.g, assuming, there is a high concentration of sodium outside the cell, if a route such as a channel or a carrier protein is open then sodium ions will move into the cell. In this transport system, some cotransporters are used who move in the sodium ion into the sodium gradient.

Passive transport :

It is a process by which, substances cross the plasma membrane without acquiring any energy from the cell. Here, no energy is needed because the substances are moving from higher concentration to its lower concentration. E.g, cell membrane or plasma membrane works as a permeable or semipermeable membrane.

Diffusion :

It is the movement of a substance across a membrane, due to the concentration gradient, without any help from other molecules. E.g, movement of the gaseous molecule from cell to cell.

8 0

3 years ago

Which of the following are helpful ways to use magnets?

KatRina [158]

I believe the answer is all of the above

5 0

3 years ago

what is the order of three genes (x, y, and z) that are located on the same chromosome, based on the following information? gene

Mekhanik [1.2K]

The recombination frequency between genes is useful to determine the distance between genes and their order in the chromosome. The correct order of genes in this chromosome is X-Z-Y.

<h3>What is the recombination frequency?</h3>

Recombination frequency refers to the probability of crossing-over events occurrence between two genes. There farther genes are from each other, the greater recombination frequency there will be.

Recombination frequencies are also used to determine the distance between genes, and if they are linked or not.

So, if we know the recombination frequencies, we can calculate the distances between the genes and figure the genes' order out.

The map unit is the distance between the pair of genes for which one of the 100 meiotic products results in a recombinant one.

1% of recombination frequency, RF = 1 Map Unit, MU = 1 centiMorgan, cM

Now let us analyze the data

Three genes ⇒ X, Y, Z.
Distance between X-Y = 17% = 17 MU
Distance between Y-Z = 9% = 9 MU
Distance between X-Z = 8% = 8 MU

When the RF is given, we already have the distance between genes.

Now, to put these genes in order, we need to look for the most distant genes. These are probably the ones placed at the extremes of the chromosomal fragment.

In this case, the most distant genes are X-Y. So,

---------X-----------------Y---------

17 MU

Then, we need to place the remaining genes, which are probably between the two extremes genes. To be sure of this position, the addition of these middle genes must equal the distance between the extreme genes.

In our example, we only have one remaining gene Z.

The distance from X to Z = 8 MU
The distance from Y to Z = 9 MU
9 MU + 8 MU = 17 MU which is the distance between X and Y (extreme genes)

-----------X-------------Z----------------------Y---------

║----8MU---║------- 9 MU -----║

║-------------17 MU ---------------║

So, according to this reasoning, the correct order of genes in this chromosome is X-Z-Y.

You can learn more about the recombination frequency at

brainly.com/question/13243739

brainly.com/question/20713958

brainly.com/question/11105396

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3 0

1 year ago