What is meant by the term Reference Front?

Answers

Answer 1

Explanation:

The RF value is defined as the ratio of the eistance moved by the solute(i.e the day or pigment under test)and the distance moved by the solvent (known as solvent front)along the paper,where both distance are measured from the common origin or application baseline,that is the point where the sample is


Related Questions

5. Studying light from a star allows us to… a. determine a star's temperature b. determine what elements the star is made of c. determine how a star is moving (toward, away, fast, slow) d. all of these e. none of these

Answers

Answer:

The correct answer is option C "determine how a star is moving (toward, away, fast, slow)"

Explanation:

All realized components emanate and assimilate specific frequencies of light, which is important for the electromagnetic range. By considering the frequencies of light (as demonstrated by 'lines' inside the electromagnetic range) discharged by an object in space, astronomers can get a scope of information.

One thing they look at is the adjustment in situation of lines in the range from a star this can tell astronomers the distance away the star is, regardless of whether it is moving towards or away from us and how quick it is moving.

What kind of interactions do you think biologists might look at as they study a population of sheep??

Answers

Answer:

Their mating rate and migration patters

Explanation:

A population of foxes inhabits a small forest. The size of the population is currently below the forest's carrying capacity for the foxes. Which factor could cause an increase in the population's growth rate?

Answers

Answer: an increase of food

Explanation:

Answer and Explanation:

Answer: C. An increase in food availability increases the birth rate in the population.

Explanation:

The conveying limit of a biological system can be characterized as the greatest size of a populace of an animal types an environment can uphold based on accessibility of assets, for example, food, water, living space and different necessities.

An increase in food availability increases the birth rate in the population

is the right choice in light of the fact that to build the populace till the conveying limit there should be excess stock of food ought to be accessible to the populace which can uphold in expansion in birth rate so the populace can achieve a level at the conveying limit.

3. A population of 820 insects lives in a 1.2-acre area. They gather nectar from a
population of 560 flowering plants. The plants live in a 0.2-acre area. Which population
has greater density, the insects or the plants? Why?
Answer:

Answers

Answer:

The plants have the higher population density. This is because, when compared with that of the insects, the number of plant species per acre area is higher; 2800 compared to 683.3

Explanation:

The number of individual species per unit area of land is known as the population density. Population density describes how crowded or spaced out a given species is in a particular area. The higher the population density, the more crowded the species are and vice versa. The formula for calculating population density is given as:

Population density = Number of species/land area

Population density of the insects = 820/1.2 = 683.3 insects/acre

Population density of the plants = 560/0.2 = 2800 plants/acre

Therefore, the plants have the higher population density.

This is because, when compared with that of the insects, the number of plant species per acre area is higher.

The population which has greater population density is the flowering plants with a population density of 2800 per acre.

Definition:

The population density is a measure of how crowded an area is. In essence, the population density of an area is simply defined as the number of species per unit land area.

Mathematically, the population density is evaluated as follows;

Population density = No. of species/Land area.

As a result;

The population density of the insects is;

P.D(insect) = 820/1.2 = 683.33 insects per acre.

The population density of the flowering plants is;

P.D(flowering plants) = 560/0.2 = 2800 flowering plants per acre.

Consequently, the population which has greater population density is the flowering plants with a population density of 2800 per acre as opposed to 683.33 per acre of the insect population.

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What is the primary Force that causes the Rock slide, slumping and soil creep? Will it hearttttt

Answers

Answer: Gravity is the main force responsible for mass movements. Gravity is a force that acts everywhere on the Earth's surface, pulling everything in a direction toward the center of the Earth. On a flat surface, parallel to the Earth's surface, the force of gravity acts downward.

I need help I don’t understand!

Answers

Answer:

damm me too i need help with my stuff tooo

Explanation:

Insertion is frameshift
Duplication is chromosomal
Deletion is frameshift
Substitution is point
Translocation is chromosomal
Inversion is point
Hope this helps

3. What structure is responsible for moving the chromosomes during mitosis

Answers

Answer:

chicken

Explanation:

just cus

Larger animals are known as consumers, or _____________, because they prey on smaller animals.

Answers

Answer:

Predators

Explanation:

Predators is the answer I believe

Two steps of photosynthesis are
A) light dependent and dark reaction
B) light dependent reaction and glycolysis
C) Calvin cycle and glycolysis
D) Calvin cycle and Kreb cycle

Answers

A) Light dependent and light independent/Dark reaction

where do kiwi's come from?

Answers

Answer:

The original fruit is from the Far East, having been grown in what is now modern-day China for many centuries. It was only at the turn of the 20th Century, in 1904, that it arrived on New Zealand shores, when New Zealand school principal Isabel Fraser brought some kiwifruit seeds back from her travels.

Explanation:

thanks hope it helps u........ pls mark me as brainliest.......if it helps☺️

Which is a commercial use for lactic acid fermentation? making starch making bread making wine making cheese

Answers

Answer:

making cheese

EXPLAINATION:

During cheese production, the bacteria digest the milk sugar (lactose), producing lactic acid via fermentation

Answer:

making cheese

Explanation:

Can someone help me with this question? Will mark BRAINLIEST.

1.) When DNA splits down the middle and new bases match up with either side, DNA is able to...

a.) make an exact copy of itself.
b.) make a different sequence
c.) make RNA
d.) leave the nucleus

Answers

The answer is A, to make an exact copy of itself. DNA multiplies into many different copies to make new DNA.

Answer:

its going to be number 1

one of the earliest events that distinguish meiosis from mitosis occurs in prophase 1 and involves

Answers

Answer:

This question lacks options, options are:  

A. Pairing of homologous chromosomes

B. Movement of chromosomes towards the metaphase plate

C. Condensation of chromosomes

D. Loss of the nuclear membrane

The correct answer is A. Pairing of homologous chromosomes

Explanation:

Mitosis and meiosis are two different forms of cell division in eukaryotic cells, those that have a nucleus.In meiosis in Prophase I: homologous chromosomes pair up and exchange genetic material by crossing over. In mitosis in Prophase I: genetic material begins to condense and form long, thin strands. The mitotic spindle is formed.During the cell cycle, the eukaryotic cell undergoes a series of changes that lead to the formation of new cells. Depending on the type of cell, it can divide by mitosis or meiosis.

What is a benefit of using renewable energy sources?
A. Clean fuel
B. Sustantible energy.
C. Saves money.
D. No pollution.​

Answers

Answer:

d.no pollution

Explanation:

it doest create any pollution at all

Answer:

B. Sustainable energy

Explanation:

One major benefit of using renewable energy resources is that it provides sustainable energy, since energy sources such as fossil fuels will eventually run out. 

How does melting glaciers affect the water cycle

Answers

Answer:

According to the National Snow and Ice Data Center (NSIDC), if all glaciers melted today the seas would rise about 230 feet (70 meters). During the last ice age (when glaciers covered more land area than today) the sea level was about 400 feet (122 meters) lower than it is today.

Explanation:

where photosynthesis happens​

Answers

In plants. I think :)

Plweassse answer for me

Answers

Answer:

1 e

2 d

3 b

4 a

5 c

Because the DNA is being recombined with other DNA.

What ^ he/she said!

Hope you have a good day!

ASAP



Which concept is part of the theory of evolution by natural selection?
 A. It is impossible to pass along traits from one generation to the next.  B. The best-adapted animals in a population cannot reproduce
 C. New generations are better suited to survive than previous generations.
 D. Evolution can only cause small changes to a species.

Answers

Answer:

C. New generations are better suited to survive than previous generations.

Explanation:

According to the evolutionary theory proposed by Darwin, evolution can be defined as a gradual process by which organisms change over time. Natural selection is the mechanism by which evolution occurs: organisms exhibit variation that may be passed from one generation to the next, and part of this variation confers an adaptive advantage. The organisms that are better adapted to their environment will have more chances to survive and reproduce, and they will pass these phenotypic changes to the next generation. At the species level, these phenotypic changes between generations are gradual, it is for that reason that evolution is a slow gradual process. In consequence, it is expected that new generations are better adapted to survive in the same environmental conditions.

What are elements found in proteins

Answers

Answer:

Carbon Hydrogen Oxygen and Nitrogen.

Explanation:

Have you heard about Cho Cho Chon Chonp?

Answer:

The elements present in a human protein are Hydrogen, Carbon, Nitrogen, and Oxygen.

Explanation:

-3b - 15 > -24−3b−15>−24

Answers

Answer:

hello :D

Explanation:

10. A student is writing out an argument to give during their debate in
class tomorrow. The student makes the claim that the body's organ
systems interact to carry out the process of obtaining and distributing
nutrients throughout the body. Which two systems work together to
carry out this process?

Answers

Digestive and Cardiovascular system make the most sense. In order to obtain nutrients, you have to digest them, hence the digestive system. In order to distribute those nutrients they have to be passed throughout your body, which both the digestive and cardiovascular system are both capable of. Good luck! :-)

During DNA replication, a complementary strand of DNA is made for each original DNA strand. Thus if a portion of the original strand is tcga actca, then the new strand will be

Answers

Answer:

agcttgagt

Explanation:

DNA is a double helix molecule composed of two complementary DNA strands which are in turn composed of four different nucleotide bases: Adenine (A), Guanine (G), Cytosine (C) and Thymine (T). In the DNA molecule, G and C are bound together as a base pair, while A and T are bound together as another base pair. This complementary base pairing structure means that both DNA strands are complementary to each other. In this case, since the sequence of one strand is "TCGAACTCA", the complementary DNA strand would have the sequence "AGCTTGAGT".

Describe a specific instance where an enzyme assists the human body. What role does the
enzyme play in the chemical reaction

Answers

One specific instance is in rna transcription where the enzyme RNA polymerase helps create a complementary mRNA strand. In general enzymes speed up chemical reactions but lowering the activation energy

An element is best described with the following term:
One particle
Multiple particles
10 points!!

Answers

Answer:

Multiple Particles

Explanation:

Hope this helped, Have a Wonderful Day!!

Select the correct answer from each drop-down menu.
v solution. A particular
Compared to its surroundings, the concentration of solutes is low inside a cell. So, the cell is in a
solute in this cell uses energy for its transport from the cell to its surroundings. This type of transport is called

Answers

Answer:

The correct answers (I think) would be Hypotonic and Active Transport

Explanation:

Answer:

Compared to its surroundings, the concentration of solutes is low inside a cell. So, the cell is in a hypertonic solution. A particular solute in this cell uses energy for its transport from the cell to its surroundings. This type of transport is called active transport.

Explanation:


Help!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

D is answer

Explanation:

taiga is not an aquatic ecosystem

What do I put in the chart? Picture attached

Answers

Answer:

The woman's genotype - Bb

The man's genotype - bb

Chances of having a child with blue eyes - 50%

Chances of having a child with brown eyes - 50%

Explanation:

Many of our traits are determined by our genetics. We inherit genetic information from both of our parents. From each of them, we get one copy of a gene that determines a certain trait. These gene copies are called alleles.

The dominant allele is the one that masks the effect of the other type of allele, called the recessive allele. This means that a person needs to have only one dominant allele in order for its effect to be expressed. In order for the effect of the recessive allele to be expressed, the person needs to have two recessive alleles.

If a man has blue eyes, which is a recessive trait, he needs to have two recessive alleles (bb). This is why the genotype of the man is bb.

If his child has blue eyes, this means that its genotype is bb as well. The mother's eyes are brown, which means that she needs to have at least one recessive allele. Based on this, we can conclude that her genotype is Bb.

Since the mother has one dominant allele, this means that her children could have brown eyes as well. This is what the Punnett square would look like:

    B       b

b   Bb    bb

b   Bb    bb

Two out of four children would have brown eyes, and the other two would have blue eyes. This means that their chances of them having a child with blue eyes are 50%. The chances of them having a child with brown eyes are the same.

Which of these catastrophic events is caused by the warm air from the gulf of mexico and the cold air from the north super celll thunderstorms and has a funnel shaped clouds that produces high speed winds that canlift houses at a F5 scale ?

Answers

Answer:

Hurricane.

Explanation:

Hurricane and tornadoes are the catastrophic events that occur when the warm air from the gulf of Mexico and the cold air from the north combines together. These hurricanes and tornadoes causes a lot of damage and destruction if the speed and intensity are higher. These hurricanes produced in different region and causes destruction in another region due to its mobility.

what is the backbone of RNA made out of?​

Answers

Answer:

Explanation:

It has a deoxyribose and phosphate backbone having four distinct bases: thymine, adenine, cytosine, and guanine. Is a polymer with a ribose and phosphate backbone with four varying bases: uracil, cytosine, adenine, and guanine.

Explain two different perspectives of different marine industries on the carbon cycle.

Answers

Answer:

The marine industries affected the marine life and ocean water in many ways. When carbon dioxide dissolves in seawater, the water becomes more acidic and the ocean's pH drops. In the past two hundred years alone, ocean water has become 30 percent more acidic and faster than any known change in ocean chemistry in the last million years.

Hope it helps!

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