EXPLANATION: A quasi-experimental research is not true experimental research because instead of assigning participants randomly in either the control group or treatment group, it is pre-determined. The control and treatment groups also have different conditions and variables being tested that the researchers themselves do not have control over. This type of experiment is often conducted in research in educational settings.
ANSWER: A. assignment to groups based on some pre-determined characteristic
a managed forest containing only one or two species of trees that are all of the same age is known as a(n) . group of answer choices old growth forest primary forest rain forest commercial forest secondary forest
According to the research, the correct option is forest commercial. A managed forest containing only one or two species of trees that are all of the same age is known as a(n) forest commercial.
What is forest commercial?It is the establishment and management of forest species of a certain class on land for agricultural use or land, therefore, they also receive the name of plantation.
In this sense, as an economic resource among the most frequent plantations in different countries of the world are:
CocoaSugar caneCoffeeTherefore, we can conclude that a forest commercial is the set of cultivation of plants and the land in which species that are all of the same age are cultivated.
Learn more about a forest commercial here: https://brainly.com/question/26781168
#SPJ1
the purpose of an emulsifier in margarine is to: a. keep water and fat from separating b. keep water and fat separated c. sustain the natural flavor of the ingredients d. retain the color
The purpose of an emulsifier in margarine is to keep water and fat from separating.
What is emulsifier?
Emulsifiers are food additives that the Food and Drug Administration has allowed. They aid in the blending of goods that contain immiscible food ingredients, such as oil and water. Many prepackaged and processed foods, such as mayonnaise, margarine, meats, ice cream, salad dressings, chocolate, peanut butter, and other nut butters, shelf-stable icing, cookies, crackers, creamy sauces, breads, baked goods, and ice cream, contain emulsifiers.
Simple emulsions consist of either water suspended in oil (w/o) or oil suspended in water (o/w). A typical o/w emulsion is milk, in which the water phase, or skim milk, and the fat phase, or cream, combine to create small droplets. Margarine, on the other hand, is a mixture of fat and vegetable oils that does not have an emulsion and contains drops of water or skim milk. Emulsifiers are required in both situations to stop the suspended droplets from aggregating and rupturing the emulsion.
Hence the correct answer is A; keep water and fat from separating.
To learn more about emulsifier from the given link
https://brainly.com/question/11615513
#SPJ4
List the molecule if it is a reactant or product and answer the following questions. Indicate which stage of photosynthesis or cellular respiration the molecule is involved in.1. What organisms does it occur in?2. Where does it occur in a eukaryotic cell?3. Role of oxygen4. Role of carbon dioxide5. Role of water6. Role of glucose7. Role of sunlight8. Role of ATP
The reactants are the molecules involved in the reaction, and the products are the molecules that results from the reaction.
Photosynthesis converts carbon dioxide and water into oxygen and glucose.
Cellular respiration converts oxygen and glucose into water and carbon dioxide.
1. Photosynthesis occurs in plants | Cellular respiration occurs in plants and animals
2. Photosynthesis occurs in the chloroplast | Cellular respiration occurs in the mitochondria
3. In photosynthesis oxygen is a product | In cellular respiration it is a reactant
4. In photosynthesis carbon dioxide is a reactant | In cellular respiration it is a product
5. In photosynthesis water is a reactant | In cellular respiration water is a product
6. In photosynthesis glucose is a product | In cellular respiration glucose is a reactant
7. In photosynthesis the sunlight is a reactant | In cellular respiration sunlight is not involved, it happens anytime
8. In photosynthesis ATP is a product (from glucose breakdown) | In cellular respiration ATP is also a product (from glucose breakdown)
In order to position a star on an H-R diagram you must know at least the star's
In order to position a star on an H-R diagram you must know at least the color and apparent brightness.
What is H-R diagram?
A graph of star temperatures (plotted on the horizontal axis) and luminosities, or brightnesses, is known as an HR diagram (plotted on the vertical axis). HR diagrams are useful because they provide crucial details about the stars that are plotted on them.
To learn more about universe click on the link below:
https://brainly.com/question/805395
#SPJ13
. during gel electrophoresis, dna molecules can easily be separated according to size because all dna molecules have the same charge-to-mass ratio and the same shape (long rod). would you expect rna molecules to behave in the same manner as dna during gel electrophoresis? why or why not?
Gel electrophoresis is a method used to split DNA fragments (or different macromolecules, which includes RNA and proteins) primarily based totally on their length and price.
Electrophoresis includes jogging a modern via a gel containing the molecules of interest. Based on their length and price, the molecules will tour via the gel in special instructions or at special speeds, permitting them to be separated from one another.
All DNA molecules have the identical quantity of price in keeping with mass. Because of this, gel electrophoresis of DNA fragments separates them primarily based totally on length only. Using electrophoresis, we are able to see what number of special DNA fragments are found in a pattern and the way massive they're relative to 1 another.
We also can decide absolutely the length of a bit of DNA through analyzing it subsequent to a standard "yardstick" made of DNA fragments of recognized sizes.
learn more about electrophoresis here https://brainly.com/question/6885687
#SPJ1
maximum affinity of direction within the shot occurs:
The circle is the least dangerous of the basic forms. It has no up or down, nor any sides. A circle has no inherent visual dynamic or direction.
Tonal adjustments are a fantastic technique to improve your photographs, from small modifications that make tones easier on the eye to more drastic alterations that completely transform the look of the image. Squares are considered unnatural because there are very few rectangular things in nature. Square indicates drab or outmoded. Squares and rectangles imply being caught in something. The title of the film Room is the best example of a rectangle in film. The Equalize filter redistributes the brightness values of pixels in an image such that they represent the complete range of brightness levels more evenly.
Learn more about visual here-
https://brainly.com/question/1262098
#SPJ4
Blank rivers drain into blank
because the river is blank, how could it not end into blank??
im just doing this fr points lol
thx btw
Answer: Open watersheds rivers rain into ocean
Explanation: but blank rivers drain into blank could mean anything, unless there are words you can choose from than that will narrow it down
Compare the structure of proteins and nucleic acids by answering the following:
1) What atoms are found in proteins and what atoms are found in nucleic acids?
2) What are the monomers that make up a protein, and what are the monomers that make up a nucleic acid?
Answer: d
Explanation:
How does an object's mass affect its kinetic energy?
Answer:
As an object's mass increases, so do its kinetic energy. The same thing applies when the mass of the object decreases.
Explanation:
sometimes it is legal to reproduce a copyrighted work without the permission of the copyright holder. these circumstances are called
Fair use, refers to the conditions under which it is occasionally acceptable to create a work protected by a copyright without the owner's consent.
The fair use policy includes copyrighted content whose usage has not obtained the owner's consent. Consequently, we are able to use copyright without the owner's consent.
Not every copying and duplication is prohibited under copyright. The fair use concept, which is codified as 17 U.S.C. Section 107 of the Copyright Act of 1976 in the United States, allows for some copying and distribution without the copyright holder's consent or payment to them.
A limited amount of use of copyrighted material is permitted under the fair use doctrine of US law, which eliminates the need to first obtain consent from the copyright holder.
Learn more about copyright here
https://brainly.com/question/16774161
#SPJ4
in crosses involving linked genes, recombinant offspring result from:
Recombination can separate linked genes: Crossover, or recombination, happens when two homologous chromosomes align during meiosis and exchange a portion of genetic material.
The alleles for gene C were swapped in this case. As a result, there are two recombinant chromosomes and two non-recombinant chromosomes. During prophase I of meiosis, two distinct chromosomes trade fragments of genetic information when they cross over. Crossing over is more frequent if the related genes are located widely apart on the chromosome. Crossing across is referred to as recombination. Recombination can happen between any two genes on a chromosome; the quantity of crossing over depends on how close the genes are on the chromosome.
Learn more about chromosomes here-
https://brainly.com/question/1596925
#SPJ4
Which will most likely result in a complete fossil?
A. a zebra eaten by a pride of lions, leaving the bones for scavengers to scatter
B. hard shelled marine organisms die and are rapidly buried by sediment
C. all of the above
PLEASE HELP WILL GIVE 50 POINTS
I NEED HELP ON QUESTIONS 8-12 PLEASE HELP
Answer:
8) B
9) A
10) A
11) 2
12) 1
Explanation:
8) B
This is because there are less molecules inside the cell then outside. (Diffusion will take place and the molecules will move from outside the cell to inside the cell as there is a higher concentration of molecules outside the cell then inside the cell)
9) A
This is because there is more molecule inside the cell then outside the cell. (The molecule will move out of the cell as there is a higher concentration of molecule inside the cell then outside)
10) A
This is because in cell molecules are leaving the cell (diffusing out) Therefore it will be the removal of waste as waste will leave the cell.
11) 2
12) 1
A student constructs a Venn diagram to compare the organelles in plant and animal cells.
Venn Diagram of Plant and Animal Cells
A Venn Diagram is shown. One circle is labeled Animal only, the other circle is labeled plant only, and the overlapping section is labeled both.
Which organelle should be listed under “Animal Only” in the diagram?
nucleus
centriole
ribosome
cell wall
Centriole should be listed under “Animal Only” in the diagram.
Centrosomes and lysosomes are found in animal cells, but do not exist within plant cells. The lysosomes are the animal cell's “garbage disposal”, while in plant cells the same function takes place in vacuoles. Plant cells' vacuoles offer mechanical support. Animal cells only have little vacuoles .Hence, centrioles are absent in plant cells.
Centrioles are primarily involved in forming two structures centrosomes and cilia. Centrioles bias the position of spindle pole formation, but because spindle poles can self organize, the function of the centriole in mitosis is not obligatory.
To learn more about Centrioles ,here
brainly.com/question/909799
#SPJ1
Answer:THE ANSWER IS B
Explanation:
Examine a two-gene cross in which a mutation in herc2 is epistatic to the oca2 gene. In a cross between a blue-eyed oohh woman and a blue-eyed oohh man, what eye color will the progeny have?.
In a cross between a blue-eyed oohh woman and a blue-eyed oohh man, what eye color will the progeny have blue eye color.
According to research on the genetics of eye color, blue eyes are caused by a mutation in the neighboring, unrelated gene HERC2. The gene OCA2, which controls the production of the brown pigment melanin, is silenced by this mutation. Today, between 20 and 40 percent of Europeans have blue eyes. The quantity of functional P protein that is generated is decreased by a number of frequent changes (polymorphisms) in the OCA2 gene.People with a variation in this gene have blue eyes instead of brown because less P protein implies less melanin is present in the iris.A disturbance in the normal generation of melanin brought on by OCA2 gene mutations results in visual issues and a loss of hair, skin, and eye color. Oculocutaneous albinism type 2 refers to oculocutaneous albinism brought on by mutations in the OCA2 gene.Learn more about the Inheritance with the help of the given link:
https://brainly.com/question/14930526
#SPJ1
9. What's the transcendental world?
O A. Nature intertwined with human life
O B. Atmosphere beyond Earth
O C. The non-physical world
O D. Different biomes compromising one world
Transcendental world is the non physical world .
When something is transcendental, it's beyond ordinary, everyday experience.
Transcendental thought: what is it?In New England in the late 1820s and early 1830s, transcendentalism emerged as a philosophical movement. A fundamental idea is that nature and people are intrinsically good, and that although society and its institutions have tainted the purity of the individual, people are at their best when they are truly "self-reliant" and autonomous.
Transcendental describes anything that has to do with the spiritual, non-physical world. You could describe the time you spend in the woods hiking as a physical and a transcendental experience.
To learn more about Transcendental refer
https://brainly.com/question/10017316?
#SPJ13
which polymers are composed of amino acids?
Protein is a polymer that is composed of amino acids.
Amino acids are the building blocks of protein polymers.They are produced by animals, plants, insects, fungi, and other living things because they occur naturally. A polyamide is actually a protein.Therefore, amino acid polymers make up proteins.
One or more long chains of amino acid residues make up proteins, which are large biomolecules and macromolecules. Catalyzing metabolic reactions, replicating DNA, responding to stimuli, giving cells and organisms structure, and transporting molecules are just a few of the many roles that proteins play within organisms. The nucleotide sequence of a protein's genes determines its amino acid sequence.
know more about Amino acids here: https://brainly.com/question/2526971
#SPJ4
Hawaii's population is 1,115,274. If the growth rate of Hawaii is 1.5% then how many
people will be living there in 3 years?
29 Crore, a Hawaii population boom price may be computed via way of means of taking the modern-day populace length and subtracting the preceding populace length. Divide that quantity via way of means of the preceding length.
Multiply that via way of means of a hundred to get the percentage.In 2021, the actual GDP of Hawaii expanded via way of means of approximately 6.3 percentage in comparison to the preceding year Hawaiʻi become a internet populace loser, however now no longer frivolously so. The neighbor islands won almost 1,000 extra humans than they misplaced. But Honolulu misplaced 4,000 extra humans than it won from different states.
About 24,000 moved out of Oʻahu that yea\r — and most effective 20,000 moved in.The price of herbal growth refers back to the distinction among the variety of stay births and the variety of deaths taking place in a yr, divided via way of means of the mid-year populace of that yr, elevated via way of means of a factor (commonly 1,000).
To learn more about Hawaii population here
https://brainly.com/question/10027379
#SPJ1
Some cells of the body like neurons and brain cells do not reproduce themselves.
True
False
Answer:
True
please vote for Brainliest I hope this helps!
In a typical, mature, dividing mammalian cell, what proportion of the cell cycles is taken by mitosis?.
Answer: a very small fraction
Explanation:
Which phase of the cell cycle does a cell spend the majority of its life?
Meiosis
Interphase
Cytokinesis
Mitosis
Answer:
B interphase
Explanation:
it spends most of its time in the interphase during this it grows, replicates it's chromosomes.and prepare for cell division
Hydras may reproduce by budding. In this process, a small polyp forms on an adult hydra, and then it leaves to become a new organism. Which observation would support the conclusion that budding is an example of asexual reproduction?
a. The polyp that buds off the hydra have different DNA from the parent.
b. The polyp that buds off the hydra are significantly smaller than its parent.
c. Budding may occur in a hydra that has been completely isolated from others of its kind.
d. Budding may occur in a hydra that has been raised with many others of its kind.
Answer:the answer is C budding may occur in a hydra that has been completely isolated from others of its kind
Explanation:
You are examining evidence from a crime scene. you find an oval-shaped pod that measure 8 mm. how long would you assume the body had been decomposing, based on this evidence? four days two days one day eight days
Since you are examining evidence from a crime scene, the length of time you can assume the body had been decomposing, based on this evidence is is 8 days.
What is the Second stage of body decomposition?The second stage of human decomposition involves bodily swelling. Enzymes from the first stage start to leak and start creating lots of fumes. The gases cause the human body to expand by up to two times, giving it a bloated appearance.
Skin darkening is also brought on by the sulfur-containing chemicals that the bacteria emit. Insect activity is another possibility.
Within three to five days of death, the corpse begins to swell and blood-containing foam begins to seep from the mouth and nose.
Lastly, in 8–10 days after passing away, the body transforms from green to crimson as the blood coagulates and the abdominal organs fill with gas.
Learn more about crime scene from
https://brainly.com/question/10702774
#SPJ1
Answer:
(D) 8 days
Explanation:
The picture shows why I'm correct.
a fatty acid in which ALL carbons in the hydrocarbon tail are connected by single bonds
Which one of these matches this
A fatty acid is referred regarded as being saturated if there are only single bonds between nearby carbons in the hydrocarbon chain.
(Fatty acids are saturated with hydrogen; in a saturated fat, the carbon skeleton is connected to as many hydrogen atoms as is feasible.)
How do saturated and unsaturated fatty acids differ?In terms of the number of double bonds in the fatty acid chain, saturated and unsaturated fat differ from one another. When compared to unsaturated fats, which include at least one double bond in the fatty acid chain, saturated fats do not contain double bonds between the individual carbon atoms.
The body cannot produce omega-3 fatty acids, a particular form of fat. Because they are a necessary fat, they are required for survival. We obtain the necessary amounts of omega-3 fatty acids from the meals we eat.
The atoms in lipids are joined by non-polar covalent bonds. The hydrophobic property of lipids prevents them from combining with water. As a result of all the lipids' links between carbon and hydrogen
Learn more about fatty acid refer
https://brainly.com/question/17352723
#SPJ13
Using the strand of mRNA below along with either of the codon charts,( place the amino acids in the correct order .)PheArgAsnThrMetGluStopTyrLysSer
Answer: Met - Glu - Tyr - Asn - Thr - Lys - Phe - Arg - Ser - Stop
Explanation:
mRNA: AUG GAA UAC AAU ACU AAG UUC CGU AGU UAA
Firstly, each codon is formed by three nucleotides, that codify for an amino acid.
In the chart of the left, the first nucleotide is represented on the left column, the second is represented by the row on the top, and the third nucleotide is represented by the column on the right. In the intersection of these three, is the amino acid corresponding to the nucleotide triplet.
The right chart, has to be followed from the center to the external part, so the first circle, that is divided in four, represents the first nucleotide, while the amino acid is located in the most external part of the chart.
A glycosidic linkage is analogous to which of the following in proteins?
a. a β-pleated sheet
b. a disulfide bond
c. a peptide bond
d. an amino group
A glycosidic linkage is analogous to a peptide bond.
The carbonyl carbon of one amino acid and the -nitrogen atom of another form a peptide bond, also known as an amide bond. Instead of -amine or -carbonyl bonds, so-called isopeptide bonds are formed by amide bonds between sidechain amines or carbonyl carbons on the side chain.
Similar to the peptide bond found in proteins, a glycosidic linkage can be found in carbohydrates. As the monosaccharide units are joined together by the carbohydrate's glycosidic linkage, the amino acids in a protein are joined by peptide bonds to form a long chain, also known as a polypeptide chain, in the same way.
In addition, condensation is a common reaction in both the glycoside bond and the peptide bond. Both processes produce water as a byproduct. Peptide bonds and glycosidic bonds are therefore comparable.
Learn more about Glycosidic linkage here: https://brainly.com/question/17509592
#SPJ4
Lipid-soluble signaling molecules, such as aldosterone, cross the membranes of all cells but affect only target cells because.
The membranes of all cells but affect only target cells because of Intracellular.
What are molecules and examples?The smallest particle of any substance which can exist independently and retain the physical and chemical properties of the substance, made up of one or different elements is a molecule. Molecules are divisible into atoms further. For example, oxygen atom is represented as O, oxygen molecule is represented as O2.
How a molecule is formed?
When atoms combine by forming covalent bonds, the resulting collection of atoms is called a molecule. We can therefore say that a molecule is the simplest unit of a covalent compound.
To know about Molecules visit:
https://brainly.com/question/19922822
#SPJ1
I need help with this question!
Describe how the cycling of matter and flow of energy among organisms in an ecosystem can be expressed as a mathematical relationship.
An ecosystem is a system in which matter cycles and energy flows.
What is ecosystem?When producers engage in photosynthesis, they draw energy from the sun and store it as chemical potential energy, which is how energy enters an ecosystem.
Energy changes forms as it flows through an ecosystem, but no new energy is produced. Similar to how matter cycles throughout an environment, no new matter is created as atoms are rearranged into other molecules.
As a result, energy and matter are preserved throughout all ecosystem processes.
Therefore, An ecosystem is a system in which matter cycles and energy flows.
To learn more about ecosystem, refer to the link:
https://brainly.com/question/1673533
#SPJ1
An aircraft travels with the wind for 120 miles in 0.75 of an hour. The return trip is flown against the wind and takes exactly 1 hour.
Which system of linear equations represents x, the speed of the plane in miles per hour, and y, the speed of the wind in miles per hour? Recall the formula d = rt.
0.75(x + y) = 120
x − y = 120
0.75(x − y)= 120
x + y = 120
120(x + y) = 0.75
120(x − y) = 1
120(x − y) = 0.75
120(x + y) = 1
The system of linear equations represents x, the speed of the plane in miles per hour, and y, the speed of the wind in miles per hour is 0.75(x + y) = 120, x − y = 120. The correct option is A.
What is linear equation?A linear equation is an algebraic equation with only a constant and a first-order (linear) term of the form y=mx+b, where m is the slope and b is the y-intercept.
The above is sometimes referred to as a "linear equation of two variables," where y and x are the variables.
The total rate of an aircraft traveling with the wind is x + y. When this rate is multiplied by time, 0.75 hour, the distance is 120 miles.
The aircraft's net rate when flying against the wind, on the other hand, is x - y. It traveled the same distance when this rate was multiplied by time, 1 hour. The linear equation system that best describes these situations is,
0.75(x + y) = 120,
x − y = 120
Thus, the correct option is A.
For more details regarding linear equation, visit:
https://brainly.com/question/11897796
#SPJ1
Helpppp plaaa
what is the first chemical test would a chemist perform to help a biologists test his hypotheses about how the fish make the water to acidity
The pH can be tested by the use of a pH meter.
What is the pH test?The pH has to do with the degree of acidity or the alkalinity of a system. In this case, we are trying to see how acidic that the water is. The only way that we can know something about whether or not the fishes would make the water acidic is to test the pH of the water before and after the introduction of the fishes.
The test for the pH can be done with a portable pH meter. It should be noted that if the pH is in a range that lies between 0 and six we can say that the water is acidic.
Learn more about pH test:https://brainly.com/question/24104233
#SPJ1
