The first option is correct. The control group is kept in an unchanging environment.
In a research experiment, the control group is another research group that is made up of individuals that resembles the experimental group but are used to make comparisons with the experiment group.
The participants in the control group are not treated like those in the experiment group. Their environment and condition is unchanged. They do not receive the treatments that are given to the experiment group.
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Answer:
option 1
Explanation:
step by step
B. a hemisphere
C. a pressure gradient
D. an air mass
Answer:
D. an air mass
Explanation:
igneous
metamorphic
sedimentary
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Answer:
Metamorphic, :b
Explanation:
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Answer:
yes its important because...
Explanation:
Water is an essential feature of homeostasis in an organism. Water increases the volume of blood, which affects blood pressure and heart rate. Water dissolves gases and allow for efficient exchange and transport of oxygen and carbon dioxide. Water can be excreted, so it carries toxins that have been made water-soluble out of the body.
The Two substance that has low entropy are diamond and graphite while the other two chemical/substance that has high entropy are Noble gases(helium, neon, etc) and oxygen.
Generally, entropy measures the disorder or randomness in a system. High entropy implies randomness or high disorder while low entropy indicates orderliness.High entropy system, more energy is lost to the environment/surroundings.
Examples of chemicals or substances with high and low entropy are listed below
Low entropy
1.Diamond: This is a carbon crystalline substance. The makeup follows a well-structured pattern. The particles are tightly packed thereby giving them a low entropy value. This means they are well ordered.
2.Graphite: This is another carbon substance but they have higher entropy than diamond but generally possess a low entropy.
High entropy
Generally, gaseous substances possess high entropy, and this includes
1. Nobles gases(helium, argon, Neon, etc); These gases when placed in a closed system they exhibit high entropy. They act disorderly. They move randomly and tend to occupy every space available in the system.
2. Oxygen gas: This is another gaseous substance that exhibits disorderliness when placed in a closed system.
The arrangement of the particles and cohesive forces holding the individual particles of the substance together play a large role in determining its entropy.
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Here are two examples:
Low entropy: -A carbon crystal structure at a temperature near absolute zero,
-A chunk of ice has low entropy
High entropy:- A box filled with two elements in their gaseous state, both of which are noble gases.
- Burning wood illustrates an increase in entropy heated very high temperature, with the gas "not very dense".
The entropy of a chemical system depends on its energy and its multiplicity, or how many different ways its atoms and molecules can be arranged. By adding new arrangements or energy, you increase entropy. A diamond, for example, has low entropy because the crystal structure fixes its atoms in place. If you smash the diamond, entropy increases because the original, single crystal becomes hundreds of tiny pieces that can be rearranged in many ways.
Burning wood illustrates an increase in entropy as The wood starts as a single, solid object. Fire consumes the wood, releasing energy along with carbon dioxide and water vapor, and leaving a pile of ashes. The atoms in the vapors and gases vibrate energetically, spreading out in an ever-expanding cloud. Dissolving salt in water is another example of increasing entropy; the salt begins as fixed crystals, and the water splits away the sodium and chlorine atoms in the salt into separate ions, moving freely with water molecules. A chunk of ice has low entropy because its molecules are frozen in place. Add heat energy and entropy increases. The ice turns to water, and its molecules agitate like popcorn in a popper.
b. The four nitrogenous bases found in it are A, T, C and G.
c. The two strands are parallel.
d. The two strands are stabilized by hydrogen bonds and base stacking interactions.
Answer:
Which of the following is FALSE regarding the DNA double helix?
The two strands are parallel.
Explanation:
DNA strands are anti-parallel to one another which gives room for their complimentary factor to come in play.
The false statement is that the two strands of the DNA double helix are parallel. They are actually antiparallel, running in opposite directions.
The false statement regarding the DNA double helix is c. The two strands are parallel.
The correct statement is that the two strands of the DNA double helix are antiparallel. This means that one strand runs in the 5' to 3' direction, while the other strand runs in the 3' to 5' direction.
Complementary base pairing, involving the nitrogenous bases A, T, C, and G, is an essential characteristic of the DNA double helix. The two strands are held together by hydrogen bonds between complementary base pairs, as well as by base stacking interactions that result from the hydrophobic interactions between adjacent base pairs.
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