BIOLOGY HIGH SCHOOL

A scientist conducted one trial of experiment and got unexpected results. How can the scientist increase confidence in the results? A). by repeating the experiment several times B). by charging the experimental procedure C). by asking other scientists what they think about the results D). by modifying the results so they are close to the expected results

Answers

Answer 1
Answer:

By repeating an experiment many times, scientists increase confidence in the results. So, the correct option is (A).

What is an experiment?

An experiment is defined as a procedure which is carried out to support or disprove a hypothesis. It determines the efficacy or potential of something previously unusable. It provides insight into cause and effect by demonstrating what results when a particular factor is manipulated.

An experiment is defined as a type of empirical study that involves manipulation of an independent variable, measurement of a dependent variable, and control of extraneous variables. This extraneous variable is any variable other than the independent and dependent variables.

The best approach when conducting a scientific experiment is to test repeatedly and make sure the experiment can be repeated.

Thus, by repeating an experiment many times, scientists increase confidence in the results. So, the correct option is (A).

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Answer 2
Answer:

Answer:

The answer is A by repeating the experiment several times

Explanation:

i did it on edu

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Which is an example of a predator-prey relationship?a. The relationship between a duck and a pond of water. b. The relationship between a lion and a zebra. c. The relationship between a bee and a flower. d. The relationship between a hen and a rooster
Which of the following describes a positive feedback loop?When blood sugar is low, the body sends hormones that increase blood sugar. When the body senses that the heart rate is very high, it secretes hormones that decrease the heart rate. When a pregnant woman begins to go into labor, the body sends hormones that increase the intensity of the labor contractions. When someone is exercising intensely, the body sends hormones that increase oxygen supply for cellular respiration.
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A substance that speeds up the rate of a chemical reaction is calledA. a catalyst

B. a substrate.

C. an enzyme.

D. Both A and C

Answers

A substance that speeds up the rate of a chemical reaction is called A.a catalyst 

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Which biomolecule forms the cytoskeleton in cells? A Lipids
B Carbohydrates
С Proteins
D Nucleic Acids

Answers

The cytoskeleton is the internal structure that maintains the shape of the cell and is made up of proteins that polymerize into filamentous structures.

What are proteins?

They are biomolecules made up of structural units called amino acids.

The cytoskeleton is a protein-based system found in cells that provides internal support and is constructed of three main types of filaments (proteins), theseare microtubules, microfilaments, and intermediate filaments.

Therefore, we can conclude that the cytoskeleton is the internal structure that maintains the shape of the cell and is made up of proteins that polymerize into filamentous structures.

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Answer:

microtubules. actin filaments and intermediate filaments

Tell whether the statement is TRUE or FALSE. Even though nearly 200 nations have adopted the Universal Declaration of Human Rights, in many nations these rights are frequently abused.

Answers

It is a true statement that even though nearly 200 nations have adopted the Universal Declaration of Human Rights, in many nations theserights are frequently abused. The correct option among the two options that are given in the question is the first option. I hope the answer has helped you.

the answer is True on e2020

Louis pasteur proposed...........a. the concept of atomic weight
b. the germ theory of disease.
c. a theory of electricity ..D.the theory of evolution

Answers

The answer is b. the germ theory of disease.

Louis Pasteur proposed that some diseases are caused by germs in the XIX century.
The concept of atomic weight was proposed by John Dalton. Benjamin Franklin proposed a simple theory of electricity, which was later compounded by Charles du Fay. The theory of evolution was proposed by Charles Darwin.

Match the following carbohydrate molecules with the class of molecule that they belong to: Molecules;(I) Glucose; (II) Starch; (III) Sucrose
Classes: A) Polysaccharides B) Disaccharides C) Monosaccharides
A) I-A; II-B; III-C
B) I-B; II-A; III-C
C) I-C; II-A; III-B
D) I-C; II-B; III-A

Answers

Carbohydrates are classified according to the number of saccharides they contain. Monosaccharide are called as such for containing only one saccharide like glucose. Disaccharides for containing two saccharide units for instance sucrose which is formed from two glucose molecules. Laslty, polysaccharides for carbohydrates containing more than two saccharide units an example is starch. Thus, the answer is D.

The balanced chemical equation for cellular respiration is below. How does this equation represent the law of conservation of matter-that matter cannot be created or destroyed?C⁶H¹²0⁶ + 60² 》》》6C0² + 6H²0 + heat + ATP

A.) The inputs are different than the outputs.
B.) The atoms of hydrogen, oxygen, and carbon are rearranged.
C.) There are equal numbers of atoms on each side of the equation.
D.) The number of molecules is the same on either side of the equation.
​

Answers

There are equal numbers of atoms on each side of the equation. The correct answer is C.

Cellular respiration and the balanced chemical equation

The balanced chemical equation for cellular respiration, C6H12O6 + 6O2 → 6CO2 + 6H2O + heat + ATP, exemplifies the law of conservation of matter. This law asserts that matter cannot be created or destroyed, only transformed. In this equation, equal numbers of atoms are present on both sides, symbolizing this principle.

While the reactants, glucose (C6H12O6) and oxygen (O2), undergo rearrangement, their total mass remains constant. Carbon, hydrogen, and oxygen atoms are transformed into carbon dioxide (6CO2) and water (6H2O) while releasing energy in the form of heat and ATP.

This equation showcases the fundamental scientific concept of matter conservation in chemical reactions.

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Answer:

C

Explanation:

same number of carbon

hydrogen

and

oxygen
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