A. Repeat the same experiment, using 300 men
B. Repeat the experiment giving half of the women water and the other half the energy drink
C. Repeat the experiment giving the women two different energy drinks
D. Repeat the experiment, having half of the women run 2 miles and the other half run 5 miles
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Conducting the experiment with half the women taking water and the other half taking an energy drink creates a study and experimental group, which can allow for comparison and conclusion. The researchers can compare the effects of the energy drink directly with a baseline, and this helps to establish a cause-and-effect relationship and provides stronger evidence to support their conclusion.
Therefore, the Correct Answer is B.
Which of the following contains a human's hereditary information?
A. chromatin
B. Histones
C. ATP
D. Plasmids
The Correct Answer is A.Rationale
Chromatin refers to a complex of DNA and proteins in human cells. This material is packaged by histones to make up the chromosomes. The chromosomes then contain genetic information that is heritable.
The "gray matter of the brain is largely made up of which of the following?
A. Neuron cell bodies
B. Meninges
C. Neuron cell axons
D. Corpus callosum
The Correct Answer is A.The gray matter of the brain primarily consists of neuron cell bodies, along with dendrites, glial cells, and unmyelinated axons. It appears gray because it lacks the white fatty myelin sheath that covers many nerve fibers.
Which of the following pathways best represents the expected flow of blood from the human heart to an organ?
A. Blood pumped from the heart first enters arterioles that then merge to form arteries that deliver blood to the organ
B. Blood pumped from the heart first enters arteries that then narrow to form arterioles that deliver blood to capillaries of the organ
C. Blood pumped from the heart first enters versus that then narrow to form venules that deliver blood to arteries to the organ
D. Blood pumped from the heart first enters arteries that then narrow to form arterioles that deliver blood to capillaries
The Correct Answer is B.From the heart, blood flows through major arteries, which then branch to give rise to arterioles, which then divide into capillaries that deliver blood to the target organ.
Which of the following body systems breaks down proteins into amino acids?
A. Digestive
B. Excretory
C. Circulatory
D. Endocrine
The Correct Answer is A.The digestive system breaks down complex food substances into small and less complex absorbable compounds. Proteins, for instance, are broken down to constituent amino acids through a digestion process that combines mastication and enzymatic breakdown.
Which of the following is classified as a noninfectious disease?
A. Psoriasis
B. Brucellosis
C. Olkunginys
D. Dengue
The Correct Answer is A.Psoriasis is a chronic skin condition that causes red, scaly patches on the skin. It is not contagious, and it is not caused by any microorganism. It is believed to be an autoimmune disorder where the immune system attacks healthy skin cells.
Which of the following organs removes nitrogenous waste from the body?
A. Large Intestines
B. Liver
C. Kidneys
D. Gall Bladder
The Correct Answer is C.The kidneys are the primary organs involved in the excretion of nitrogenous wastes. Nitrogenous wastes are mostly products of protein metabolism in the liver. One of the common nitrogenous waste products is urea, which is excreted through the kidneys.
Experiments cannot validate hypotheses, only falsify them
The statement above can be restated in which of the following ways?
A. Until disproved, an exploration for an observation is valid
B. A hypothesis that has not been falsified remains provisional
C. Certain concepts cannot be subjected to direct experimentation
D. Proving a hypothesis exempt from further testing
The Correct Answer is B.This means that a hypothesis is considered valid until it is disproved by experimental evidence. However, even if a hypothesis has not been falsified, it is still considered provisional and subject to further testing and scrutiny.
Which of the following tissues lines the interior structures of the heart?
A. Epicardium
B. Pericardium
C. Myocardium
D. Endocardium
The Correct Answer is D.The endocardium lines the interior structures of the heart. It is a thin, innermost layer of the heart wall that lines the heart chambers and valves. It is composed of subendocardial connective tissue and endothelial cells that are continuous with blood vessel endothelium.
Which of the following structures is present in both prokaryotic and eukaryotic cells
A. Chloroplast
B. Cell membrane
C. Golgi apparatus
D. Endoplasmic reticulum
The Correct Answer is B.Both prokaryotic and eukaryotic cells have a cell membrane. The cell membrane is a barrier that surrounds the cell and separates its internal environment from the external environment.
Which of the following respiratory structures is affected by a disease that disrupts gas exchange, such as emphysema?
A. Trachea
B. Secondary branch
C. Primary bronchi
D. Alveoli
The Correct Answer is D.