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
For those aiming to excel in their ATI TEAS test and secure admission into their desired nursing program, ExamGates offers an invaluable resource. Our platform features practice questions meticulously crafted by tutors who have previously aced the exam themselves. With ExamGates, you can access content that is 100% relevant to the test, accompanied by vivid images and illustrations. Additionally, our platform provides comprehensive explanations for both correct and incorrect answers, empowering you to fully grasp the material and optimize your study efforts. Take the first step towards your nursing aspirations with ExamGates today.
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.
Therefore, the Correct Answer is B.
More Questions on TEAS 7 Science Exam 5
Question 1:
A slice of apple left on a table slowly goes brown due to an enzymatic reaction. Dipping the apple slice in lemon juice prevents it from browning Which of the following best explains this result?
A. Lemon juice has enzymes which reverse the browning reaction
B. Lemon juice has a pH which inactivates the enzymes
C. Lemon juice functions to bleach the brown material
D. Lemon juice functions to dilute the brown material
The Correct Answer is B.Browning of the apple surface is due to the action of the enzyme polyphenol oxidase. Lemon juice is acidic and lowers the pH of the apple's surface. This inactivates the enzyme polyphenol oxidase, which works best at a neutral pH. This in turn reduces the browning action on the apple.
Question 2:
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.
Question 3:
In order to determine the effects of energy drinks on women's running speed, researchers gave 300 women an energy drink and then recorded the time it took each of them to run 2 miles. After collecting the results, researchers concluded that energy drinks increase the speed of running in
Which of the following further tests would best help to support this conclusion?
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
The Correct Answer is B.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.
Question 4:
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.
Question 5:
Which of the following endocrine organs in the diagram below is involved in regulating milk production following childbirth?
A. Pituitary gland
B. Thyroid gland
C. Adrenal glands
D. Ovaries
The Correct Answer is A.The pituitary gland produces prolactin, which regulates milk production
Question 6:
Which of the following molecules contains the fewest covalent bonds?
A. Chlorine molecule
B. Ammonia molecule
C. Methane molecule
D. Water molecule
The Correct Answer is A.A chlorine molecule contains the fewest covalent bonds among the options provided. It consists of two chlorine atoms bonded together by a single covalent bond. Compared with the other options, ammonia has three covalent bonds, methane has 4 while water has 2.
Question 7:
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.
Question 8:
Which of the following cells transfers pigment granules to adjacent epidermal cells?
A. Melanocytes
B. Merkel cells
C. Langerhans cells
D. Keratinocytes
The Correct Answer is A.Melanocytes are specialized skin cells that produce melanin, which is the protective skin-darkening pigment. They are found mainly in the epidermis, though they occur elsewhere, such as in the hair.
Question 9:
Which of the following hormones regulates blood calcium levels?
A. Parathyroid hormone
B. Growth hormone
C. Norepinephrine
D. Melatonin
The Correct Answer is A.The parathyroid hormone (PTH) from the parathyroid glands is important in serum calcium regulation. It increases blood calcium levels by stimulating osteoclasts to break down bone and release calcium into the bloodstream. PTH also enhances the absorption of calcium from the intestines and the kidneys.
Question 10:
Which of the following correctly orders structures from simple to complex?
A. Organs, tissues, cells, atoms
B. Cell, tissues, atoms, organs
C. Atoms, organs, tissues, cells
D. Atoms, cells, tissues, organs
The Correct Answer is D.Rationale
Atoms are the smallest and most basic units of matter, and they can combine to form molecules. Cells are the basic units of life, and they are made of molecules. Tissues are groups of cells that work together to perform a specific function, such as muscle tissue or nerve tissue. Organs are collections of tissues that form a larger structure.