ATI TEAS 7
ATI TEAS 7 Science Practice Test Questions
Question 1 of 5
What type of chemical bond connects the oxygen and hydrogen atoms in a molecule of water?
Correct Answer: D
Rationale: The correct answer is D, Covalent bond. Covalent bonds are formed between oxygen and hydrogen atoms in a water molecule. In a water molecule, each hydrogen atom forms a covalent bond with the oxygen atom, sharing electrons to achieve a stable configuration. Static bond (choice
A) and Aquatic bond (choice
B) are not valid types of chemical bonds. Ionic bond (choice
C) involves the transfer of electrons between atoms of different electronegativities, which is not the case between oxygen and hydrogen in a water molecule.
Question 2 of 5
Two nursing students will be completing a scientific experiment measuring the mass of chewed gum after one-minute chewing increments. Which lab equipment will the students most likely use?
Correct Answer: A
Rationale: The correct answer is A: Triple beam balance. A triple beam balance is the most suitable lab equipment for measuring mass accurately, which is necessary for this experiment. An anemometer measures wind speed, a hot plate is used for heating substances, and a microscope is used for magnifying objects, none of which are relevant to measuring the mass of chewed gum.
Question 3 of 5
In the suburban neighborhood of Northwoods, there has been a large population of deer, and residents have complained about them eating flowers and garden plants. What would be a logical explanation for the large increase in the deer population over the last two seasons?
Correct Answer: B
Rationale: The correct answer is B because a decrease in natural predators can lead to an increase in the deer population as there are fewer predators to control their numbers. This explanation aligns with the situation described in the question, where the deer population has increased, causing issues for residents.
Choice A is incorrect because an increase in food sources would not directly explain the increase in the deer population.
Choice C is incorrect as it introduces a new factor of migration which is not mentioned in the question.
Choice D is incorrect as an increase in hunting licenses sold would likely have the opposite effect on the deer population.
Question 4 of 5
Which of the following stimulates adaptive immunity?
Correct Answer: C
Rationale: The correct answer is C: Prions. Prions are infectious proteins that can stimulate an adaptive immune response by triggering the production of specific antibodies. Peptides are fragments of proteins and can be processed and presented by antigen-presenting cells to activate T cells, which play a role in adaptive immunity. Phagocytes, such as macrophages, are part of the innate immune system and are involved in engulfing and destroying pathogens, but they do not directly stimulate adaptive immunity. Platelets are primarily involved in blood clotting and are not directly related to stimulating adaptive immunity.
Question 5 of 5
Which of the following is NOT part of the circulatory system?
Correct Answer: A
Rationale: The correct answer is A: Kidneys. The kidneys are part of the urinary system, responsible for filtering waste and maintaining fluid balance in the body. In the circulatory system, the heart pumps blood, blood carries oxygen and nutrients, and blood vessels transport blood throughout the body.
Choices B, C, and D are all components of the circulatory system, making the kidneys the correct choice as it belongs to the urinary system.