ATI TEAS 7
ATI TEAS 7 Version 1 Science Questions
Extract:
Question 1 of 5
What is essential for new scientific findings to be published?
Correct Answer: B
Rationale: For new scientific findings to be published, it is essential for other scientists to validate or disapprove of the findings. This validation process, known as peer review, ensures the credibility and reliability of the research. Peer review allows for critical evaluation, verification, and identification of any potential errors or biases in the study, thereby upholding the integrity and quality of scientific knowledge. Without this validation by peers, the scientific community cannot confidently accept the findings as accurate and trustworthy, making the peer review process a crucial step in the dissemination of scientific knowledge.
Extract:
Question 2 of 5
Which of the following is used to determine a person's DNA sequence?
Correct Answer: D
Rationale: Genes are the correct choice for determining a person's DNA sequence. Genes carry genetic information that dictates various traits and characteristics in individuals. A person's unique DNA sequence is determined by the specific arrangement of nucleotides within their genes. Scientists can analyze genes to decode the DNA sequence that represents an individual's genetic composition.
Extract:
Question 3 of 5
Which of the following structures is correctly associated with its immune function?
Correct Answer: C
Rationale: The spleen is responsible for filtering blood and removing germs, making option C the correct association of structure and immune function.
Extract:
Question 4 of 5
If a portion of a strand of DNA bases reads 5' AGCTAGCGT 3', what would the sequence of bases on the complementary strand read?
Correct Answer: C
Rationale: To determine the sequence of bases on the complementary DNA strand, you must apply the base pairing rules: adenine (A) pairs with thymine (T) and cytosine (C) pairs with guanine (G). The given original sequence is 5' AGCTAGCGT 3'. Consequently, the complementary strand will read 3' TCGATCGCA 5'. Each base on one strand corresponds with its complementary base on the other strand, forming a sequence that complements the original one.
Question 5 of 5
What is the function of sodium bicarbonate released by the pancreas?
Correct Answer: A
Rationale: The correct answer is A because sodium bicarbonate released by the pancreas functions by neutralizing the acidity of chyme in the small intestine. This action helps to create a more alkaline environment, which is crucial for the activity of pancreatic enzymes and the absorption of nutrients. Option B is incorrect as sodium bicarbonate itself does not stimulate a protease to digest carbonates. Option C is incorrect as sodium bicarbonate does not inhibit peristalsis; instead, it aids in digestion. Option D is incorrect as sodium bicarbonate does not directly stimulate the protease but rather helps in maintaining the optimal pH for enzyme activity.