ATI TEAS 7
ATI TEAS 7 Version 1 Science Questions
Extract:
Question 1 of 5
What summarizes a change that occurs as solids transition into liquids?
Correct Answer: A
Rationale: The correct answer is A. When solids transition into liquids, particles become less ordered. In a solid state, particles are arranged in a fixed, orderly pattern due to strong intermolecular forces. As the solid transitions into a liquid, these forces weaken, allowing the particles more freedom of movement. Consequently, the particles become less ordered in a liquid compared to a solid, where they have more mobility and are not bound in a fixed structure.
Extract:
Question 2 of 5
Which of the following is the process in which an ovarian follicle matures and releases a reproductive egg?
Correct Answer: B
Rationale: Ovulation is the correct answer as it is the process where an ovarian follicle matures and releases a reproductive egg. Menstruation refers to the shedding of the uterine lining, fertilization is the union of sperm and egg, and oogenesis is the formation of female gametes. Ovulation is a crucial step in the reproductive cycle as it allows for the release of a mature egg from the ovary, which can then potentially be fertilized during its journey through the fallopian tube. Understanding these definitions is essential for comprehending the sequence of events in the female reproductive system.
Question 3 of 5
Which of the following substances is excreted by the sweat glands in response to the breakdown of proteins and the formation of ammonia?
Correct Answer: C
Rationale: The correct answer is Urea. Sweat glands excrete urea in response to the breakdown of proteins and the formation of ammonia. Urea is a waste product formed in the liver by the breakdown of amino acids. It is then excreted by the kidneys in urine and by sweat glands through perspiration. Urea plays a vital role in the excretory process by helping eliminate nitrogenous wastes from the body and maintaining proper physiological balance.
Question 4 of 5
What is the atomic number of an atom that has 12 protons and 12 neutrons?
Correct Answer: C
Rationale: The atomic number of an element is determined by the number of protons in its nucleus. In this case, the atom has 12 protons, which directly corresponds to its atomic number. Neutrons have no impact on the atomic number; they contribute to the atomic mass. The atomic number uniquely identifies an element based on the number of protons in its nucleus. Therefore, the correct answer is 12, as it represents the number of protons in the nucleus and defines the element, regardless of the presence of neutrons.
Question 5 of 5
What is the function of a totipotent cell?
Correct Answer: B
Rationale: Totipotent cells possess the remarkable ability to differentiate into any cell type in the body, encompassing both embryonic and extraembryonic cell varieties. This quality is crucial in the early stages of embryonic development, facilitating the generation of all cell lineages and tissues. Unlike pluripotent or multipotent cells, totipotent cells exhibit the most extensive differentiation potential, playing a vital role in the organism's development from a single fertilized egg cell.