TEAS Science Practice Test #1
An unknown element is found to contain 45 protons and an atomic mass of 64, what is its atomic number?
The number of protons in an atom’s nucleus is also the atomic number of the atom. In this case, we are told that there are 45 protons present and that the atomic mass is 64; however, when looking for the atomic number, we do not need the atomic mass. Consequently, the atomic number is 45.
The square above is based on the eye color of two parents, one of whom has brown eyes and carries the recessive gene for green eyes (a). What is the probability that a biological child of these parents will have brown eyes?
In the Punnett Square pictured, two of the children have brown eyes(A) and carry the recessive green gene(a) = (Aa), while two of the children have green eyes (aa). There is a 50% chance these parents will produce offspring with brown eyes (Aa).
The spleen functions are part of the _____ system. Which of the following completes the sentence above?
The spleen is part of the lymphatic system. Like the lymph nodes, it acts as a blood filter.
Which of the following is an example of deductive reasoning?
Deductive reasoning starts with basic premises that are assumed to be correct, and draws a specific logical conclusion. It often follows the logic: A ➞ B, C ➞ A, therefore C ➞ B. (C) might be tempting, but is an example of inductive reasoning. (A) and (B) are logically flawed.
Which of the following is a possible cause of herniation of discs?
Disc herniation occurs when the inner core of a disc in the spine leaks out through the outer portion of the disc. This type of spinal injury is usually caused by an injury to the back and/or spine. Whiplash suffered from a minor impact could potentially cause a herniated disc.
Which of the following is a characteristic of the autonomic nervous system?
The somatic nervous system controls voluntary actions, while the autonomic nervous system functions primarily below the level of consciousness, to control functions such as digestion, heart rate, respiratory rate, perspiration, salivation, swallowing, and breathing. The central nervous system consists of the spinal cord and brain.
During photosynthesis, which two compounds are combined to create the output of glucose and oxygen?
During photosynthesis, water and carbon dioxide are absorbed by the plant and converted to glucose and oxygen.
Which of the following is true about the frog?
Since the frog is inside the triangle, and the key indicates the triangle represents amphibians, it is logical to conclude that the frog is a type of amphibian.
Which statement can be inferred about amphibians?
While all the amphibians are located inside the “circle” of vertebrates, there is nothing to indicate that ALL vertebrates are amphibians.