What type of mutation is represented by the following sequence? Original: 123456 Mutated: 154326
A. Breakage
B. Deletion
C. Insertion
D. Inversion
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.
An inversion mutation is represented in the sequence 1 5 4 3 2 6. An inversion error is a type of mutation where an entire sequence of DNA is reversed. In this case, 2 3 4 5 has been reversed to 5 4 3 2.
Breakage, choice A, in a gene can mess up its function entirely or lead to a translocation of genetic information. Choice B, deletion, is when a section of DNA is omitted or lost.
Choice C, Insertion, is when an extra base pair is added to a DNA sequence. Deletions and insertions can lead to a frameshift effect where entire sequences are thrown off because one nucleotide is wrong.
This could result in coding for the wrong amino acid and non-functioning proteins.
Therefore, the Correct Answer is D.
More Questions on TEAS 7 Science Practice Test 1
Question 1:
Homeostasis is defined as:
A. Ability of human beings to keep body weight within normal limits
B. Maintenance of a constant external temperature inside a room
C. Ingestion of enough food to keep hunger pains from developing
D. Tendency of the body to maintain a stable environment
The Correct Answer is D.Homeostatic mechanisms are involuntary actions by organs, glands, tissues and cells to maintain balance within the body. If a function is disrupted the body will readjust in an attempt to maintain balance. During periods of starvation the body will break down glucose reserves in order to maintain normal glucose levels.
Question 2:
Enzymes catalyze biochemical reactions by ________
A. Lowering the potential energy of the products
B. Separating inhibitors from products
C. Forming a complex with the products
D. Lowering the activation energy of the reaction
The Correct Answer is D.Enzymes act as catalysts for biochemical reactions. A catalyst is not consumed in a reaction, but rather lowers the activation energy for that reaction. The potential energy of the substrate and the product remain the same, but the activation energy-the energy needed to make the reaction progress can be lowered with the help of an enzyme.
Question 3:
Which of the following conclusions is supported by the data from this survey?
A. Dally screen usage in the United States decreases with age
B. Daily screen usage in the United States, increases with age.
C. In the United States, most people use screens more than 3 but less than13 hours a day
D. In the United States, people over 75 generally don't use screens.
The Correct Answer is C.The percentage of respondents that indicated average screen usage between 4-12 hours per day is (628 +650+389) ÷ 2, 307 ≈ 0.723 or 72.3% This is indeed a significant majority of the responses and would be a reasonable conclusion. The highest screen usage is in the middle two groups with both the younger and older groups indicating less screen usage, so the daily usage neither increases nor decreases with age. While the oldest group shows the least usage per day, the survey data indicates that some of the Individuals over 75 do indeed use screens.
Question 4:
How many tissue layers does the uterus have?
A. One
B. Two
C. Three
D. Four
The Correct Answer is C.The uterus has three layers. The inner layer is called the endometrium. The middle layer is called the myometrium. The outer layer of the uterus is called the serosa or perimetrium.
Question 5:
Which of the following anatomical terms is NOT part of the knee?
A. Medial collateral ligament
B. Patella
C. Lateral malleolus
D. Lateral meniscus
The Correct Answer is C.The term "lateral malleolus" refers to the bony prominence on the outer side of the ankle.
It is part of the ankle joint, not the knee joint. The other options, such as the medial collateral ligament, patella, and lateral meniscus, are all associated with the knee joint.
Question 6:
Which of the following is NOT true concerning correlation?
A. Correlation can show the relationship between variables.
B. Correlation can show cause and effect.
C. Correlation can show linear relationships.
D. Correlation can show nonlinear relationships.
The Correct Answer is B.Correlations may be positive or negative and linear or nonlinear. However, correlation does not determine cause and effect. Correlation does not necessarily mean causation.
Question 7:
Where is the scapula in relation to the olecranon?
A. Distal
B. Lateral
C. Ventral
D. Superior
The Correct Answer is D.The scapula, commonly known as the shoulder blade, is above the olecranon, commonly known as the elbow. Conversely, the olecranon is distal or inferior to the scapula.
Question 8:
Where is the gastrocnemius vein in relation to the femoral vein?
A. Lateral
B. Distal
C. Superior
D. Ventral
The Correct Answer is B.The gastrocnemius vein is found in the calf. The femoral vein is found in the proximal anterior thighs/pelvis.
Since the gastrocnemius vein is found below the femoral vein it is distal or inferior to the femoral vessel.
Question 9:
Which of the following is a carbohydrate?
A. Cellulose
B. Hemoglobin
C. Estrogen
D. ATP
The Correct Answer is A.Cellulose is a complex carbohydrate that composes the better part of the cell wall.
Hemoglobin is a protein and is found in red blood cells. Adenosine triphosphate (ATP) is a compound used by living organisms to store and use energy. Estrogen is a steroid hormone that stimulates the development of female sex characteristics.
Question 10:
Which of the following statements concerning the states of matter is NOT true?
A. Plasmas are high-temperature collections of ions and free electrons.
B. Solids are the least compressible due to the more rigid positions of the particles.
C. Gases have no definite volume and expand to fill their containers
D. Liquids have no definite shape and no definite volume.
The Correct Answer is D.Liquids have no definite shape, but they do have a definite volume. While the particles of liquids move more freely than those in solids, they do maintain a definite volume.