Which of the following is the term given to the sequence of nucleotides that contains the information to make a specific protein molecule?
A. Locus
B. Promoter
C. Operator
D. Gene
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A gene is a segment of DNA that codes for a specific protein or polypeptide.
Therefore, the Correct Answer is D.
More Questions on TEAS 7 Science Exam 5
Question 1:
An experienced mountaineer decides to climb Mount Everest, taking the same route in the same season and with similar materials and equipment used in a fatal 1924 expedition Which of the following is the scientific purpose of such a climb?
A. To measure the oxygen levels at high elevation
B. To assess why the earlier expedition failed
C. To show that modem technology makes climbing safer
D. To identify routes that can be explored in future climbs
The Correct Answer is B.The experienced mountain climber is replicating the conditions of the past expedition to understand why that earlier attempt was unsuccessful.
Question 2:
Which of the following structures drains oxygen-depleted blood from the kidneys?
A. Renal artery
B. Urethra
C. Ureter
D. Renal Vein
The Correct Answer is D.The renal vein drains deoxygenated blood from the kidneys to the inferior vena cava.
Question 3:
Which of the following pathways best represents the expected flow of blood from the human heart to an organ?
A. Blood pumped from the heart first enters arterioles that then merge to form arteries that deliver blood to the organ
B. Blood pumped from the heart first enters arteries that then narrow to form arterioles that deliver blood to capillaries of the organ
C. Blood pumped from the heart first enters versus that then narrow to form venules that deliver blood to arteries to the organ
D. Blood pumped from the heart first enters arteries that then narrow to form arterioles that deliver blood to capillaries
The Correct Answer is B.From the heart, blood flows through major arteries, which then branch to give rise to arterioles, which then divide into capillaries that deliver blood to the target organ.
Question 4:
Which of the following distinguishes endocrine and exocrine glands from another?
A. The presence or absence of ducts
B. The effect their secretions have on the target cells
C. The biochemistry of their secretions
D. The presence or absence of nerve innervation
The Correct Answer is A.Exocrine glands secrete their products into ducts that carry them to the target organs. In contrast, endocrine glands secrete their products directly into the bloodstream, which carries them to target cells throughout the body.
Question 5:
A study found two processes. Process A and Process B, are to be correlated.
Which of the following is true for these processes?
A. The study indicates that Process A causes Process B
B. The study cannot indicate whether Process A and B have a negative relationship
C. The study does not indicate a causal relationship between the processes.
D. The study cannot indicate whether Process A and B have a positive relationship
The Correct Answer is C.Correlation does not imply causation. Even if two processes are found to be correlated, it does not necessarily mean that one causes the other. It could be that they are both influenced by a third factor, or the correlation could be coincidental. Therefore, the study does not indicate a causal relationship between the processes.
Question 6:
Parasitic worm infestation is hypothesized to be damaging to the host. However, scientists have recently discovered that worm infestation can relieve the effects of certain autoimmune disorders, in which of the following ways should the hypothesis be modified, given the new findings?
A. Lack of worm infestations is the cause of some autoimmune disorders.
B. Worm infestation reduces the severity of certain autoimmune disorders
C. Worm infestation prevents the body from immune malfunction
D. Worm infestations exacerbate the body's immune reactions
The Correct Answer is B.The new findings can be used to generate a hypothesis to reflect the beneficial aspect of worm infestations in certain autoimmune disorders, indicating that they can help reduce the severity of the condition.
Question 7:
Which of the following types of cells stimulates other immune cells to attack and destroy foreign agents?
A. Cytotoxic T-cells
B. Plasma cells
C. Natural killer cells
D. Helper T-Cells
The Correct Answer is D.Helper T cells are important cells that stimulate the action of other immune cells. For instance, they not only help activate B cells to secrete antibodies and macrophages to destroy ingested microbes, but they also help activate cytotoxic T cells to kill infected target cells.
Question 8:
Which of the following parts of the eukaryotic cell is responsible for making ATP?
A. Lysosome
B. Nucleus
C. Centrioles
D. Mitochondria
The Correct Answer is D.ATP is produced by a series of reactions that occur in the mitochondria. The mitochondria have a double membrane structure, with an inner membrane that is folded into cristae. These cristae contain the enzymes and proteins that are involved in the process of cellular respiration, which converts glucose and oxygen into ATP and carbon dioxide.
Question 9:
Which of the following endocrine organs in the diagram below is involved in regulating milk production following childbirth?
A. Pituitary gland
B. Thyroid gland
C. Adrenal glands
D. Ovaries
The Correct Answer is A.The pituitary gland produces prolactin, which regulates milk production
Question 10:
Which of the following atoms is most likely to become a cation?
A. Oxygen, atomic number 8
B. Fluorine, atomic number 19
C. Helium, atomic number 2
D. Fluorine, atomic number 9
The Correct Answer is D.Fluorine has a high electronegativity, and therefore, it has a strong attraction for electrons and tends to gain electrons to form anions. Therefore, it is more likely to become a cation by losing an electron.