Which of the following is a type of genetic mutation that involves the insertion or deletion of one or more nucleotides in a DNA sequence?
A. Silent mutation
B. Nonsense mutation
C. Frameshift mutation
D. Missense mutation
A frameshift mutation is a type of genetic mutation that involves the insertion or deletion of one or more nucleotides in a DNA sequence. This can cause a shift in the reading frame of the genetic code, resulting in a change in the amino acid sequence of the resulting protein. Frameshift mutations can have significant effects on the function of the protein and can lead to genetic disorders or diseases.
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Therefore, the Correct Answer is C.
More Questions on TEAS 7 Science
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Q #1: What is the difference between innate and adaptive immunity?
A. Innate immunity is present at birth while adaptive immunity is acquired after exposure to pathogens.
B. Innate immunity is specific to particular pathogens while adaptive immunity is nonspecific.
C. Innate immunity is mediated by antibodies while adaptive immunity is mediated by T cells.
D. Innate immunity provides long-term protection while adaptive immunity provides only short-term protection.
Answer Explanation
Innate immunity and adaptive immunity are two arms of the immune system that work together to protect the body from pathogens. Innate immunity is the first line of defense and is present at birth. It includes physical and chemical barriers such as the skin, mucous membranes, and antimicrobial peptides, as well as cells such as macrophages and natural killer cells that can quickly recognize and atack pathogens. Innate immunity is nonspecific, meaning it responds to a wide variety of pathogens in a similar way.
Adaptive immunity, on the other hand, is acquired after exposure to pathogens. It involves the production of antibodies and activation of T cells, which are specific to particular pathogens. Adaptive immunity takes longer to develop than innate immunity, but it provides a more specific and targeted response to pathogens. Once the adaptive immune system has been activated against a particular pathogen, it can provide long-term protection against future infections with that pathogen.
Option b) is incorrect because innate immunity is nonspecific while adaptive immunity is specific. Option c) is incorrect because antibodies are a part of adaptive immunity while T cells can be a part of both innate and adaptive immunity. Option d) is incorrect because adaptive immunity can provide long-term protection, while innate immunity provides immediate but short-lived protection.
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Q #2: Which of the following is a type of genetic mutation that involves the insertion or deletion of one or more nucleotides in a DNA sequence?
A. Silent mutation
B. Nonsense mutation
C. Frameshift mutation
D. Missense mutation
Answer Explanation
A frameshift mutation is a type of genetic mutation that involves the insertion or deletion of one or more nucleotides in a DNA sequence. This can cause a shift in the reading frame of the genetic code, resulting in a change in the amino acid sequence of the resulting protein. Frameshift mutations can have significant effects on the function of the protein and can lead to genetic disorders or diseases.
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Q #3: Which of the following describes the function of ligaments?
A. Ligaments attach skeletal muscles to bone
B. Ligaments attach two bones
C. Ligaments attach bones to tendons
D. Ligaments attach skeletal muscles to tendons
Answer Explanation
Ligaments are tough bands of fibrous tissue that connect two bones together in a joint. They provide stability and support to the joint, preventing excessive movement and helping to maintain proper alignment of the bones.
