What is a mutagen - Study guides, Class notes & Summaries

OCR Biology A Level (Full) Test Questions With All Correct Answers Which factors affect evolution? - CORRECT ANSWER Mutation, natural selection, sexual selection, gene flow and genetic drift What is a mutation? - CORRECT ANSWER Change in the sequence of bases in DNA What are the three ways the base sequence can be altered? - CORRECT ANSWER Substitution, deletion and insertion What is the term for a mutation where only one nucleotide is affected? - COR...

Fundamental Molecular Biology Exam Questions and Answers Define mutation - Answer-mutations are changes in the genetic material of a cell (or virus) Define gene - Answer-A gene is a genomic sequence (DNA or RNA) directly encoding functional product molecules, either RNA or protein What is a spontaneous mutation? - Answer-a naturally occurring mutation in the absence of a mutagen How often to spontaneous mutations occur? - Answer-3 new mutations per 10^8 base pairs per generation. 200 ne...

OCR Biology A Level EXAM WITH QUESTIONS AND ANSWERS Change in the sequence of bases in DNA - CORRECT ANSW-What is a mutation? Substitution, deletion and insertion - CORRECT ANSWWhat are the three ways the base sequence can be altered? Point mutation - CORRECT ANSW-What is the term for a mutation where only one nucleotide is affected? degenerate code new amino acid is similar amino acid not involved with proteins function - CORRECT ANSW-What are the causes of...

If a silk protein gene from a side is attached to a mammary gland promoter and inserted into the first cell of a goat embryo, which is correct? - correct answer the silk protein will be produced in only the mammary cell in the adult goat Order from smallest to largest: nucleotide gene, exon, skin cell, and genome - correct answer nucleotide, exon, gene, genome, and skin cell approximately what percentage of cancer causing mutations are newly acquired - correct answer 90% If a mu...

DNA vs RNA - ANS RNA contains ribose instead of deoxyribose, RNA contains uracil instead of thymine like DNA, RNA is single-stranded rather than double-stranded like DNA, RNA is smaller than DNA What are the four nucleotide bases for DNA and RNA? - ANS DNA: adenine, cytosine, guanine, thymine RNA: adenine, cytosine, guanine, uracil How do the bases pair in a DNA strand? - ANS A, T. C, G How do bases pair in a RNA strand? - ANS A, U. C, G What ...

REHS Exam Questions and Answers Latest Updated 2024/2025 (Graded A+) A factor or agent which increases the risk of cancer is known as a a. teratogen b. mutagen c. carcinogen d. fomite - carcinogen 2. The four major causes of death among all age groups of Americans include all of the following except. a. homicide b. accidents c. malignant neoplasms d. heart disease - homicide 3. In recent years, the largest number of rabies cases were associated with a. skunks b. bats c. dogs d. r...

IVY TECH APHY 101 Exam 1 (1-4) Questions and Answers 100% Pass Three metabolic pathways are involved in the breakdown of glucose to CO2, H2O, and ATP. Of the three, which one occurs in the cytoplasm? true Which of the nitrogenous bases is part of DNA, but not RNA? thymine Which phase of mitotic cell division is represented by this picture? prophase A DNA strand with a base sequence of ACTTCGCATG, when replicated, would yield a newly formed strand of the same base sequence. false Which of th...

Which of the following is true about disinfection? A)Bacterial endospores may not be killed on an object B)Fungal spores may not be killed on an object C)Disinfection reduces the number of pathogenic organisms on or in an object D)Disinfection helps reduce the threat of disease E)All of these choices - -E)All of these choices What is the difference between a disinfectant and an antiseptic? A)Disinfectants are typically applied to living tissue and antiseptics are typically applied ...

(they are ways of distributing pathogens) - What do septicemia, viremia, and toxemia have in common and I think the answer is none of the above 100 pathogens is enough to cause disease in 50% of the host population ID50 - measurement that is determined by the # of microbes required to give 50% of a population the disease - Pathogen X has an ID50 of 100, what does that mean Acquisition of resistance - Spontaneous mutation - occurs when a mutation causes a bacteria to become resistant to a p...

RNA Test 74 Questions with Verified Answers RNA contains the sugar a. ribose. b. deoxyribose. c. glucose. d. lactose. - CORRECT ANSWER a Unlike DNA, RNA contains a. adenine. b. uracil. c. phosphate groups. d. thymine. - CORRECT ANSWER b Which of the following are found in both DNA and RNA? a. ribose, phosphate groups, and adenine b. deoxyribose, phosphate groups, and guanine c. phosphate groups, guanine, and cytosine d. phosphate groups, guanine, and thymine - CORRECT ANSWER...