Molecular biology question bank. Exam Questions on Molecular Biology 2022-10-27
Molecular biology question bank
A molecular biology question bank is a collection of questions and corresponding answers on the subject of molecular biology, which is the study of the structure, function, and interactions of biological molecules in cells. These question banks can be a useful resource for students, researchers, and educators as they can help to test and improve understanding of the various concepts and principles of molecular biology.
Molecular biology is a diverse and rapidly evolving field that encompasses a wide range of topics, including DNA structure and function, protein synthesis, regulation of gene expression, and genetic engineering. These topics are essential for understanding the fundamental processes that occur within cells and how they contribute to the overall function and behavior of organisms.
A molecular biology question bank can be an excellent tool for reinforcing knowledge and identifying areas where further study is needed. For example, a student studying for an exam may use a question bank to practice answering questions on various topics, such as DNA replication or protein folding. This can help to identify areas of weakness and allow the student to focus their study efforts on those specific topics.
Researchers and educators may also find molecular biology question banks useful as a way to assess the knowledge and understanding of their students or research associates. By presenting a series of questions on a particular topic, it is possible to quickly assess the level of understanding of the group and identify any areas that may need further clarification or discussion.
In conclusion, a molecular biology question bank is a valuable resource for students, researchers, and educators as it provides a convenient way to test and improve understanding of the various concepts and principles of molecular biology. It can be a useful tool for reinforcing knowledge and identifying areas where further study is needed, and can be used by educators to assess the knowledge and understanding of their students or research associates.
Technique used in Molecular Biology
Answer: The properties of genetic code are: a Triplet code: The genetic code is a triplet code. Soon after infection, the cultures were gently agitated in a blender to separate the adhering protein coats of the virus from the bacterial cells. Describe the regulation of lac-operon in E. The repressor protein is an allosteric protein with 2 specific sites. Utilization of lactose in E. The term cistron has also been used as a synonym for gene.
Introns Removal from RNA by Splicing
The lac operon occurs in Escherichia coli at ca. Ans: This hypothesis accounts for the observed pattern of degeneracy in the third base of a codon. Ans: Bacteria possess many enzymes whose rate of synthesis depends on the availability of external food molecules. To improve tools for data analysis. However, upon binding an inducer a molecule related to lactose the repressor loses this Ability and permits the production of enzymes.
Exam Questions on Molecular Biology
This results in the growing of polypeptide chain referred to as chain elongation. These two phage preparations were allowed to infect the bacterial cells separately. This technique was developed by Alec Jeffreys and his associates. Helps in medical diagnosis and treatment. If live rough strain bacteria R are injected the mouse does not die.
What is the advantage a large surface area to volume ratio for a cell? Explain the different steps involved in translation. Answer: Ribose sugar and adenine nitrogen base. The phenomenon of overlapping genes maximizes the coding capacity of a genome and can also provide a means for the regulation of expression of genes. Explain the post trancriptional events in eukaryotes. Ans: The term recon was coined by S.
Molecular Biology 2nd Edition Clark Test Bank
Thus, when lactose is absent the lac operon lactose operon repressor prevents synthesis of enzymes that metabolize lactose. Ans: While one proceeds from lower to higher eukaryotes, the odd thing in the mitochondrial genome is that it gets smaller, e. Answer: 51 to 31 Question 29. The split genes have also been regarded as interrupted genes. This process occurs in the cytoplasm of the cell both in prokaryotes and eukaryotes. Determination of real father of children, under paternity disputes.
Test Bank for Molecular Biology Principles and Practice 1E Cox
Most of the nuclear structural genes in higher eucaryotes are split genes. Comparison: Comparison of two genetic finger prints with great care can provide information about the degree of similarities or differences. The constant distance between the two strands is 20A°. Ans: It occurs in human mitochondria. Ans: A mutator gene or mutator is designated as must within which certain mutations cause an increase in the spontaneous mutation rate in other genes, e.
2nd PUC Biology Question Bank Chapter 6 Molecular Basis of Inheritance
Give the initiation codon for protein synthesis. This inactive repressor becomes detached from the operator region. Name the initiator triplet cordon of protein synthesis? What controls induction and repression? These redundant codons for the same amino acids are called degenerate codons and this property is called degeneracy. Ans: It is because more than one codon can code for the same amino acid. The mutant alleles may differ from the wild type, e. Now 50s ribosomal sub-unit combines with 30s ribosomal unit forming 70s ribosome. It has the structural: promoter-operator lac Zr-lac Y-lac A.
Cell & Molecular Biology
A cruciform structure in which of two strands each forms hairpins by intra-strand hydrogen bonding. Genetic material in certain plants and animals and takes part in protein synthesis. Define the terms a Transcription b Translation. This mechanism was proposed by Watson and crick and experimentally proved by Meselson and Stahl. Some other mutator genes in E.
Briefly explain the process of Translation during protein synthesis? Also called non coding strand. Answer: a Adenine b Guanine Question 3. If a mixture of heat killed smooth bacteria S and live rough bacteria R is injected into the mice it dies. What did this experiment prove? These are produced by Z,Y and a genes respectively. Answer: a Cytosine b Thymine Question 4. It is sometimes reasonable to assume that highly conserved protein like globin and cytochorme c can be used as a molecular clock to measure how long the species have been diverging from each other. Soon after chain termination, newly formed polypeptide chain undergoes processing and attains specific structure.
A linear structure with inter-strand hydrogen bonding, e. The regulatory genes work to control the expression of structural genes. The promoter and terminator flank the structural gene in a transcription unit. List any four salient features of human genome project. Collection of sample: Sample like blood, semen, hair, saliva or any other tissue even in the dried state are collected. The base and sugar are joined by glycosidic or N-ribosidic bond and the sugar and phosphate are joined by ester bond. Group the following as nitrogenous bases and nucleosides: Adenine, Cytidine, Thymine, Guanosine, Uracil, and Cytosine.