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Showing posts from May, 2025

Multiple Choice Questions (MCQs) on Diabetes Mellitus: Pathogenesis, Diagnosis and Treatment

                                        MCQs on Diabetes mellitus 1) Diabetes mellitus is a disorder characterized by hyperglycemia.  Which of the following is not the common characteristic features of type 2 diabetes mellitus ? a) Impaired insulin secretion b) Increased Insulin resistance  c) Diabetic ketoacidosis d) Excessive hepatic glucose production 2) Which of the following are the characteristic features of type 1 diabetes mellitus? a) Type 1 diabetes is caused by an absolute deficiency of insulin. b) Type 1 diabetes is associated with the autoimmune destruction of beta cells.  c) Patients with  uncontrolled type 1 diabetes present with diabetic ketoacidosis d) All of the above   3) Which of the following serum measurements are not used for the diagnosis of diabetes mellitus? a) Fasting blood glucose d) Postprandial blood glucose  c) Insulin ...

Molecular Biology: MCQs on DNA synthesis (Replication)

Multiple Choice Questions Set Molecular Biology: DNA synthesis (Replication) DNA replication is a fundamental process in which DNA synthesis occurs, leading to the formation of a new DNA molecule. It is a highly regulated process that ensures the faithful transmission of genetic information from one generation to the next. During DNA replication, the DNA double helix is unwound, and each strand serves as a template for the synthesis of a new complementary strand. The enzyme responsible for DNA synthesis is DNA polymerase, which catalyzes the addition of nucleotides to the growing DNA chain. The process of DNA replication involves a number of key proteins, including helicases, primases, and DNA ligases. 1) In most organisms, DNA is a genetic material that stores the information template for the synthesis of RNA and subsequently protein.  Name the processes a, b, c represented in the figure : 2) In some viruses, RNA serves as the storage of genetic materials and DNA is syn...

MCQs on Enterobacteriaceae, gut flora

Enteric bacteria/ Gut flora -  E. coli, Salmonella spp, and Shigella spp 1) A large family of enteric bacteria is present as normal flora in the intestines of humans and other mammals. Which of the following is less likely to be found as the normal flora of the intestine?   a) Escherichia spp b) Salmonella spp c) Staphylococcus spp d) Proteus spp 2) Which of the following bacteria is not a clinically important enterobacteriaceae? a) E.coli b) Streptococcus  pyogenes c) Salmonella typhi d) Proteus mirabilis 3) All are the important general characteristics of enteric bacteria, EXCEPT ? a) Aerobic and facultatively anaerobic b) Non-spore forming c) Grow in media with bile salts d) Do not produce nitrates e) Ferment glucose f) Most of them are catalase positive and oxidase negative 4) Enteric bacteria are mainly classified based on their ability to ferment various sugars including lactose.  Which of the following bacteria is a non-lactose fermen...