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Biology Questions
How is a cancerous cell different from a normal cell?
What is the mechanism by which the AIDS virus causes deficiency of immune system of the...
What are the various routes by which transmission of human immune deficiency virus takes place?
Which type of organ is spleen? What is its role and function in the body?
What is vaccination? What is the role of vaccines in body? Give two examples when immediate...
Serotonin (5-HT) causes a dose-dependent contraction of some blood vessels that cause migraine. Suppose the equilibrium...
Convergent evolution is illustrated by (a) rat and dog (b) bacterium and protozoan (c) starfish and...
(answer with a paragraph or a few sentences for each) 1. Structure of an osteon, coupled...
In which condition, the gene ratio remains constant for any species population? (a) sexual selection (b)...
(answer each question with a few sentences) 1. Structure and function of a chemical synapse 2....
In a random mating population in equilibrium, which one of the following brings about a change...
According to fossils discovered up to present time origin and evolution of man started from (a)...
1st life on earth was (a) cyanobacteria (b) chemohetrotrophs (c) autotrophs (d) photoautotrophs.
an outline on obesity
Which of the following are homologous organs? (a) wings of birds and locust (b) wings of...
Similarities in organism with different genotype indicates (a) microevolution (b) macroevolution (c) convergent evolution (d) divergent...
Which of the following is most important for speciation ? (a) seasonal isolation (b) reproductive isolation...
Darwin’s theory of pangenesis shows similarity with theory of inheritance of acquired characters then what shall...
Which is the most important factor for continuity of a species from evolutionary point of view?...
The diversity in the type of beaks of finches adapted to different feeding habits on the...
Which one of the following statements is correct? (a) Australopithecus is the real ancestor of modern...
The correct sequence for the manufacture of molecules/organic compounds on the primitive earth is (a) NH3,...
In the developmental history of mammalian heart, it is observed that it passes through a two...
Which of the following changes for man in the course of evolution is probably useless? (a)...
Which of the following evidences does not favour the Lamarckian concept of inheritance of acquired characters?...
Which of the following is a pair of homologous orgarrs? (a) pectoral fin of rohu and...
Correct order is (a) palaeozoic —> archaeozoic —> coenozoic (b) archaeozoic —> palaeozoic —> proterozoic (c)...
Which one of the following changes involved is irrelevant, in the evolution of man? (a) perfection...
Basic principles of embryonic development were pronounced by (a) Von Baer (b) Weismann (c) Haeckel (d)...
How have prokaryotic cells produced aerobic eukaryotic cells and photosynthetic aerobic eukaryotic cells?
How have prokaryotic cells produced aerobic eukaryotic cells and photosynthetic aerobic eukaryotic cells?
What is the most accepted hypothesis on the origin of life on earth? How does it...
How have prokaryotic cells produced aerobic eukaryotic cells and photosynthetic aerobic eukaryotic cells?
What is the spontaneous generation hypothesis?
What is the most accepted hypothesis on the origin of life on earth? How does it...
Why are recombinant DNA technology and nucleus transplantation technology still dangerous?
How did the experiments of Redi and Pasteur refute the spontaneous generation hypothesis?
What molecular biology principle is the basis for DNA fingerprinting?
Why are recombinant DNA technology and nucleus transplantation technology still dangerous?
In order to initiate protein synthesis, what conditions must be met? i. The promoter in the...
At the present level of advancement of biotechnology, what are the main techniques of genetic engineering?
What is the mathematical expression for the genetic equilibrium for genes with two alleles? Is this...
What is the mathematical expression for the genetic equilibrium for genes with two alleles? Is this...
What are the penetrance and the expressivity of a gene?
What are the penetrance and the expressivity of a gene?
Why is a balanced frequency of different alleles of a gene in a population more useful...
Why is a balanced frequency of different alleles of a gene in a population more useful...
Why is a balanced frequency of different alleles of a gene in a population more useful...
What is the mathematical expression for the genetic equilibrium for genes with two alleles? Is this...
What are some diseases or genetic abnormalities caused by dominant genes? Why are severe dominant genetic...
What is the mathematical expression for the genetic equilibrium for genes with two alleles? Is this...
What is consanguineous marriage? Why is the appearance of genetic disease more probable in the offspring...
What are some diseases or genetic abnormalities caused by dominant genes? Why are severe dominant genetic...
How are mutagenic agents related to the incidence of cancer in a population? Is cancer a...
Does every gene mutation cause an alteration in the protein the gene normally codifies?
What is the MN blood system? What is the pattern of genetic inheritance of the MN...
Is it possible investigate natural paternity, maternity or brotherhood and sisterhood using ABO blood typing?
Is ABO blood compatibility enough for the safety of blood transfusion?
match the following disease to its to determine causative agents : bacterial,viral,fungal,protozoan,prion 1. Diptheria 2.gonorrhea 3....
Is it possible investigate natural paternity, maternity or brotherhood and sisterhood using ABO blood typing?
What is the MN blood system? What is the pattern of genetic inheritance of the MN...
What type of genetic inheritance determines the ABO blood group system? What are the relations of...
What is the logic of the transfusion compatibility in the ABO blood group system?
How is serology used a s a way to study microbe?
Why is it important to determine the blood types of the donor and the recipient in...
What is the logic of the transfusion compatibility in the ABO blood group system?
Why is it important to determine the blood types of the donor and the recipient in...
1- Explain the phylogenetic relationship between hagfish and lampreys. Use the terms agnatha, cyclostomes, craniates, vertebrates...
1. Explain the formation of homologous sister chromatids (tetrads) and their impact on the genetic material...
Consider three independently assorting gene pairs, A/a, B/b, and C/c, where each demonstrates a typical dominance...
The first test performed on bacteria is a gram stain. The stain is then later used...
Hi there , I have questions to ask. What is ABC transporter? Is it right to...
1- which Ph measurement method is quantitative- litmus paper or ph paper? 2- which ph measurement...
1.What would happen to the level of ATP in the cell if aerobic respiration stops? 2.What...
3. When the base composition of double-stranded DNA from Micrococcus luteus was determined, 37.5% of the...
dische diphenylamine will be used during the experiment that tests for which macromolecule? a) Carbohydrates b)...
5. How many different mRNA molecules can specify the amino acid sequence, Met-Tyr-Arg-Thr? ________________ 6. Pedigree...
Match the ribosome binding site with its function. NOTE- one is not an actual binding site. ...
Do Small-cell lung carcinomas (SCLCs) arise from neuroectodermal cells or they arise from endodermal cell populations...
The sepia (se) eye mutation is a non-lethal recessive mutation located on chromosome III in Drosophila...
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