Explain why IgM cannot activate complement by itself.

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A: The relative fitness of bacteria is defined as the susceptibility of bacteria to adjust, grow and re...

Q: What is mutation? Distinguish between a gene mutation and a chromosomal mutation?

A: The genome is made up of one to several long DNA molecules, and mutations on these molecules can hap...

Q: Insulin secretion is essential in metabolism. What type ofmolecule is insulin? What structure secret...

A: Metabolism is the total chemical reactions that occur in a cell.  

Q: Why is O+ compatible with O+, AB+, A+, B+?

A: Introduction : Landsteiner studied the properties of blood cells and the proteins on the surface of ...

Q: What are the major differences between male and female institutions and how are correctional manager...

A: Introduction A culture is a collection of a group's beliefs and customs, while society is a collecti...

Q: Compare the mechanisms and accuracy of auditory localizationof a sound source in a human, an owl, an...

A: The ability to analyse the direction from which a sound is originating is called sound localization....

Q: Explain the four premises of evolution by natural selection as proposed by Charles Darwin.

A: The most widely accepted theory that explains the evolutionary process is Charles Darwin's theory of...

Q: Which of the following illustrates the regulative nature of early mouse development? (a) the mouse e...

A: The mouse has been used as a model organism to study the development of mammals.

Q: What do you think would happen next if larger predators were introduced into this low-predation habi...

A: Predator are animal that eats other animals. there are different types of predators larger predators...

Q: Describe five important differences between class I and class II MHC proteins

A:

Q: Read and understand the following statement and explain it. 1. The global nature of environmental pr...

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Q: How do eukaryotic and prokaryotic RNA polymerases compare?   Eukaryotic and prokaryotic RNA polymer...

A: Prokaryotes have only one RNA Polymerase, while eukaryotes have three (RNA Polymerases I, which tran...

Q: if the biuret reagent was allowed to stand for 1 hour, what would the effect on the accuracy of the ...

A: * biuret test is also called as Piotrowski test used to detect presence of peptide bonds. *In presen...

Q: make a diagram illustrating the evolution of a domesticated crop (preferably one that is cultivated ...

A: Crops has been cultivated from ancient time. Corn is one of the major cultivated crop in different p...

Q: Summarize the evidence for evolution obtained from the fossil record.

A: Evolution is the change that takes place in a species over several generations or over a span of tim...

Q: Compare the PATHWAYS, and ENERGY INPUTS and OUTPUTS of Aerobic Respiration and Fermentation in livin...

A: Aerobic respiration take place in the presence of oxygen however fermentation take place in the abse...

Q: Which of the following RNAS is the product of transcription?

A: Transcription is the process of making an RNA copy of a gene sequence

Q: Compare and contrast the nervous system organization inarthropods and vertebrates. What are their fu...

A: The nervous system is the body's primary governing, regulating, and communication system. It is the ...

Q: 1. Compare and contrast the following systems in the squid, perch, earthworm, and frog. a. Digestive...

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Q: In the US, many farmers regularly use the herbicide glyphosate to keep their fields free from weeds....

A: Weeds are unwanted plants that grow in fields of particular crops.

Q: The typical difference in pH between the intermembrane space and the pH of the mitochondrial matrix ...

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Q: Are the healthcare concerns, infections, and nosocomial infections discussed for genera Enterococcus...

A: Microbes, which are tiny and nearly invisible, have had a huge influence on society since the beginn...

Q: Post-transcriptional modifications in eukaryotic RNAS A. addition of CCA at the 5'end of the TRNA fo...

A: Answer :- Option (D) is correct. - Addition of CCA at the 5'end of the tRNA for binding with amino a...

Q: Name three neural pathways one might expect to lead into the hypothalamus that would result in chang...

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Q: Mammals have brains that are more complex than those offish and amphibians, particularly in terms of...

A: The brain is the mass of nerve tissue at the front end of an organism. The brain integrates sensory ...

Q: Adult Karner blue butterflies: A Feed on a variety of nectar producing flowers. B Do not feed. C ...

A: Anatomy, which reveals that evolutionary ties may be proven through homologous structures, and molec...

Q: How is the mechanism for a nuclear-encoded protein when is targeted to the thylakoid membrane

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Q: nucleotides - adenine, guanine, cytosine, and thymine?

A: 1.  DNA is made up of long chain polymer of polynucleotide. A nucleotide consist of nitrogenous base...

Q: reduction potential

A:

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Q: The buzzing of the alarm clock woke Halie. She stretched, yawned, and started to salivate as she sme...

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Q: MULTIPLE CHOICE Question 6 Which of the following are ways that EDCS can cause problems in the human...

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Q: Distinguish among maternal effect genes, segmentation genes, and homeotic genes in Drosophila.

A: The pattern along the eventual head to tail (antero-posterior) axis of the flies Drosophila melanoga...

Q: Some transcription factors need to bind to the DNA directly and others to the enzyme to recruit it t...

A: This question is based on transcription process in the cell.

Q: Describe the different potentials for regeneration of the three types of adult muscle after injury

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Q: What can you do with a closed ecosystem in a container's habitat to create more biotic niches?

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Q: Briefly explain how molecular biology and developmental biology provide insights into the evolutiona...

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A: Retinal Pigment Epithelium The RPE is a polygonal cell layer that makes up the outermost lining of t...

Q: The area of the skin that makes up the form and pattern of the ridges on the surfaces is called the:...

A: Introduction The skin, which is made up of water, protein, lipids, and minerals, is the body's large...

Q: Nascent form of the mRNA A. undergoes splicing only after capping B. is also called hnRNA C. is poly...

A:

Q: If you are asked to synthesize a cell using only five parts, what parts will you include to ensure t...

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Q: When acetyl-CoA containing radioactively labeled carbon atoms is fed to cells, the CO, produced is n...

A: Krebs cycle is the cyclic process, occurring in the mitochondrial matrix of living cells. where Acet...

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A: Introduction The epithelium is a type of body tissue which is consists of cells that form membranes,...

Q: What lines of evidence support the principle of nuclear equivalence?

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Q: All are stages in transcription EXCEPT: A chain termination. B DNase I activity on RNA polymerase/DN...

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Immunology

Immunology is the division of science involved with the immune reactions occurring in living organisms. The organisms are accustomed to evolving internal defense mechanisms to evade the invasion of microbial pathogens. Diverse cells are connected with stimulating the immune responses, which produce inhospitable conditions to the microbes prompting their lysis and thus inhibits the multiplication of the pathogens. The immune system can distinguish the pathogens through the aid of cellular intercommunication and launch responses to destroy them.