1. Commpare antigenic shift to antigenic drift. Why does antigenic shift prevent the production of a single universally effective vaccine for influenza control?

Q: Why are chemical stains required for visualizing cells and tissues with the basic light microscope?

A: Cell staining is a technique that is used to better visualize cells and cell components under a micr...

Q: A 5mL sample diluted 1:1 with trypan blue is counted using a hemocytometer. A total of 325 viable ce...

A: Haemocytometer is a counting chamber device use to count the cells. 

Q: ectotherms

A: Ectotherms that live in regions where temperatures fluctuate seasonally avoid extremes by taking she...

Q: 9. What term best describes the following reaction in glycolysis? 1,3 diphosphoglycerate + ADP → 3-p...

A: INTRODUCTION Answer of question 9 is given below.

Q: Describe briefly how MALDI and two-dimensional poly acrylamide gel electrophoresis could be used to ...

A: The term proteomics is associated with biology field involving the study of proteins. This branch of...

Q: Why might the longevity of an ISC be left to chance?

A: There are a number of factors that affect longevity and these are: Gender Genetics Crime rates. Hyg...

Q: Mr. Fede runs an experiment to see if eating fatty foods raises cholesterol He uses two groups of ra...

A: Fats : These are one of the macromolecule . They are major and dense source of energy and they play ...

Q: The similarities between the bone structure of a human hand and a cats paw suggest what? a. a commo...

A: Both human and cats are vertebrates that possess vertebral column. The evolution of different organi...

Q: 4. In Drosophila melanogaster the wild-type eye colour is dark red. A pure-breeding mutant strain wi...

A: Inheritance or heredity is the passing-on of one trait form the parents to the progeny by either ase...

Q: what blood types would have the best and worst odds of finding a donor?

A: *Types of Blood groups are : A type of blood group(A positive and A negative) B type of blood group...

Q: Why did DNA, rather than RNA, evolve to be the carrier of genetic information in cells?

A: This is one of the primary dissimilarities between DNA and RNA. DNA (Deoxyribonucleic acid) is the n...

Q: 1. If a flower is unable to be pollinated from the pollen of the same species, than this is a a. Mec...

A: Temporal isolation  It is a type of reproduction isolation mechanism among sexual organisms in which...

Q: This question pertains to frogs  Females arriving at the breeding pond may be encountered by males ...

A: Amplexus is a mating behavior shown by species of anurans (frogs), newts, and horseshoe crabs. The m...

Q: Which of these is not a driver of sympatric speciation_ a. Reduction of gene flow in a population b....

A:

Q: How do the cells become organized into functional organs?

A: Introduction Life starts from a single cell called Zygote. A zygote is formed by the fusion of the m...

Q: The enzyme that is released when raw potato is ground up is It acts upon producing and

A: Enzyme  A protein molecule that help in metabolic reaction in organisms.

Q: In Figure 4-6, why does the diagram not show meiosesin which two crossovers occur between the same t...

A: Crossing over is a process that takes place only and only between the chromosomes that are homologou...

Q: Choose the sentence that best relates to Translocation Group of answer choices A: A chromosomal muta...

A: The correct option is A - a chromosomal mutation where genetic material is switched between two chro...

Q: The two strands in a molecule of DNA are held together by peptide bonds covalent bonds hydrogen bon...

A: The DNA double helix is held together by two types of bonds, covalent and hydrogen. Covalent bonds o...

Q: Match each stage of demographic transition with its correct description. Match Term Definition Stage...

A:

Q: Explain the role of redox reactions in electron transfer chains

A: The oxidation of reduced coenzymes into their oxidized forms is known as terminal oxidation because ...

Q: Regarding meiosis: select all correct statements: Homologous chromosomes are segregated from one ano...

A: Meiosis is a cell division process in which a single cell splits twice to produce four cells, each c...

Q: SYNZIPS are a-helices that can be used in synthetic biology to create coiled-coil interactions betwe...

A: Secondary structure of protein describes the special arrangement of its main chain atoms, without co...

Q: Match each hormone with its general effects on metabolism: promotes glycogenesis (storing glucose) i...

A: Glycogenesis is promoted by INSULIN.  Insulin also promotes lipogenesis. Insulin secreats when blood...

Q: How would you be able to determine if an angiosperm plant is a monocot or a eudicot? Seed leaves Le...

A: In angiosperms or flowering plants the pollen grains and ovules are developed in specialised structu...

Q: Which group of the following is probably the least likely to have the harmful Tay Sachs alleles toda...

A: Tay Sachs disease or GM2 gangliosidosis occurs when a child inherits a  mutation in the HEXA gene fr...

Q: Illustrate the Yanofsky’s model ?

A: Yanofsky lab research focuses on Arabidopsis thaliana genes involved in fruit development.    

Q: Which of the following is/are too small to have been discovered before the invention of the electron...

A: Microorganisms, cells, big molecules, biopsy samples, metals, and crystals are among the biological ...

Q: Which statement would the author Jared Diamond likely disagree with? O Human efforts to isolate grou...

A: Both, the questions are same, we are answering only one question. "Natural selection" occurs when in...

Q: what is triple code

A: The genetic code refers to the progression of data from genes to proteins. The triple code is named ...

Q: A female Australian shepherd with droopy ears (dd) and grey spotting (ss) is mated to a male dog wit...

A: Answer : the moat likely genotype of the male parent dog will be :  b)  DdSS.      Here the puppies ...

Q: he Lionfish from the South Pacific Ocean has become a resident of the Gulf of Mexico. Analyze how hu...

A: The lionfish is a carnivorous predator fish that is native to the Indo-Pacific region but it has now...

Q: Multiple Alleles-Predicting Blood Types of Offspring Human blood type is determined by multiple alle...

A: A gene's forms are referred to as alleles. A gene usually has two alleles: recessive and dominant, a...

Q: If 12-ounce cans of soft drink contain 150 kilocalories from added sugars and are the only source of...

A: questions 2 & 3 are subjective so according to Bartley guideline we cant answer that

Q: concerns have been raised about the safety of GMOs. These are all concerns that have been raised EXC...

A: *Genetically modified organisms means a plant or animal that their DNA altered by using genetic engi...

Q: Detailed introduction of artificial photosynthesis?

A: Introduction: Photosynthesis is the process of preparing food in the presence of sunlight and chloro...

Q: Part 2. You perform the cross of the two EeHh rabbits and get the offspring shown below Wild type (n...

A: The chi-square test is the test done to know whether our data fits in one of the Mendelian ratios. I...

Q: Human culture______________________.

A: Culture is defined as the characteristics and knowledge of a specific group of people, encompassing ...

Q: What is the formula for interference? How are the “expected” frequencies calculated in the coefficie...

A: The process of determining the locations of genes on chromosomes is known as gene mapping. Linkage a...

Q: The A locus and the D locus are so tightly linked that norecombination is ever observed between them...

A: Introduction  Genes can be linked or autonomous. When they segregate during the time of formation, t...

Q: Changes in allelic frequency that leads to novel populations is an example of

A: Changes in allelic frequency that leads to novel populations is an example of microevolution.

Q: Fertilization does not take place in a moment of passion. It occurs four to five days later. Maybe i...

A: Fertilization is the process of combining haploid gametes (sperm and egg) to generate a diploid zygo...

Q: How much fat (in grams) would the body have to burn to produce the daily minimum requirement of 40 k...

A: Answer :- Option (C) is correct. - approx 22 to 23 kg of fat.

Q: 2. What are the factors that lead to phenotypic variation.

A: Introduction The physical appearance of an organism such as colour, height, which occurs as a result...

Q: Anurans Most anurans breed in water and rainfall stimulates breeding in many species. Ponds may att...

A: Behavioral adaptations include all the actions or things that help the organisms do to survive in ch...

Q: Write a short note on Therapeutic Lifestyle Change ?

A: The term lifestyle can be referred to as a specific way of living that is utilized by the human bein...

Q: How is understanding the external and internal anatomy help in promoting healthy lifestyle through m...

A: Anatomy is the branch of biology that deals with the structure of organisms and their constituents. ...

Q: Give the purpose of the following in one sentence only.  Specimens are sectioned thinly Staining of...

A: According to the question, we have to provide the purpose of the following in one sentence only for ...

Q: The dermis is SUPERFICAL to the epidermis. The medulla is DEEP to the vortex of the kidney.

A: The skin is the body's outermost layer of protection. The integumentary system of the body is made u...

Q: 1. How do decomposers keep us alive? Provide an expounded arguments. 2. Suppose you have a balanced ...

A: Introduction  Decomposers are organisms that break down dead or decaying species; they perform decom...

Respiratory Infections

Respiratory infections are infectious diseases of the respiratory tract that are mostly caused by bacteria and viruses. They cause infections of the throat, sinuses, airway path, and lungs. Respiratory infections are typically divided into two types: upper tract respiratory infection and lower tract respiratory infection.