Which is a common cause for the production of oncogenes?   a. defective ion channel proteins   b. defects in DNA polymerase c. viral infection d. dephosphorylation of cyclin-dependent protein kinases e)exposure to infrared radiation

Q: Which of the following would produce the fastest response to G-protein activation? а. cyclic GMP…

A: Secondary messenger/second messenger is the molecule, which is produced upon the activation of any…

Q: CO2 dissolved in the bloodstream does what to pH?

A: Introduction CO2 is transported through the blood by three methods. It is dissolved directly in the…

Q: Please answer the following regaring infections diseases/viruses: a) Describe a chain of infection…

A: VIRUS = A microscopic infectious agent that requires host machinery for replication, i.e. it can…

Q: GROUP 6 Write an essay on the role of magnesium in tolerance of plant species to water and heat…

A: Magnesium is the central core of the chlorophyll molecule in plant tissue. Thus, if Mg is deficient,…

Q: Explain the process of DNA replication.

A: Introduction Deoxyribonucleic acid (DNA) is a polymer made up of two polynucleotide chains that coil…

Q: The ancestors of extant tetrapods first evolved the ability to live out of water over 350 million…

A: Tetrapods are vertebrates with four limbs or appendages that resemble legs. These animals are…

Q: What is aneuploidy? Differentiate between aneuploidy and polyploidy.

A: Due to chromosome non-disjunction, aneuploidy occurs when one or more chromosomes are gained or lost…

Q: 1. The group of Leonor and Junior conducted an experiment about the fragmentation of planaria.…

A: In this, the given paragraph includes the experimental process and the observations of…

Q: TRUE or FALSE: Type 2 diabetes is a ketosis-resistant, adult-onset diabetes that always require…

A: Intensive insulin therapy is a type of diabetes treatment that aims to keep your blood sugar levels…

Q: Q.8. What is recombination? Mention its applications with reference to genetic engineering.

A: In genetics recombination is the main mechanism by which variations are introduced into the…

Q: Question 28 The Canada Health Act specifies five main principles: Public administration,…

A: Canada Health Act expects that the regions and domains broaden medicinally important emergency…

Q: Which of the following statements describes one reason that plant oils are generally healthier for…

A: Fats and oils are generally lipids. It composed of glycerol and fatty acids. Fats of animal origin…

Q: Disinfectant Concentration Growth after time of exposure (minutes) Control 5 minutes 10 minutes…

A: * Disinfectant is a chemical substance that inactivates or to destroy the microorganisms that are…

Q: Intermediate filaments help protect animal cells from mechanical stress because - Filaments remain…

A: Introduction A protein filament is a long strand of monomers of protein found in hair, muscle, and…

Q: KARYOTYPE #9 (IIEMI ID L MIE I DA ED

A:

Q: true or false 2.) When the crop is badly lodged, mechanical harvesters are virtually useless and…

A: Lodged crops-Crops that are bent to ground level make them very difficult to harvest and reduce…

Q: a. Give one reason why a country with a high HIV infection rate may have better quality healthcare…

A: Acquired immunodeficiency syndrome (AIDS) is a caused by a virus named HIV (human immunodeficiency…

Q: In the fasted state, glucagon is released from the pancreas to decrease blood glucose levels and…

A: The alpha cells of the pancreas are responsible for secreting the hormone, glucagon. The beta cells…

Q: The principle of Acquired Characteristics states that O species change because there is variation…

A: The characteristics in an organism is controlled by its genetic element that is the DNA. That DNA…

Q: List the characteristics of fossils.

A: The following are some of the characteristics of fossilised organisms:

Q: A particular specie of animal has a carrying capacity of K and a growth rate of r. From an initial…

A: Population refers to the number of individuals in a particular area.  When the resources are…

Q: Defining occupational health and safety and its importance in the work environment.

A: occupational health deals with all aspects of health and safety in the workplace and has a strong…

Q: What is a recombinant DNA vaccine? List two such vaccines. State their advantages.

A: Plasmids, which are small circular pieces of DNA, are used in the production of recombinant DNA…

Q: Need help on questions 3 and 4, please. Drop-down answer choices are images. Canine Scott Syndrome…

A: 3. TMEM16F splice site mutation segregated with the CSS trait and TMEM16F protein was undetectable…

Q: When the body becomes dehydrated, the posterior pituitary gland secretes  vasopressin which signals…

A: Vassopressin is mainly secreted when there is need to conserve water and is responsible for the…

Q: Match the following structures with their functions a. blood clotting b. matrix of blood and…

A: Human body is a complex machine required in many processes to function efficiently. To keep these…

Q: In Figure 17-28, what would be the consequence of acrossover between the centromere and locus A?

A: The exchange of chromosomal segments between nonsister chromatids in meiosis is known as crossing…

Q: .Define autosome, hemizygous, homozygous, and heterozygous?

A: Autosome- All chromosomes, with the exception of the sex chromosomes, are referred to as Autosomes.…

Q: Explain briefly why the derivation of protein substitution matrices introduces a form of circular…

A: Introduction Proteins are large biomolecules and macromolecules that are made up of one or more long…

Q: What are the two components of a two-component system? What is the role of each component?

A: The communication between cells occurs by cell signalling mechanisms. Different organisms use…

Q: la) with examples, distinguish between. Continuous and discontinuous variation. ii) Dominance and co…

A: Genetics is a branch of science that studies genes, genetic diversity, and inheritance in living…

Q: Characteristics of Life / Living Things of a dandelion.

A: Dandelion  It is a species of plant and belong to the phylum of angiosperms.

Q: 13) Draw a graph representing the changes in membrane potential across the axonal membrane before,…

A: The electric signals that flow down the dendrites to form a nerve impulse or an action potential are…

Q: What is a negative inducible operon?

A: Regulated genes can be switched on/off depending on cell's metabolic needs. Operon It is a group of…

Q: A misaligned crossover between two homologous chromosomes usually results in:

A: Crossing over is the process of exchange of gene segments between the non sister chromatids of…

Q: Q.2. Comment on the statement, "Migration may increase or decrease the effects of selection".

A: Introduction We will comment on the statement given in the question.

Q: Q.19. What is a lifestyle disease? List two lifestyle diseases. What is their causative?

A: Introduction In this question we will discuss about a lifestyle disease.

Q: Q.4. Explain why excessive dosage and abusive usage of drugs such as amphetamines, LSD and…

A: Effects of drugs on human :- Seizures, stroke, mental confusion and brain damage. Lung disease.…

Q: Five sweetener samples (labelled A to E) were tested by 97 individuals for the intensity of their…

A: A identify as Glucose.  B identify as Sucrose. C identify as Aspartame. D identify as Lactose. E…

Q: Canine Scott Syndrome (CSS) is caused by a mutation in the splicing consensus motif in the TMEM16F…

A: * canine Scott syndrome is an inherited blood clotting disorder which affects the dogs. * The dogs…

Q: In threonine selected marker number of co-transformation rate is Met 2%-Gly 60%- Trp 10%. In…

A: Introduction: When transformation of two or more genes occur together simultaneously then this…

Q: Question 23 Which of the following is an underlying requirement for universal health coverage? High…

A: Which of the following is an underlying requirement for universal health coverage? A. High quality…

Q: .Define autosome, hemizygous, homozygous, and heterozygous?

A: Genes  Genes are basic unit of heredity. They are present on the DNA.

Q: In six paragraphs, write about Lucy and Ardi. Please include the discovery, skeletal analysis,…

A: There are two skeletons in this story. It tells the story of Lucy and Ardi, two ancient Ethiopian…

Q: In what way do systematists use shared derived characters in their work?

A: Synapomorphies characterize a specific set of groups, but not all members of a clade share the same…

Q: The somatic cells of a given species contain 14 pairs of chromosomes. If a gamete receives one…

A: Somatic cells contain 2n number of chromosomes (diploid) and gametes contain n number of chromosomes…

Q: Fill in the blanks to complete the Punnett Square using the following information. For blank #7,…

A: Given -  Cystic fibrosis is a hereditary illness which is inherited due to the recessive allele (c)…

Q: Differentiate transect and quadrat sampling. What are strengths and weaknesses of usi

A: Terrestrial community or ecosystem The word terrestrial relates to land, so terrestrial ecology…

Q: Mention two effects that phosphorylation of the CTD tail of RNA polymerase II has on the…

A: The CTD is expanded as a C-terminal repeat domain. It is a type of unusual extension that has a…

Q: What is outgroup analysis?

A: An outgroup is a collection of creatures that acts as a benchmark for determining the ingroup's…

Viral Infections

Viruses are abundantly found, minute entities that have genetic material enclosed within a protein coat. The proteinaceous material enclosing the genetic material of the virus is called a capsid. The genetic material could be either DNA (deoxyribonucleic acid) or RNA (ribonucleic acid). A virus is too minute to be looked at with naked eyes and therefore visualized with the help of a microscope. They are acellular entities that require a host for processes, such as replication, transcription, translation and multiplication. Plants, animals, and bacteria act as host wherein the virus reproduce. Viruses cannot multiply outside the host's body and thus are considered nonliving outside the host body.