Name three features common to the activation of cytokine receptors and receptor tyrosine kinases. Name one difference with respect to the enzyme activity of these receptors.

Q: Explain briefly how energy is harvested from ATP.

A: ATP is the energy currency of the cell. ATP is generated by the breakdown of carbohydrates, fats and...

Q: embryological explanation why The dorsal mesocardium is a ventral mesentery

A: Mesentery: The mesentery is a human organ that connects the intestines to the posterior abdominal wa...

Q: If the purity of DNA sample is below 1.8 A260/A280, where did the protein contamination come from?

A: The absorbance ratio at 260 nm & 280 nm is used to determine the quality of DNA & RNA.  A ra...

Q: What are structures 6 and 7? This is the leaf anatomy of Zea mays

A: Zea Mays is isobilateral leaf. Also called as maize. 

Q: explain why we feel headache when we woke up late and not eating a breakfast before going to school.

A: *carbohydrate metabolism is s chemical process that supplies continuous energy to cells. * The major...

Q: Which of the following is an example of a healthy microbiota that helps prevent infection from poten...

A: 1. Cytophaga can cause erosion of the yolk skin, spinal deformities, central nervous system signs or...

Q: Lactose fermentation can be used to distinguish between which of the following? Bacteria of the ...

A: Fermentation is one of the earliest food processing processes. Lacto-fermentation is a type of ferme...

Q: Describe some applications of genomics.

A: Introduction The study of genomes involves the analysis, sequencing, and mapping of genes, as well a...

Q: Of the choices below, pick the answer that best characterises pulsatile flow: O In pulsatile flow, r...

A: The best characteristic of pulsatile flow is- In pulsatile flow, red blood cells must deform to pas...

Q: 1. Is it possible to change either blood buffer capacity or muscle buffer capacity?   2.  How does...

A: Buffer capacity: it is a capacity to resist the any change in pH when small amount of acid or base i...

Q: What are the advantages and disadvantages of the presence of cranial kinesis?

A: Cranial kinesis is the term for significant movement of skull bones relative to each other in additi...

Q: QUESTION 1 Match the term with its best definition. v follows a particular compass heading v moves u...

A: Animal behaviour deals with activities performed by animals for their survival or in response to cha...

Q: In the absence of oxygen, the cell's ability to convert glucose into ATP is

A: Anaerobic respiration is sometimes is also known as fermentation, it is a metabolic process in which...

Q: Bone mineral has the following -properties None O Has a fair amount of tensile strength Can be bent ...

A: Bone is one kind of living tissue that made a skeleton and gives the proper shape of a body. Bones a...

Q: 8. Another unique feature of coronaviruses is usage of a -1 ribosomal frameshift. Explain this frame...

A: Defination- Ribosomal frameshifting is a biological phenomenon that occurs during translation that r...

Q: Molds are ubiquitous or widespread due to what visible structure? Explain in minimum of 4-5 sentence...

A: Introduction:- Molds are microscopic creatures that can be found both indoors and out. They are a na...

Q: the force of blood-- in your arteries when your heart contracts (beats) diastolic pressure None O sy...

A:   Cardiac cycle is the term used to describe the relaxation and contraction that occurs as a hard wo...

Q: A direct transfer of DNA from a bacterium to another is an example of:

A: Transduction is the genetic transfer through the help of bacteriophage between the bacterial cells.A...

Q: Q2. Complete the table below with a tick to show which of the following statements describe the mole...

A: Complete the table to describe the molecules. 

Q: What type of mutation might render the following proteins constitutively ac- tive: (a) Smad3, (b) MA...

A: Constitutive activation is the modification of a protein or signalling pathway so it is functional o...

Q: A certain Drosophila protein-encoding gene has one intron. If a large sample of null alleles of this...

A: Introduction :- Any nucleotide sequence within a gene that is deleted by RNA splicing during the mat...

Q: Use an example to explain how a change in the environment canfavor a mutation that had previously be...

A: Mutation means change in DNA sequence.The factors which are responsible for mutation know as mutagen...

Q: To understand the genetic basis of locomotion in the diploid nematode Caenorhabditis elegans, recess...

A: Introduction Genetics is a branch of biology that studies genes, genetic diversity, and heredity in ...

Q: In order to view Treponema pallidum, the causative agent of syphilis, under the microscope, you can ...

A: In test we are detecting a bacteria under microscope (fluorescence microscope) and the tag are uses ...

Q: the living cells of * bone osteoclasts Osteocytes O

A: Bones provide the structure for our bodies. Human skeleton is made up of 206 bones.

Q: List 5 significance of organic waste recycling. Explain each briefly.

A: Introduction :- Organic wastes are biodegradable materials derived from living organisms such as pla...

Q: What are helicases and topoisomerases?

A: Enzymes are the proteins present in the cells and have catalytic powers.  

Q: In hospitals where many tuberculosis patients are treated, the population of tuberculosis mycobacter...

A: Introduction The appearance of multiresistant strains of pathogenic parasites in hospitals, as well ...

Q: A frameshift is caused by ________ mutations.

A: Frameshift mutation is a genetic mutation caused by deletion  or insertion in a DNA sequence that sh...

Q: Provide 3 factors that influence sea level rise. Explain how each factor is influenced over differen...

A: Mostly human-induced global warming is the force behind the current global sea-level rise.

Q: Define about Cloning Vectors ?

A: A cloning vector is a small piece of DNA that accepts the target DNA and multiple its copies manifol...

Q: PCR can be used______ . a. as a cloning vector b. in DNA profiling c. to modify a human genome

A: DNA is the genetic material present in the cells of living beings.  

Q: cleave speciic 4 to d Dase pail sequeices al a. restriction endonucleases b. helicases c. DNA ligase

A: Helicases are enzymes that attach to nucleic acid or nucleic acid associated proteins and might modi...

Q: Enterobacteriaceae species might be differentiated (from one another) by all of the following except...

A: Amino acid fermentation reports by enterobacteriaceace family members has not been published yet.  L...

Q: of the following is a category covered in a standard code of ethics? A.O Bias B.O Observing C.O Comm...

A: Standard code of ethics is seen with confidentiality. Confidentiality is highly needed in the field ...

Q: When using the blue/ white colony screening method, what do blue colonies represent ?

A:  Blue- white screening is used for the identification of recombinant bacteria.

Q: Embryological explanation why branchial arches are absent in humans but not in fishes.

A: Introduction:  Branchial arches are also known as pharyngeal arch.  They are embryonic structures th...

Q: In what ways can you use aseptic technique principles in your daily life to preserve a healthy lifes...

A: According to the question we have to explain the ways by which we can use aseptic technique principl...

Q: Which of the following is true of oligotrophic lakes?

A: Lake ageing It is the natural process by which a lake fills in with erosional materials carried in b...

Q: Is Your Bottled Water as Safe as You Think It Is?

A: The Food and Drug Administration (FDA) has made some set of standards for the purpose of bottled wat...

Q: Describe the deference between microbial contamination and microbial fermentation in milk?

A: Fermented or cultured milk is prepared by adding microbes like bacteria or moulds to the normal milk...

Q: he advantages and disadvantages of a bipedal po

A:

Q: The anticodon loop of one of the t RNA Gly molecules from Escherichia coli is as follows: C--G G--C ...

A: tRNA is a specialised RNA molecule that transports the amino acids during translation. A tRNA is spe...

Q: DNA differs in composition from RNA in having deoxyribose and uracil rather than ribose and thymine....

A: FALSE. DNA differs in composition from RNA in having deoxyribose and thymine rather than ribose and ...

Q: Illustrate and describe the life cycle of the following:  Strongyloides stercoralis Please include r...

A: Strongyloides stercoralis: it belongs to nematodes i.e. round worm. 

Q: why dna sequence used in the construction of recombinant dna molecules can originate froma ny specie...

A: Recombinant DNA Technology:   Recombinant DNA Technology is a method for creating artificial DNA by ...

Q: You are tasked with measuring the quantity of prostate specific antigen (PSA) in a urine sample usin...

A: Introduction: ELISA stands for Enzyme Linked Immunosorbent Assay. It is a commonly used laboratory t...

Q: A DNA fragment of interest is inserted in the BamHI site of plasmid pBR322.The recombinants will be:...

A: Genetic Recombination: Recombination is a process of alteration of the existing genetic properties o...

Q: What Data is included in a population pyramid, and what is the purpose behind the three groupings?

A: A population is defined as a group of individuals which can inter breed with each other and produce ...

Q: Explain the concept of electrophoresis.

A: Introduction Genetic engineering is the process of altering an organism's genetic makeup using recom...

Cell Signaling

It allows cells to perform various cellular activities, coordinate, and interact with other cells. All cells of an organism receive signals from their environments and respond accordingly. Even the unicellular eukaryotes receive signals secreted by other cells and respond. In the case of yeast, mating takes place by signaling between the yeast cells. Communication by cell signaling in a multicellular organism has become a vast and important part of various fields of biology.