What factors may affect an individual’s response to a toxic substance? Why is chronic exposure to toxic agents often more difficult to measure and diagnose than acute exposure? What are synergistic effects, and why are they difficult to measure and diagnose?

Q: Why uncut and cut PCR at different position in the agarose gel? which one can be decided accuracy th...

A: *Gel electrophoresis a technique to separate DNA fragments based on their size. *DNA samples are loa...

Q: Please answer fast the population density (n) changes as a function of the current population densi...

A: The logistic population growth can be calculated by : dn/dt =r n (k-n/k) Where dn/dt is the populati...

Q: Using the concepts of variability, environmental pressure and natural selection, how does the synthe...

A: Introduction In this question discuss how the synthetic theory of evolution explain Darwinian natura...

Q: Can I get this rewritten While the surface area of an organism scales as a square of the length (L^...

A:   While the surface area of an organism scales as a square of length (L2) and the volume of an organ...

Q: Compare bacterial and eukaryotic mRNAs, and explain the functional significance of their structural ...

A: Messenger RNAs (mRNA) are the carriers of genetic information from DNA to proteins. The information ...

Q: An individual’s unique set of_______ can be used in DNA profiling. a. DNA sequences c. SNPs b. short...

A: Introduction  In the genome, there is usually two types of nucleic acid sequence present. One is Non...

Q: Which of the following cloning vectors have the minimal features required for cloning ? Answer =

A: Answer :: Brief description about cloning Cloning is a process that allows scientists to create perf...

Q: 4. During the physical examination, the nurse uses various techniques to assess structures, organs, ...

A: Auscultation - Auscultation is determined as the listening of sound of the internal organs like hear...

Q: Which of the following is an ethical consideration when using animals in research? a. Avoiding expos...

A: The ethical considerations surrounding the use of animals in scientific research are numerous. In so...

Q: Enzyme / Protein Function or Role in DNA Replication

A:

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: Which Class I element has likely experienced the greatest accumulation of mutations compared to its ...

A: Transposable elements are the Jumping genes which are the mobile genetic material within the genome....

Q: Why is ropiness usually observed at the center of the bread  and not on the sides?

A: Ropiness of the bread is due to the Bacterial spoilage which starts as an unpleasant odour and then ...

Q: List the four main types of organic compounds found in living systems, and identify which of these a...

A: All the living organisms are made up of cells and each and every cell of the body is made up by a or...

Q: What is the most accepted hypothesis on the origin of life on earth? How does it compare to the othe...

A: Introduction The heterotrophic hypothesis on the origin of life is the most compelling and widely ac...

Q: 170F 75C « Death in a few seconds 70°c « Death in several seconds 65°C « Death in a few minutes 140F...

A: Mesophilic bacteria are those bacteria that grow well in temperatures ranging between 20 °C to about...

Q: If the distance between your eye's lens and retina is too short, you will have difficulty seeing obj...

A: Introduction :- The retina is a layer of nerve tissue that covers the inside of the back two-thirds ...

Q: what are the advantages and disadvantages of Gel electrophoresis in DNA analysis

A: Introduction :- Electrophoresis is a technique used in laboratories to separate DNA, RNA, and protei...

Q: 8. Which of the following is the longest entity O reads contigs O scaffolds O bases

A: These options represent the various size of base sequences. 

Q: Immune cells from the innate immunity arm are capable of participating in adaptive immunity. can you...

A: The adaptive immune system, also known as acquired immunity, develops an immune response selectively...

Q: What changes in the structure of each polysaccharide affect its gelling property?

A: Gels are solid and jelly-like materials formed from colloid polysaccharides, polymers and proteins. 

Q: Give examples of the different classes of mutations that affect the base sequence of DNA in protein ...

A: Mutations are well stated to define that they are used to refer to changes or alterations that occur...

Q: Indicate the testing procedure for the cortical sensation

A: The purpose of examination of cortical sensation is mainly to see if there is evidence for a lesion ...

Q: Explain the use of a probe in screening a DNA library

A: Introduction: Probes are the small DNA or RNA strands that are used to label DNA. The labeling of DN...

Q: IMPORTANT POINTS TO REMEMBER: •Homozygous (one band)- the size of the band (lower or higher in the ...

A: In general, heterogametic sex refers to the condition in which both the sex chromosomes are differen...

Q: A 31-year-old woman was diagnosed with serious endogenous depression and was started on treatment wi...

A: Introduction: bioavailability is defined as the fraction (%age) of an administered drug that reaches...

Q: A) What is extinction? How extinction is different from expiration? Explain. (B)List the ive mass ex...

A: Evolution is a slow but continuous process. 

Q: . The production of pigment in the outer layer of seedsof corn requires each of the three independen...

A: Let Pr be purple, pr be red and acr be yellow. Part A. The phenotype of parent  P1 = AA CC RR prpr ...

Q: Zhoukoudian Cave provides clear evidence that Group of answer choices A: Homo erectus ventured as fa...

A: Zhoukoudian Cave  This archaeological site is found near Beijing. Complete skulls, mandibles, teeth,...

Q: What are plankton, nekton and benthos?

A: Introduction Thereare three types of aquatic living organisms that can be classified as plankton, ne...

Q: In Figure 8-20, three very different situations are shownthat all result in gene silencing. What do ...

A: A transgene is a gene that is transferred from one creature to another spontaneously or using any ge...

Q: Choose the answer that best fits. 7: The Nariokotome specimen ... Group of answer choices A: is the ...

A: Evolution is a continuous transition of living forms, beginning with the basic forms of the past and...

Q: Compare the structures of DNA and RNA.

A: Nucleic acids are the most important organic compounds found in all living beings. The three major c...

Q: Color blindness is inherited in a(n)_____ pattern. a. autosomal dominant c. X-linked dominant b. aut...

A: Introduction:- Color blindness is the inability to distinguish between the three primary colours of ...

Q: During which one of the following phases of the cell cycle does the nucleus divide? O Interphase O G...

A: The cell cycle can be described as series of events associated with the cell growth as well as divis...

Q: What goes into the reaction tube for Sanger sequencing?   Template DNA, primers, DNA polymerase, an...

A: Sanger sequencing was developed by  Frederick Sanger and his colleagues in the year 1977 to determin...

Q: Differentiate spectroscopy, spectrometry, and spectrophotometry

A: The study of the interaction of matter with electromagnetic radiation as a function of the wavelengt...

Q: Oldowan stone tools are mostly associated with Homo heidelbergensis Group of answer choices True Fal...

A: Introduction: Evolution is the change in the inherited characteristics of biological populations ove...

Q: Basal Metabolic Rate (BMR) depend * on All Size of body Mass of body O

A: The entire number of biochemical processes involved in sustaining the living circumstances of cells ...

Q: What is meant by a primer, and why are primers necessary for DNA replication?

A: DNA replication produces new DNA molecules using the existing DNA strand as a template.   

Q: How did the first fermenting autotrophs appear? What about the first aerobic organisms?

A: Autotrophs, like heterotrophs, respire or ferment and consume the organic molecules they produce; th...

Q: In Alaska what biomes do they have? Is it snow only? In New York what biomes do they have? Brazil an...

A: Introduction :  A biome is a community of plants and animals that have common characteristics for th...

Q: Men have slightly higher values(BMR) than women, because women have less body fat and therefore use ...

A: It is rate of energy used per unit time by the animals in rest condition. 

Q: Label the enzyme graph: 3. H F.

A: When we proceed up a reaction in the absence of enzyme it requires a lot of energy and reaction rate...

Q: What is the hypothesized relationship between Specific Metabolic Rate and Osmotic Stress?

A: Metabolic rate is rate at which metabolism occurs in organism.

Q: Cross a male rat with heterozygous brown fur with female rat with white fur. Note that brown is domi...

A: Let the trait under discussion be labelled as R/r Hence, Brown:- RR or Rr White: - rr When brown rat...

Q: multicellular organisms, nondividing cells stay in G0 phase. For the cell, why is it better to be he...

A: Cells first enter into the G0 phase from a cell cycle checkpoint then in the G1 phase, there are som...

Q: . A snapdragon plant that bred true for white petals wascrossed with a plant that bred true for purp...

A:

Q: Explain why the genetic code is said to be redundant and virtually universal, and discuss how these ...

A: The flow of genetic information from DNA to proteins occurs via mRNA.  

Q: What is a gene?

A: Introduction All living organisms contain genetic material in form of DNA or RNA which get inherited...