Question 20. Explain briefly the alternation of generation in bryophytes.

Q: Arrange these in chronological sequence of their first appearances on Earth Homo erectus, Lemur, Ch...

A: Evolution is the process of changes in the characteristics of the species from one generation to ano...

Q: State the three (3) important maturity stages at which ginger can be harvested and identify the prod...

A: Ginger (botanical name - zingiber officinale) is a herbaceous perennial rhizome species that is used...

Q: Define the genomics era of modern genetics ?

A: Genomics is study of Genes of all human beings including the interaction between all Genes according...

Q: 3. Identify the IMVIC pattern of the following tubes. For set of tubes that is E. coli positive, ide...

A: The IMViC tests are a collection of separate assays used in microbiological labs to detect coliform ...

Q: an egg cell were treated with EDTA, a chemical that binds to calcium ions: The acrosomal reaction wo...

A: Physiologically, the acrosomal reaction requires presence of calcium ions for the reaction to happen...

Q: A bacteriophage λ is found that is able to lysogenize itsE. coli host at 30°C but not at 42°C. What ...

A: Introduction  Viruses have two types of life cycles either the Lytic cycle or the Lysogenic life cyc...

Q: Define about X-gal (technically 5-bromo-4-chloro-3-indolyl-b-D- galactopyranoside) ? Explain importa...

A: Introduction  In the RDT (recombinant DNA technology), we insert the segment of DNA into the vector ...

Q: DIFFERENTIATE the two factors of species diversity. (Species richness and relative abundance)

A: Answer  Differenciate the two factors of species diversity (species richness and relative abundance)...

Q: Compare the arrangement of cis-acting sites in the control regions of the lac operon and phage λ

A: Bacteriophages are a vast group of viruses that have a diverse set of properties. Their genomes may ...

Q: What is the advantage of the C4 photosynthetic pathway as compared to the conventional C3 pathway? H...

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

Q: What are thermocyclers ?

A: Introduction Polymerase chain reaction (PCR) is a widely used method for rapidly producing millions ...

Q: a) What are the effective population sizes Ne for each Generation 1 through 4, relative to Generatio...

A: a. Relative comparision to 0 generation, generation 1 to 4 have less number of population.size. Bcz ...

Q: What is coevolution? Discuss in the context of predators and prey.

A: Answer :- The term coevolution is that when the beyond what one animal varieties can reflect proport...

Q: Given the following organisms, create a simple cladogram and indicate the trait/s that separate/s th...

A: Cladogram  Cladogram is a diagram that represent the relationship between different group of organis...

Q: Why is this statement false? Without the renal medullar osmotic gradient, you would not be able to r...

A: The main function of the nephrons of the Kidneys to form urine which is primarily made up of urea. N...

Q: Which of the following energy producing pathways in our bodies does NOT require energy? (Choose all ...

A: The term metabolism is associated with biochemical reactions occurring in the cells of the body. Suc...

Q: Define about Amplified cDNA fragments ?

A: Amplification is a process in which the the single DNA can be sequenced to get numerous DNA fragment...

Q: a. Replicate this sense strand to create a double-stranded DNA helix. Write your answers in CAPS LOC...

A: The sense strand is the DNA strand that has the same sequence as mRNA, which uses the antisense stra...

Q: Viruses can easily mutate exchange genetic material, mechanisms referred to as antigenic drift and a...

A: Antigenic Drift - The virus changes genetically by accumulating mutations within the genes that code...

Q: A mutation that inactivates the repressor gene of the lac operon results in (a) the continuous trans...

A: In bacteria and their viruses, an operon is a genetic regulatory structure in which genes coding for...

Q: A plasmid that is both ampicillin and tetracyclineresistant is cleaved with PstI, which cleaves with...

A: The tetracycline resistance gene is present in the recombinant plasmid. To select the recombinant pl...

Q: The normal vaginal microbiota is usually dominated by D a variety of lactobacilli O Gardnerella O Ca...

A: Microbes are organisms that are too tiny to see without a microscope, such as bacteria, archaea, and...

Q: What does vacuoles do?

A: Vacuoles are membrane bound structure present in cell. Membrane surrounding vacuole is called tonopl...

Q: Describe the process of pyruvate oxidation. Be as detailed as possible, including input and output.

A: Oxidation of the pyruvate will cause the formation of Acetyl CoA & CO2 with the formation of NAD...

Q: Describe the process of nitrogen fixation and explain its ecologicimportance

A: There are two different nitrogen-fixing microorganisms they are free-living and mutualistic bacteria...

Q: Name one characteristic that makes the stomach a less suitable environment for pathogens

A: Stomach is the largest part of elementary canal it has sac like appearance. It is the part of elemen...

Q: What crop characteristics influence yield? Size of source (manufacture) and sink (storage and/or usa...

A: The most important factors affecting crop yield include:- Soil Fertility:- Tbe main criteria for gr...

Q: N-terminus

A: Amino Acid units that make up a protein molecule are joined together in a precise sequence. The chai...

Q: Explain the manipulation of newly created recombinant DNAmolecules ?

A: Introduction  Gene cloning is the technique to produce the exact copies of the desired gene by utili...

Q: A plasmid that is both ampicillin and tetracyclineresistant is cleaved with PstI, which cleaves with...

A: A plasmid is a small extrachromosomal DNA molecule that exists in a cell and is physically distinct ...

Q: Question # 17 What are living and nonliving reservoirs?

A: Introduction In this question we will discuss about the living and non-living reservoirs.  

Q: In the Harada-Mori culture technique, how are you going to dispose the culture tubes? Is it suitable...

A: Harada-Mori culture technique It is a method of incubating fecal material on a filter paper strip in...

Q: Where is the gall bladder located?

A: Introduction In this question we will discuss about the location of gall bladder.  

Q: Describe how a gene might be deleted in a zygote using CRISPR/Cas9 editing.

A: CRISPR, which stands for "clustered regularly interspaced short palindromic repeats," is a type of s...

Q: What are living and nonliving reservoirs?

A: Reservior can be living or non living . Living reservoir = It is of two type - Human reservoir and a...

Q: What is the natural habitat of E.coli?

A: In this question we will discuss about the natural habitat of E.coli.  

Q: what restriction enzymes could be used to cut cDNA produced ?

A: DNA-cutting enzymes are restriction enzymes. Every enzyme detects a single or some few target sequen...

Q: What are organelles, which carry out autophagy?

A: Introductioim this question we will write about the organelles, which carry out the autophagy .  

Q: Clonal expansion of B cells:

A: Ans - d) Describes the process of multiplication of B cells that have recognized an antigen. Clonal ...

Q: In your own understanding, explain the function of mast cells.

A: Mast cells are immune cell that take part in variety of physiological responses. They are located in...

Q: Refer to the food web at the top of the page. Which organism occupies trophic level 2? Food Web Wolf...

A: Please follow step 2 for a detailed explanation

Q: and these protect the strands and prevent the separated DNA strands from reannealling at Single stra...

A: DNA replication is the process by which a molecule of DNA is duplicated. In this, a dsDNA molecule i...

Q: ich of the following statements is FALSE?      Select one: a. Enzymes lower the amount of energy...

A: Answer 

Q: In the citric acid cycle, the starting molecule is and the output molecule is

A: Citric acid cycle  Citric acid cycle or Kreb's cycle or TCA cycle is a series of reactions that take...

Q: The image below shows an amino acid at physiological pH. Answer the following questions about this a...

A: Amino acids can be referred to as the monomers responsible for forming proteins. Each amino acid is ...

Q: Refer to the food web at the top of the page. Which terms describe the mountain lion? Select all tha...

A: Introduction Food web:- A food web consists of all the food chains in a single ecosystem, it is the ...

Q: a) In the Dutch population, the results of height on fertility in males is an example of heterozygot...

A: Dutch populations have highest height in entire world. 

Q: The three phases of the photosynthetic dark reactions are and

A: Dark reactions are indirect light-dependent processes, in this, the synthesis of glucose from CO2 ta...

Q: In making red blood cell suspension, why do we need to wash red blood cells in saline?

A: Red cell suspension is a common reagent used for many serologic procedures. Red cell suspensions pro...

Q: Explain the process of converting the circular molecule into a linear vector ?

A: DNA is a double helical linear structure found in the eukaryotes. While plasmids are the circular ex...