What are the pointed structure

Q: Giardia intestinalis (old species designation was lamblia)- flagellated protozoa in a fecal smear. M...

A: Introduction: Giardiasis is caused by the Giardia parasite, which is a tiny parasite. It has a direc...

Q: Galton put a lot of emphasis on investigating... a.Differences among individuals. b.Small samples. c...

A: Answer : Option (a) is correct. - differencea among individuals.

Q: The filtrate is dilute at the start and end of the loop of Henle. What, then, is the function of the...

A: Introduction: The bladder, ureters, kidneys, and urethra makes up the renal system. This system is n...

Q: How does T cell activation differ from B cell activation?

A: Introduction :- T cells are one of the immune system's most essential white blood cells, and they pl...

Q: Question 15 The following statements best describes the RNA structure EXCEPT A it is usually single ...

A: RNA (ribonucleic acid) is a molecule which is a polymer of nucleotides. Unlike DNA which is double s...

Q: Humans with AB blood-type will produce: a. A and B antibodies b. A and B antigens c. No antigens d. ...

A:

Q: he water potential of the egg is -5 bars. Predict the water potential of the salt water .

A: Water potential is defined as a measure of the potential energy of water.  It also determines the po...

Q: Duchenne muscular dystrophy is caused by a mutation in a gene that comprises 2.5 million base pairs ...

A: Eukaryotic cells have a nucleus that is membrane-bound, whereas prokaryotic cells do not. Eukaryotes...

Q: What are the Regulations associated with Tetramethrin and Lambda-Cyhalothrin?

A: Tetramethrin (HSG 31, 1989) is  a pyrethroid insecticide, and is a chemically synthesized analog of ...

Q: What is the diameter of the field of view (DFV) of a 1000x objective lens if the DFV of a 400x objec...

A: Given: Objective lens 1 magnification= 1000x DFV1 = ? Objective lens 2 magnification= 400x DFV2 = 50...

Q: Question 11 The A and B forms of DNA A are both left handed helix B are both right handed helices (c...

A: DNA is a dioxyribose nucleic acid. Which has made up of 2 polynucleotides strands coiled around each...

Q: Question 18 Ribosomes are made up how much RNA component? A 50% B 1/3 c) 2/4 D 2/3

A: The ribosomes are involved in translation that is responsible for the production of polypeptide chai...

Q: How do symplast apoplast and the casparian strip work with each other?

A:

Q: Describe the similarities and the differences between oogenesis and spermatogenesis. Provide enough ...

A: Oogenesis and spermatogenesis are the process of formation of male and female gametes. The fertiliza...

Q: How could you equalize the water level on each side of the tube by adding solute? Pure water Postive...

A: We can equalise the water level of the tube by adding solute to the left side of the tube so that wa...

Q: 1. Describe the movement of amoeba on microscopes. 2. Describe the movement of the euglena on micros...

A: Under microscope, amoeba draw and withdraw the pseudopods while changing shape called amoeboid movem...

Q: Sgo1 establishes the centromeric cohesion protection during meiosis metaphase I* True O False

A: Cell division is the process by which a single cell divides and produce multiple cells that helps in...

Q: The A and B forms of DNA A are both right handed helices B) both have 10 base pairs per turn of the ...

A: A and B form of DNA : answer (A)are both right handed helices. (B)both have 10 base pairs per turn o...

Q: What characteristics are most commonly found in rho-independent terminators?

A: Transcription is terminated in bacteria by two mechanisms: intrinsic (Rho-independent) termination a...

Q: In Drosophila, the sepia mutation (se, chromosome 3, position 26) results in dark brown eyes, while ...

A: Introduction :- D. melanogaster is an ideal model organism due to a variety of characteristics. The ...

Q: Describe the process of regeneration.?

A: The natural process through which injured or misplaced cells, tissues, or organs are healed or repla...

Q: If a splice site were mutated so that splicing did not take place, what would be the effect on the m...

A: Cells are the functional units of life. Cells make the whole organism.  Cells consists of various ce...

Q: Question 9 The structure of the transfer RNA assumes a more 3-dimensional structure because of the h...

A: Introduction: Most living organisms and viruses include ribonucleic acid (RNA), a chemical. In the n...

Q: Question 7 The long solenoid structure of the chromatin material binds to a protein scaffold through...

A: The long solenoid structure of chromatin material is Histone molecule. Histones, which attach to DNA...

Q: Compare the roles of general transcription factors and transcriptional activator proteins.

A: Transcription is the process of translating info from one stranded DNA molecule to a new molecule of...

Q: Why is it typically difficult to identify individual genes that govern particularbehaviors?

A: Gene is a working segment of DNA that mainly codes for proteins. There are two different regions of ...

Q: What are the four basic types of introns? In which organisms are they found?

A: Introns are the sequences that do not code for proteins.  

Q: What is RNA editing? Explain the role of guide RNAs in RNA editing.

A: RNA, or ribonucleic acid, is one of the three primary biological macromolecules required for all kno...

Q: If 4% of human and chimpanzee DNA differs, how many base pairs differ between the two species? (Hint...

A: Deoxyribonucleic acid is a molecule made up of two polynucleotide chains that coil around each other...

Q: Through genetic engineering, a geneticist mutates the gene that encodes TBP in cultured human cells....

A: A promoter is the sequence of a transcription unit where RNA polymerase binds for transcription.  

Q: How does application of DNA sequencing help Black (and other) populations in establishing their fami...

A: DNA sequencing is a scientific laboratory technology that is used for the determination of exact seq...

Q: List two major types of forensic science laboratories and explain the reasons for their existance? ...

A: 6 ans... A.. DNA fingerprinting forensic science laboratory.. this is very modern technology used fo...

Q: Choose a reproductive biotechnology explain the basic process that is used, and, using à felevant ex...

A: Reproductive Biotechnology : It encompasses all current and anticipated uses of technology in human ...

Q: Question 8 The unique stem-loop structures of the transfer RNA helps the RNA perform its function of...

A: RNA is ribose nucleic acid, having mainly 3 forms. t-RNA--transfer RNA r-RNA -- ribosomal RNA m-RNA ...

Q: Questión 15 The following statements best describes the RNA structure EXCEPT A it is usually single ...

A: Answer : Option D is correct. - according to the question asked above, option (d) cannot describe th...

Q: 2. Are ionotropic or metabotropic receptors faster? Why? What causes the delay in the slower recepto...

A: Receptor are large micro molecule present on cell membrane which is bind another type of small molec...

Q: how parents pass characteristics hybrid a. on to their offspring b. Gregor Mendel differences in an ...

A: Genetics is branch of biology that is concerned with study of genes, their genetic variation, and he...

Q: A solution of water and dissolved ions is separated by a selectively permeable membrane that allows ...

A: Introduction The potential energy of water per unit volume in comparison to pure water in reference ...

Q: Which of the following is a problem with using the Biological Species Concept? A. it doesn't apply ...

A: Introduction A species taxon, according to the Biological Species Concept, is a group of creatures t...

Q: Why is photoperiod such a widely used time cue?

A: The ability of a plant to re-orient its shoot growth towards a light source is known as phototropism...

Q: Many human genetic diseases are caused by mutations that occur at splice sites. Propose some ways th...

A: Introduction: When it comes to its base makeup and DNA sequence, the genetic macromolecule known as ...

Q: À transmembrane protein was synthesized in the orientation shown below (N amino- and C = carboxy- te...

A:

Q: Virology: Why do cells express viral receptors if it allows them to be infected?

A: Introduction :- In viral host range, tissue tropism, and viral pathogenesis, virus–receptor interact...

Q: Dr Merrick is so excited to know the affinity constant Kd values for O2 binding to mammoth OBP and e...

A: ANSWER;- It is given that the ka values of OBP and elephants Hb are the same at pH=7. Kd is the equi...

Q: Which bases can exist in either keto or enol form

A: Tautomers are molecular isomers found in fluid or in cells. Chemical bonds are changed numerous time...

Q: Discuss the process by which amoeba engulf food. 2. What is the use of contractile vacuole among amo...

A: Amoeba engulf their food by expanding the pseudopods. These expanded pseudopods  engulf food or part...

Q: . A woman of blood group AB marries a man of blood group A whose father was a group O. What is the p...

A: A, B, AB, and O are the four major blood groups. The genes you acquire from your parents define your...

Q: What would be the most likely effect of a mutation at the following locations in an E. coli gene? a....

A: Part A. There will be no transcription. Part B. The rate of transcription will be decreased. Part C....

Q: what are the reasons for the occurence of codominance and incomplete dominance traits?

A: Codominance is a term that refers to the link between two variants of a gene. Individuals inherit on...

Q: Compare the pattern of early growth that occurs in eudicots andmonocots after germination

A: The embryonic stage of a plant's life is represented by the seed. The embryo (immature seed), endosp...