How do sialic acid conformations explain the difference between influenza strains that infect humans and those that infect chickens?

Q: WRITTEN WORK #1: FACT or BLUFF 1. Nitrogen is a nutrient necessary for growth of all living organism...

A: It is a fact. This is because nitrogen is needed essentially for the production of protein in the bo...

Q: Instruction: Identify labeled parts (text appearing after image) of the frog skeleton. se S V

A: Introduction A frog is a tailless amphibian with a short squat body, smooth moist skin, and extremel...

Q: Which of the following types of RNA participate in protein synthesis by bringing the amino acids to ...

A: RNA is Ribonucleic Acid .It has 2'OH group at its bases such as Adenine (A),Guanine (G),Cytosine (C)...

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: Describe shunting inhibition. What is the cellular mechanism, and how does it cause inhibitory effec...

A: Shunting is a neuronal event that happens when an excitatory postsynaptic potential and an inhibitor...

Q: Samantha is a toddler who eats grapes every day but refuses to try other types of fruit. Which one o...

A: Grapes are good source of potassium but not eating other fruits will cause lack of other nutrients l...

Q: Muscle protein, fat, and glycogen are all reservoirs of energy. In what order are they used during a...

A: Fat metabolism is initiated when triglycerides that are ingested got broken down into small fatty ac...

Q: Are ciliates capable of changing their shape? Why?

A: CILIATES Ciliates are most intense and diversified group. They are unicellular organisms with the f...

Q: What is the sequence of the sample DNA submitted for sequencing given the gel electrophoresis profil...

A: Sanger sequencing method is chain terminating method. 

Q: Create a fictional trait that Selection is acting against and describe: 1) What the trait consists o...

A: Introduction Two alleles for a given gene in a diploid organism are expressed and interact to produc...

Q: How did the bacteria maintain its homeostasis when homeostatic disturbance occur.  Explain your answ...

A: The bacteria are classified according to the chemical nature of cell wall into Gram positive and Gra...

Q: What enzyme is missing in the Ahxk2 cells, and what reaction does the enzyme catalyze?

A: Wild type cells are usually considered as dominant. Here wild type cells (white) and hexokinase muta...

Q: What is the difference between a structural gene and a regulator gene? a. Structural genes are tran...

A: The fundamental morphological and physiological unit of heredity is the gene. DNA makes up genes. So...

Q: Why is DNA more stable than RNA?

A: DNA contains deoxyribose sugar while RNA contains ribose sugar. DNA have thymine while RNA have urac...

Q: Human Testis 1. pointed spermatogenic cell? 2. cell origin of #1? 3. cell derivative of #1? 4. cell ...

A: INTRODUCTION Primary spermatocyte They are large diploid cells into which a spermatogonium develops....

Q: Which statement is not true? A. most people in the world cannot digest milk sugar as adults B.rabbit...

A: Question 1:-  A) Statement A is correct as 40% of humans stop producing enough lactase to digest mil...

Q: Exceptions to the universality of the genetic code were once thought to be rare, but more and more e...

A: There are two forms of genetic coding. RNA codons or DNA codons can be used to express the genetic c...

Q: Which of the following would NOT be considered a biological hot-spot?  Group of answer choices A. Ca...

A: Biological hotspot is defined as a geographic area which has high level of biodiversity and is highl...

Q: Are Tetramethrin and Lambda-Cyhalothrinused on food crops?

A: Insecticides are synthetic chemicals used for controlling the insect's pest.   It eliminates them fr...

Q: How do the mRNAs of bacterial cells and the pre-mRNAs of eukaryotic cells differ? How do the mature ...

A: Introduction: The messenger RNA (mRNA) plays a vital role in protein synthesis. It is synthesized us...

Q: What are our conservation priorities?

A: Urbanization and agricultural development have hampered the ability of many ecosystem services to fu...

Q: How did the bacteria maintain its homeostasis when homeostatic disturbance occur.

A: Homeostasis refers to the ability of the body to physiologically regulate its inner environment in r...

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: Which of the following features is associated with the Watson and Crick model of the DNA? sugar-phos...

A: Introduction: Because the two DNA strands are antiparallel, the 5' end of one faces the 3' end of th...

Q: What is the importance of detecting common ancestry?

A: Common ancestry is a term within evolutionary biology which refers to the common ancestry of a parti...

Q: From the table below which shows the metabolic rate for each activity, if a person with height 1.50m...

A: Energy expenditure of human body: It is calculated by the features of body such as its composition a...

Q: . A placenta vera is formed if  a.The placenta is removed during birth. b. The maternal blood bathes...

A: The placenta develops inside your uterus during pregnancy, providing oxygen and nutrition to and rem...

Q: Usually, within a gene, only one of the DNA strands is transcribed into RNA. Why haven’t both strand...

A: The process of the flow of genetic information includes the synthesis of RNA and proteins.  

Q: The sexual response of males is quite different than that of females. T or F?

A: Its True that the sexual response of males is quite different than that of females.

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: extracellular conditions are unfavorable, th

A:

Q: a) List two animals which feed primarily on fluids b) List one animal that relies on symbiotic algae...

A: INTRODUCTION Answer of the question is given below.

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: In Darwin's theory of natural selection, which of the following is a source of evolution: a.Individu...

A: c.Individuals with random mutations who are able to reproduce.

Q: Which of the following CANNOT be classified as "connective tissue proper"? A Dense regular connectiv...

A: Q. Which of the following CANNOT be classified as "connective tissue proper"? Answer - Mucous connec...

Q: Activity Cal/m?-hr 8hrs sleeping 35 8hrs moderate physical labor 150 4hrs reading, writing, watching...

A: Basal metabolic rate refers to the number of calories your body burns each day to keep you alive. Th...

Q: Briefly explain how photosystems (I and II) capture light using different photosystems.

A: The light-dependent reactions use light energy to make two molecules needed for the next stage of ph...

Q: In the presence of allolactose, the lac repressora. binds to the operator.b. binds to the promoter.c...

A:

Q: Computer programmers, working with molecular geneticists, have developed programs that can identify ...

A: Transcription is the process of copying information from a strand of DNA into a new messenger RNA mo...

Q: RNA polymerases carry out transcription much more slowly than DNA polymerases carry out replication....

A: The process of producing two daughter strands, each containing half of the original DNA double helix...

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: Suppose that you are at a party on Friday night, relaxing after your big genetics exam. Someone come...

A: Genetics is a branch of biology which is deals with the study of genes, genetic variation, and hered...

Q: 1. In the sympathetic division of the ANS, preganglionic neurons are located in spinal segments-----...

A: Human neural system consists of highly specialized cells called neurons. It further divides into cen...

Q: Which type/s of histones is/are not part of the histone octamer wrapped by DNA strands but is found ...

A: Histones are proteins that round the DNA. Histones are classified as H2A, H2B, H3, and H4. These cre...

Q: mutant strain of E. coli produces β-galactosidase in both the presence and the absence of lactose. W...

A: Bacteria are microscopic, single-celled life forms that exist in their millions, in each climate, bo...

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: Can predators and prey coexist stably in certain environments?

A: Coexistence theory is a framework for understanding how competitor traits can help species diversity...

Q: Which of the following features is associated with the Watson and Crick model of the DNA?

A: 1. Watson and crick described that DNA strands right which twisted around each other forming right h...

Q: Which of the following experimental techniques was used by Hershey and Chase to establish the geneti...

A: Answer : option 3) Isotope labelling is correct.

Q: Question 1 A T What is the sequence of the sample DNA submitted for sequencing given the gel electro...

A: The unknown DNA samples can be sequenced by the Sanger sequencing method. This method is based on th...

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.