1. What did calcium ions do during fertilization in sea urchins?

Q: (1) What is the major difference between the conventional PCR and real time PCR (qPCR) in terms of…

A: Question. What is the major difference between the conventional PCR and real time PCR (qPCR) in…

Q: Which of the following statements are correct about cytoplasmic signaling in cancer cells? Multiple…

A: Metastasis is a significant cause of mortality worldwide. Cancer cells acquire genetic alterations…

Q: Question 10 of 14 Which of the following are true about MHC class I and MHC class II peptide…

A: The statements which are true about Mhc class 1 and Mhc class two peptide loading are 1 : MHC class…

Q: A diploid species has 3 pairs of chromosomes in its somatic cells. In males, the first pair is large…

A: According to the position of centromere present chromosomes can be of different shapes such as…

Q: Study the diagrams below. The diagrams represent four possible phylogenetic trees showing the…

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Q: Describe critical concentration (Cc) • Describe actin/microtubule polymerization • Contrast “T” and…

A: Cytoskeleton is complex network made up of microtubules, intermediate filaments and actin filaments.…

Q: What is the role of dictyosomes in cell metabolism? What is their forming face? Their maturing face?…

A: Introduction :- In animal cells, the Golgi apparatus appears as a single compact or loose complex…

Q: E. Aureliano has a mutation in the blue-shaded nucleotide in the TEMPLATE DNA sequence. Instead of a…

A: A mutation is a change in our DNA sequence that happens as a result of errors in DNA copying or…

Q: Genetically modified foods are products produced from organisms that have had genetic modifications…

A: Genetically modified foods are produced by genetic engineering techniques. Scientists modify their…

Q: Study the sequences below. Construct a molecular cladogram from the different amino acid sequences…

A: Introduction The phylogenytic tree represent the relationship between different organisms and also…

Q: immunosenescence.

A: Immunosenescence refers to the age-associated decline of the immune system which may contribute to…

Q: Domain(s) Presence of a nucleus Location of DNA Number of organelles Cell wall material Type of cell…

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Q: Discuss the importance of determining the physical characteristics/properties of citrus and onion

A: introduction: 1)Citrus; Swingle (1943) devided the genus citrus into three independent genra:…

Q: Name the four compartments of the stomach of ruminant. Which two are located primarily on the left…

A: Ruminant animals, such as, cattle, goat, deer, horses, camels, possess a special type of stomach,…

Q: what is the function and origin of this DNA sequence (use BLAST and NEBcutter)?…

A: Introduction  Genes are the main regulatory sequence of nucleotides found in the nucleus which…

Q: Almost all birds starved during the dry season depicted here. What type of selection would have been…

A: Due to different selective environment pressure, the gene pool composition changes, and this is…

Q: If a goose with genotype Aa had migrated instead of the goose with genotype aa, would the scenario…

A: The movement of genes into or out of a population is referred to as gene flow. Such movement may…

Q: L. BOT2 and Etosha45 populations are on the same branch of the phylogenetic tree. Why do you think…

A: Phylogenetic trees represent evolutionary linkage between organisms represented in a tree form that…

Q: How many species are present at year 1000? Justify your answer (i.e., clearly explain your…

A: The term species can be defined as a group of individuals that are able to inbreed. Speciation is…

Q: Which of the following statements is TRUE?     RNA codes for the production of protein.…

A: Nucleic acids These biomolecules constitutes chain of nucleotides. DNA and RNA are nucleic acids,…

Q: Besides heat shock method, elaborate another procedure commonly used for transformation cell. of a…

A: CaCl2 transformation method Competent cells are the bacterial cells(host)  that can accept…

Q: Channel gating – Carrier-mediated transport

A: Channel Gating :  It is defined as the  process of encoding of biological signals as a change in…

Q: What are the most abundant components of a plant cell walls? How do the components interact, and how…

A: Cell wall The cell wall is a non living , rigid , and the permeable structure surrounding the plasma…

Q: Template strand: 5' AATCATAACTCATTG 3' A. Write the CODING strand of this sequence, including the 5'…

A: Introduction :  The genetic code is a collection of rules that living cells use to decode the…

Q: 1. Phenylethyl alcohol (PEA) agar is a selective media. Which of the following organisms should NOT…

A: The comprehensive research of microorganisms, whether they have one cell, many cells, or are…

Q: Which of the following proteins will CERTAINLY have quaternary structure? Select one: a. autophagy…

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Q: Your cynical best friend says, “Who cares if one out of every two species of amphibian goes extinct?…

A: Introduction :  The variety of life forms is referred to as biodiversity. It is a term that is…

Q: You prepared 10-7, 10-8, and 10-9 dilutions of a bacterial suspension in sterile saline. Then you…

A: Introduction There are different culturing techniques such as agar plates, broth culture, stab…

Q: why are folk with diabetes mellitus at a higher risk for amputation of extremities?

A: Introduction Diabetes mellitus is a type of diseased condition in humans. A disease is defined as an…

Q: Why do vestigial structures still exist if they are no longer useful?

A: Anatomical structures in an organism that are deemed to have lost most or all of their primary…

Q: In the copies of each sequence below, divide the sequences into codons (triplets) by putting a slash…

A: DNA is a genetic material in most of the organism. It is two stranded ladder like structure which…

Q: Explain giving reasons the bending of the shoot tip of a plant towards light source coming from one…

A: Plants require sunlight, water, oxygen, and minerals to grow and develop. These are external…

Q: Why does the population of S. aureus bacteria not pose a life-ordeath health threat outright?

A: The comprehensive research of microorganisms, whether they have one cell, many cells, or are…

Q: What would most likely happen if you experimentally delete the signal sequence of a prospective…

A: mRNA and the ribosome work together to generate a specific protein during protein translation.…

Q: Calculate the total number of bacteria in your yogurt container three times (in duplicate). Begin by…

A: Colony forming unit:  A colony-forming unit is used to determine the number of viable microbial…

Q: What forces drive solutes from one side of the membrane to the other? • What solute properties…

A: Introduction: Because they control which chemicals can pass through and how much of each material…

Q: Why do water-dwelling animals have thicker bones than land-dwelling animals?

A: Bones are the organs of support and form the part of skeletal system. These maintain the body shape…

Q: Both water and the cytosol of cells are hydrophilic. Select one: a. True b. False

A: Hydrophobic molecules  Molecules that do not dissolve in water. Repel water molecules. Non-polar…

Q: 6. (top or bottom) Species A, B, C, D, and, E are all extant species (living today, not to be…

A: Note: According to the guidelines, we are answering the first question here. Please repost the other…

Q: A. Predict the pressure of nitrogen gas at T =-98 K and v=0.00375 m³/kg on the basis of (a) the van…

A: The symbol p or P is typically used to indicate pressure. It will calculate the force per unit area…

Q: If a person is severely dehydrated, explain what would happen to the plasma volume, hematocrit, and…

A: Water is very much important for living organisms including human beings. Different chemical…

Q: Why are the similarities among organisms during early development evidence for evolution? Give an…

A: Evolution is the gradual change in the inherited traits of natural populations over many…

Q: Anatomically, the motor endplate potential is characterized by synaptic boutons active zones O…

A: Motor endplate-The specialized postsynaptic area of a muscle cell(myocyte). The motor endplate lies…

Q: We’re back in the lab having fun! Our current experiment calls for us to treat our cells with THC…

A: A stock solution is prepared by weighing out an appropriate portion of a solid or by measuring out…

Q: If the goose with genotype aa had migrated to population 2 as shown but had failed to mate with any…

A: The transfer of genes into or out of a population is referred to as gene flow. This migration could…

Q: Explain the steps in vesicle docking and fusion • What proteins are involved? What are their…

A: The science of cell structure and functioning is known as cell biology, and it is based on the idea…

Q: 1. 1. 4. 6.

A: At the cellular level, cell division drives the mechanism of reproduction. With exception of germ…

Q: Differentiate extrafascicular and fascicular water conduction.

A: Cambium is present in dicot plants between the xylem and phloem meristem cells. The primary function…

Q: Suppose you had a sample that contained equal concentrations (in unit of mg/ml) of DNA and a…

A: Deoxyribonucleic acid (DNA) is a polymer composed of two polynucleotide chains that coil around each…

Q: Phospholipids (Which is charged, what is the functional significance? Are they preferentially…

A: Phospholipids are biomolecules that are composed of glycerol, phosphate group, and lipids/ fatty…