Q: What is the difference between megaspores and microspores? select an answer and submit. For keyboard…
A: Introduction: Vascular plants (some Pteridophytes, all Gymnosperms, and all Angiosperms) generate…
Q: Which statement best describes the phenomenon of evolution? O Evolution is a fact O Evolution is a…
A: Introduction Evolution refers to the change of characteristics of a population that can be inherited…
Q: Color the following parts: Spermatic Cord- Gray Fibrous tissue-Brown Seminiferous tubules-Yellow…
A: The testis is one of the two egg-shaped structures seen inside the scrotum. They are responsible for…
Q: Who discovered Herpes Simplex Virus Types 1 and 2 and where is its habitat?
A: Only roughly 50% of the genomes of herpes simplex viruses 1 and 2 are genetically identical. The…
Q: Below is the 5'-3' strand of a double-stranded DNA molecule with the following nucleotide sequences:…
A: The RNA is produced from the template strand of DNA by the transcription process that occurs within…
Q: Which of the following is true? Extinction neurons inhibit LTP and thus reduce association value of…
A: Let's examine the question and find the answer, for that we can analyse each of the option and…
Q: Determine the effect of 10% salt solution as a nasal spray to relieve congestion in infants with…
A: The well known to define that they are the fundamental structural and operational unit of life is…
Q: Percent change in egg mass 2 1 0 -1 -2 -3 0.00 Change in egg mass over time 20.00 Time (min) 40.00…
A: Osmosis is the phenomenon of the transfer of water across a semipermeable membrane. The flow of…
Q: A man roughly 60 years of age had an ECG. The ECG results showed a combination of prolonged QT…
A: ECG An electrocardiogram is produced by a technique called electrocardiography in which the…
Q: Take a look at this family. Each parent has a different color hair, one blond and one brown. The two…
A: Introduction Gene is the functional unit of heredity. We inherit all the characters from our…
Q: etermine the molecule which is most likely to have carbon, hydrogen, oxygen, nitrogen and…
A: Numerous macromolecules are needed by our body in order to sustain the metabolic pathways and…
Q: Describe the chemical reaction of glycolysis.
A: Glycolysis is the metabolic process through which a glucose molecule is converted into pyruvates.…
Q: what is the formula for yeast?
A: A single-celled fungus known as yeast is frequently found on plants, vegetables, cereals, and even…
Q: Again i m posting this question give unique explaination Describe the mechanism of enzymatic action.
A: There are numerous metabolic pathways in the human body that are present to keep homeostasis.…
Q: Researchers on the Human Genome Project have determined the nucleotide sequences of human genes and…
A: A patent is an exclusive right that is given for an invention which is not a natural product but can…
Q: The passage of the end products of digestion from the small intestine into the bloodstream O A.…
A: The passage of the end products of digestion from the small intestine into the blood stream is…
Q: Helping tags: Biology, Regeneration, Plasticity . . . . . 1. WILL UPVOTE, just pls help me answer…
A: a) What are the current challenges of CNS regeneration and plasticity research? b) What are the…
Q: There are many theories of abiogenesis, each one has improved our understanding of the origin of…
A: Life on earth was thought to be evolved from non-living materials by some well known Greek…
Q: Osteocytes communicate with each other and with the haversian canal through branching network known…
A: Explanation Osteocytes are the longest living bone cell.This cells residing within the bone…
Q: hen a neuron opens voltage-gated Na+ channels, what happens to the membrane potential?
A: Introduction: Voltage-gated Na+ channels initiate and propagate action potentials in neurons and…
Q: Elaborate in detail the reasons for which the bacterial capsules are medically important.
A: Bacteria can be defined in terms of habited that they are found in a variety of settings. They are…
Q: The oxidation product of ketone bodies:
A: The loss of electrons during a reaction is known as oxidation.
Q: Describe the major types of Catabolism anabolism & their relationship to
A: The term "metabolism" refers to the collection of hundreds of enzyme-catalyzed processes that the…
Q: Task 1 (Weeks 1-2) Fake News Analysis 1. Claim: A bowl of freshly boiled garlic water can cure the…
A: The novel coronavirus called SARS CoV-2 cause the disease called COVID-19. This is the respiratory…
Q: Match the antibody region with its functional description. hinge region Fc Fab kappa alpha chain…
A: Hinge region - provides flexibility to permit binding to different antigenic arrangements. Fc -…
Q: Elaborate the function of the Golgi complex.
A: Lipids, proteins, nucleic acids, and carbohydrates are the main building blocks of both prokaryotes…
Q: Cell membrane carbohydrates participate in... Attaching the membrane to the cytoskeleton…
A: Introduction: All cells are surrounded by a membrane that serves as a protective gate to limit what…
Q: Which is not a characteristic of Action Potential? With constant magnitude Transmits signals over…
A: Action potential defines the sudden rapid rise and fall of voltage or the potential of membrane…
Q: negative and postives of Sanger Sequencing, Illumina Sequencing, PacBio Sequencing.
A: Introduction: Sanger sequencing generates extension products of different lengths that are…
Q: Distinguish between Competitive and non-competitive inhibition.
A: Proteins known as enzymes serve as catalysts, accelerating chemical reactions without undergoing any…
Q: State the list of table content of the task given below: Enzymes in food and Its application in…
A: following is a description about enzymes in food and its application in improving health especially…
Q: Questions 11 - Make a qualitative statement about what you observed in this experiment.
A: Introduction Plasma membrane of our cell is selectively permeable which allows certain molecules to…
Q: In sea lions, long whiskers (W) are dominant to short whiskers (w). A short whiskered sea lion and a…
A: Given , In sea lions Dominant : long whiskers (W) Recessive: short whiskers (w). A short whiskered…
Q: Identify the component of plasma membrane that allows it to carry out its function.
A: Plasma membrane is made up of lipids (20-79%), carbohydrates (1-5 %) and water (20%). Fluid mosaic…
Q: Why is it necessary for cells of the cardiac atria and ventricles to contract in a coordinated…
A: Introduction :- Blood from the veins enters the two atria, which have thin walls. The heart's two…
Q: A. Consider this cross before answering the following questions: A pea plant heterozygous for the…
A: Please follow step 2 for detailed explanation
Q: Describe in detail the term gene .
A: The hereditary components are what make up the gene. Alleles, which are tiny genetic building blocks…
Q: Would samples that were digested with EcoRI have a different pattern than the same sample digested…
A: Restriction endonucleases are the enzymes widely used for genetic engineering that makes a cut at…
Q: Identify the missing words in the below description. Word bank: gain, oxidation, release, reduction…
A: Biological reactions such as cellular respiration and photosynthesis are the examples of Redox…
Q: Define the importance of digestive enzyme for life.
A: A category of enzymes known as digestive enzymes are produced by the body's digestive system. The…
Q: Word bank: acetyl-CoA, ATP, carbon dioxides, NADH, oxygen, pyruvate When sufficient cycle,…
A: Here i discuss about metabolic pathways according to given question. Given word bank to choose and…
Q: Elaborate in which ways in which the mitochondria are similar to prokaryotes.
A: In a eukaryotic cell, the mitochondria, like other cell organelles, play a crucial role. Like…
Q: Schwann cells are a type of glial cell found in the nervous system. In addition to the conduction of…
A: Wounds and cuts in skin of hands or feet usually heal perfectly. But when the brain gets…
Q: Which of the following is a hypothesis? A) A thick long bone (i.e. femur) should be able to…
A: Bones are tissues that form the skeletal structure. They are a living and growing tissue that give…
Q: List two ways that channels differ from transporters? What type of molecules do channels usually…
A: Introduction: The transfer of molecules from across cell or within the cell necessitates the use of…
Q: What discovery in the 1900s supported Mendel's ideas? O A. Hormones B. Ribosomes O C. Chloroplasts O…
A: It was during the mid 19th century that headway made in the understanding of inheritance. Gregor…
Q: The effect on the pH, in the body of the individual when he gets excited and exhales large amount of…
A: The hydrogen ion concentration in log10 is referred to as pH. Acidic solutions have a pH below 7,…
Q: Describe one important anatomical difference between early gnathostome skulls and modern…
A: The term "Osteichthyan" refers to the class of bony fish and tetrapods. The fragmented character of…
Q: Describe how the absence of the RNA polymerase enzyme affects the process.
A: Transcription is the process that is impacted by the lack of the RNA polymerase enzyme. It is the…
Q: 1. Define coelom. How is the coelom related to the hydrostatic skeleton?
A: Skeleton is the framework of bones. All animals possess skeletons, even invertebrates have hard…
Step by step
Solved in 3 steps
- r^2=6Dt , where D is the diffusion coefficient of thediffusing object and t is the time that the object is allowed to diffuse. If the diffusion coefficient, D, of a small protein is 5 x 10^-10 m2 s-1, how long (on average) does ittake for the protein to diffuse across a parasitic wasp that is 189 um long ?After blood collection, the red cells are separated from the serum to be used for the preparation of the stock solution. How is it done? For the serial dilution, your stock solution must have a concentration of 3.5 mg/mL. How much diluent must be added to the 5.3 mg/mL red cell to prepare the stock solution? Show pertinent solution/s. What is the appropriate diluent used for the preparation of the red cell suspension?In step 3 of today's protocol, it mentions that the incubation step with the P2 buffer should not be allowed to proceed for more than 5 minutes. a) What is the chemical composition and concentration (not mass) of each component of the P2 buffer?b) c) What is the purpose of adding the P2 buffer? What would be the major problem if this step is allowed to proceed for a long period of time?
- Compare the lysis for bacteria to that for CHO (Chinese Hamster Ovary) cells. Note, CHO cells are commonly used for production of therapeutics. How resistant are CHO cells compared to the bacterial cells? If the same level of disruption is expected for CHO cells and the homogenizer is operated at the same pressure for both types of cells, would you expect CHO cells to require more or less number of passes compared to E.coli or Bacillis brevis cells?In 1925, E. Gorter and F. Grendel used an apparatus like that described in Problem 1 to determine the surface area of a lipid monolayer formed bylipids extracted from erythrocytes of several animal species. They used a microscope to measure the dimensions of individual cells, from which they calculated the average surface area of one erythrocyte. They obtained the data shown in the table below. Were these investigators justified in concluding that “chromocytes [erythrocytes] are covered by a layer of fatty substances that is two molecules thick” (i.e., a lipid bilayer)?2. What are the substances added in the culture media utilized by the organism producing hydrogen sulfide? Give 2 other media used for the production of hydrogen sulfide. 3. Explain the mechanism taking place in the hydrolysis of urea which leads to the formation of bluish red color. 4. Discuss why human blood plasma will not always yield reliable results.
- Here is a chloride cell in the gill epithelium of a fish. For reference, NKA = Na+/K+ ATPaseNKCC = Na+/K+/Cl- cotransporter. Given that the chloride cells of salt water fish have the NKCC transporter on the basal (bottom) side of the epithelium, what do you predict regarding the NKCC transporter in chloride cells of freshwater fish? A. The transporter must move chloride in the opposite direction, also from the bottom side of the cell. B. The NKCC transporter, as localized in salt water fish, could also work in freshwater fish. C. The transporter must move chloride in the opposite direction, but from the apical (top) side of the cell. D. A transporter is not needed to move Cl- ions into cells from fresh water.The following observations are made on an unknownmembrane protein, X. It can be extracted from disrupted erythrocyte membranes into aconcentrated salt solution, and it can be cleaved into fragments by proteolytic enzymes. Treatment of erythrocytes with proteolytic enzymes followed by disruption and extraction of membrane components yields intact X. However, treatment of erythrocyte “ghosts” (which consist of just plasma membranes, produced by disrupting the cells and washing outthe hemoglobin) with proteolytic enzymes, followed by disruption and extraction, yields extensively fragmented X. What do these observations indicate about the location of X in the plasma membrane? Do the properties of X resemble those of an integral or peripheral membrane protein?1. What 2 controls do your laboratory instructions ask you to use when using the refractometer? 2. On a Urinalysis strip what is the difference between a speckled pattern and a homogenous pattern for a positive reaction on the blood reaction pad? 3. If the following analytes are positive on the reagent strip, what should we expect to see microscopically? Blood (speckled pattern):________________________________ Blood (homogenous pattern):________________________________ Leukocyte esterase:__________________________ Glucose:________________________ Bilirubin with positive icotest:______________________________
- Here is a chloride cell in the gill epithelium of a fish. For reference, NKA = Na+/K+ ATPaseNKCC = Na+/K+/Cl- cotransporter. (image 1) The same proteins have been identified in shark rectal gland, marine birds and reptiles (salt glands in nostrils), marine fishes (chloride cells in their gills) and mammals that transport salt in their kidneys. (image 2) When biologists were testing the mechanism of salt excretion in sharks, they used a chemical called ouabain to inhibit the Na+/K+ ATPase to see if there was an effect. Which result would you expect to see with ouabain treatment? A. A decrease in Cl- in the epithelial cells. B. An increase in ADP in the epithelial cells. C. An increase in K+ in the epithelial cells. D. A decrease in Na+ in the epithelial cells.From this standard curve and chart below, does the separation of molecules in the mixture appear successful from the gel filtration? Is there a clearlydefined separation between molecules? Explain your conclusions. Parameters required for calculation of coefficient (Kd) for unknown protein Volume eluted (mL) Which variable does this volume represent in the equation for Kd? Fraction with maximal DNP-Aspartate detected 36 Vt Fraction with maximal Protein detected 24 Ve Fraction with maximal Blue dextran detected 6 VoPropose a serial dilution that would give total dilution of 1/158000000 (six zeros) Each tube in your dilution series must have a volume of 50 ml or less.