If a mutation in a sodium channel in an Intestinal epithelial cell caused a marked decrease In the concentration gradient of sodium across the plasma membrane, which of the following would you expect to observe? a decrease in Na/K ATPase activity. an increase in the movement of glucose across the basolateral membrane to the extracellular space an increase in sodium/glucose co-transport into the cell across the apical membrane a decrease in cytoplasmic glucose concentration
Q: Now we will move on to module 3, where we will examine autoradiographs produced from Sanger…
A: The term DNA sequencing in compasses method for determining the order of the nucleotide bases,…
Q: In the absence of lactose and the lacI repressor gene is mutated such that the repressor protein…
A: Operon is the gene regulatory system in prokaryotes. It regulates the expression of polycystronic…
Q: 1a) Define the term linkage disequilibrium. (b) Explain why it makes sense that natural selection…
A: In genetics, linkage disequilibrium helps in the understanding of how two loci that are not…
Q: What are the two main functions of keeping the stomach highly acidic? 0 Assist in the breakdown of…
A: Introduction Gastric glands on the stomach's wall secrete gastric juice. Mucus, hydrochloric acid,…
Q: Thick beaks are dominant (T) to thin beaks in a species of finches. t t II t It ttttt Select ALL of…
A: Genotype can be described as a genetic makeup of an organism.
Q: Sir Francis Galton (1883) developed the concept of eugenics, advocated the encouragement, through…
A: Francis Galton, derived the term “eugenics” from the Greek word eugenes, meaning “good in birth” or…
Q: explain the benefits of GMO to society (including human health and or economics)
A: Genetically modified organism is an organism which contains and expresses a transgene that is, a…
Q: Sporadic vs endemic
A: 1.Sporadic disease:Typhoid fever in the United States is an example of a sporadic disease, which is…
Q: 1) Describe the term "conditional lethal mutant" as it relates to rII mutants.
A: INTRODUCTION : r II mutants : Bacteriophage T4 is a virus which is responsible for infection in the…
Q: True or False 1. Any time DNA is damaged, a mutation will result 2. The vast majority of DNA…
A: DNA replication is the process by which new DNA is synthesized from the old DNA by semiconservative…
Q: Consider the maternal effect gene that controls snail coiling where D = dextral, dominant, d =…
A: Shell coiling in snails can be dextral (coiling with the right hand) or sinistral (left hand…
Q: Given the following description of plants and fungi, select the possible phylogenetic trees (check…
A: A fungus is a type of the eukaryotic organism belonging to the kingdom Fungi, along with plants,…
Q: Which nephron structure is often longer in animals adapted to desert environments? a. Glomerulus b.…
A: The nephron is the functional sub unit of the kidney. It leads to produce the urine.
Q: 5. Which is the best description of a stem cell. A) A cell that has differentiated into a…
A: Answer: The best description of a stem cell includes two options : A) A cell that has differentiated…
Q: Which fat soluble vitamin or vitamins are rich in the following lunch food items? Write in the…
A: Introduction A vitamin is an organic molecule (or a group of chemically related molecules, known as…
Q: How has gmo helped in medicines or vaccines
A: GMO stands for the Genetically modified organism.GMO is an organism,whose genetic material is…
Q: 5'GGT ACG TTG GGG CTC CAT3' This sequence is transcribed and translated. Write the resulting amino…
A: 1.The transcribed sequence would stand as: 5' GGU ACG UUG GGG CUC CAU 3'. The amino acid sequence…
Q: This image shows the alignment of the promoter from the same gene (gene H) across multiple mammalian…
A: Introduction The central promoter region of genes in archaea and eukaryotes contain a DNA sequence…
Q: ntify the stage of meiosis pictu
A:
Q: A bacteria can multiply at an alarming rate when bacterium splits into two new cells, then doubling.…
A: Bacteria are small single-celled organisms. Bacteria are found almost everywhere on Earth and are…
Q: Explain the role of endosymbiosis in the appearance of the mitochondria Which is the probable origin…
A: Mitochondria is a double membrain bound cell organelle that contain their own DNA (double stranded…
Q: Numerous hair-like structures extend from the cell membrane of the following type of tissue: O a.…
A: All of the body's interior and external surfaces are covered by a type of tissue called epithelium,…
Q: 3. Complete the table by providing the important details about the 11 human organ system. What does…
A: Organs are composed of many tissues that together perform specific body functions. The interaction…
Q: Provide a diagram of the EPH RECEPTOR B2 (EPHB2) structure. Give annotations of binding sites and…
A: EPH RECEPTOR B2 (EPHB2) is a tyrosine kinase cell surface receptor. It has two domains called…
Q: When a virus invades a living cell, its (———-)takes over the cells functions. (Fill in the dash) a.)…
A: Introduction : Viruses are microscopic, non-cellular infectious organisms that can only reproduce…
Q: Discuss the control of gene expression in eukaryotes. PLEASE KEEP
A: Gene expression is the transcription of gene into mRNA and translation to protein. Gene expression…
Q: what are the function for 1.Diacylglycerol (DAG) 2.Inositol Trisphosphate (IP3)
A: DAG (diacylglycerol) and IP3 (inositol triphosphate) are produced from PIP2 by phospholipase C.…
Q: which one would be correct? since its a one answer question
A: A form of urinary tract infection is a kidney infection (UTI). A kidney infection can start in the…
Q: largest digestive gland
A: Gland: It is defined as an organ which makes one or more substances such as hormones, digestive…
Q: In experiments in which rat embryo fibroblasts are transfected with suspected oncogenes,…
A: Myc gene basically a proto-oncogene that play a key role in cell cycle progression, cellular…
Q: What is visible illness and invisible illness ?
A: The distinction is made between the terms disease, illness, and sickness. The term disease literally…
Q: the implications of being able to identify phenotype and behavior correlations in different species…
A: Phenotype is the set of observable characteristics of an individual resulting from the interaction…
Q: Please choose the correct order for the glycolytic intermediates listed below. In any given answer,…
A: Glycolysis is the first step in cellular respiration in which glucose is broken down into two…
Q: A population with three life-stages separated by 3 years is modelled by a Leslie matrix, resulting…
A: a) 0 years before long-term dynamics take over
Q: 4. Normal yeast cells can survive on a diet of sugars, a few simple salts and one vitamin. They can…
A: Alleles are the two forms of a gene. Allele control the same trait though differently. For example,…
Q: The point where separation of the DNA occurs is called the Stranding point True False
A: Introduction :- Nucleotides are a series of molecules that make up DNA. A nitrogen base, a sugar…
Q: Rank these species in terms of their relatedness to crocodiles. Place the most closely related on…
A: Introduction : Phylogeny is the study of the organisms with respect to its evolution and the…
Q: There are several different types of operating budgets. Which of these types of budgets do you think…
A: Introduction: There are four different Budget Types/ Budgeting Techniques. Organizations typically…
Q: Below are listed molecules with different chemical characteristics. Knowing that all molecules will…
A: Introduction A thin polar membrane comprised of two layers of lipid molecules is known as a lipid…
Q: Sketch and label a plot showing the enzyme's initial velocity relative to pH over the pH range 4 - 9…
A: Based on the given data, we can draw the initial velocity vs pH plot under different conditions as…
Q: Turtles, lizards, snakes, crocodiles, birds, and mammals are all amniotes whose offspring gestate…
A: Amniotic membrane as a derived character is shared by clade members. Reptiles and mammals are…
Q: For re-translocation in trees, what nutrients are involved and where are they stored?
A: Introduction Prior to senescence, nutrient removal from plant tissue into the perennial section of…
Q: Days with low heart rate variability indicate that your nervous system is relaxed and ready to…
A: Introduction The minor variations in the time between your heartbeats are known as heart rate…
Q: J
A: Non-Communicable Diseases: They are defined as diseases which are not transmitted from one person to…
Q: Identify the structures within this sarcomere. A band M line Z line Myosin H zone I band Actin H |||
A: MUSCLE CONTRACTION-When you perform an activity, your muscles are tightened, lengthened, or…
Q: Antiparallel is the Directionality of of the two strands in a DNA molecule Complementary base…
A: DNA is a collection of molecules that is in charge of moving and passing genetic information from…
Q: zebra dolphin clam jellyfish sea urchin sea star beetle [Choose ] [Choose ] protostome coelomate…
A: The animal kingdom is divided into various groups so that their study becomes easy. The organisms…
Q: The following resembles a pair of eyes looking at you: O a. Lacunae O b. Plasma OC. Albumin O d. Red…
A: Eyes are organs that allow us to see. They take in light from the world around us and send the…
Q: Instructions: Put the following terms into a word map to explain how they are interrelated for DNA…
A: DNA has the ability to self replicate. It undergoes semi-conservative replication. DNA Replication…
Q: example of EPH RECEPTOR EPHB2 ligabnds Give details of examples
A: EPH receptors ( erythropoietin-producing hepatoma) belong to the receptor tyrosine kinase family.…
If a mutation in a sodium channel in an Intestinal epithelial cell caused a marked decrease In the concentration gradient of sodium across the plasma membrane, which of the following would you expect to observe?
- a decrease in Na/K ATPase activity.
- an increase in the movement of glucose across the basolateral membrane to the extracellular space
- an increase in sodium/glucose co-transport into the cell across the apical membrane
- a decrease in cytoplasmic glucose concentration
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
- Movement of glucose from one side to the other side of the intestinal epithelium is a major example of transcellular transport. How does the Na+/K+ ATPase power the process? Why are tight junctions essential for the process? Why is localization of the transporters specifically in the apicalor basolateral membrane crucial for transcellular transport? Rehydration supplements such as sport drinks include a sugar and a salt. Why are both important to rehydration?Glucose transporters are either open to the extracellular side or open to the intracellular side of the membrane but never both at the same time. True or False? Movement of an ion against or up its concentration gradient is exergonic. True or False? If an amino acid is transported into intestinal epithelial cells through a transporter that is able to concentrate the amino acid using a sodium ion moving down its gradient, this transporter is an example of primary active transport. True or False? The maximum gradient a primary active transporter can build has a potential energy which in magnitude is greater than or equal to the magnitude of the energy released by ATP hydrolysis. True or False?Acetylcholine is a neurotransmitter that, when bound to its receptor, causes the receptor to open a channel that allows the flow of Na+ ions into neurons. When the Na+ ions begin to flow into the neuron, this change in the net charge across the neuronal cell membrane often triggers Ca2+ ion channels to open. In this scenario, the acetylcholine receptor would be acting as a channel, and the Ca2+ channels would be classified as voltage-gated; leaky ligand gated; voltage-gated symporter; antiporter None of the above. ion
- Fill in the blanks: One example of transepithelial transport is the system in intestinal epithelial cells that includes the in the intestine-facing membrane, the energy facing the blood, allowing facilitated diffusion out of the cell into the blood. requiring and the Na+/glucose cotransporter, Glut2, CFTR O Na+/glucose cotransporter, Na+/K+ ATPase, Glut2 Na+/K+ ATPase, Na+/glucose cotransporter, Glut2 Glut2, Na+/glucose cotransporter, Na+/K+ ATPase O Na+/glucose cotransporter, CFTR, Glut2Which of the following statements best describes the absorption of glucose? Absorption of glucose requires digestion by aminopeptidases on absorptive epithelial microvilli before absorption of the carbohydrate smaller units such as glucose. Absorption of glucose requires an electrochemical gradient of high extracellular K+ set up by primary active transport. Absorption of glucose occurs at villi and crypts mainly in the duodenum where amylases break down carbohydrates into glucose. Absorption of glucose occurs at the transporting epithelia in the small intestine and is a secondary active transport that requires a Na+gradientTransport of glucose across the basolateral membrane of intestinal epithelial cells and into the vascular system requires which of the following conditions to occur? Select one: a. Sodium concentration on the inside of the epithelial cell is equal to that outside the basolateral membrane b. Sodium concentration is higher on the inside of the epithelial cell than on the outside of the basolateral membrane c. Sodium concentration inside the epithelial cell is lower than sodium concentration in the intestinal lumen d. Sodium concentration inside the epithelial cell is higher than that sodium concentration in the intestinal lumen
- A chemical called ouabain inhibits the Na/K ATPase (the sodium-potassium pump). What would happen to glucose concentrations in the extracellular fluid (not the gut lumen) after exposure to ouabain, and why? Ouabain would cause intracellular sodium levels to rise, which would reduce the active transport of glucose from the gut, thereby decreasing glucose in the extracellular fluid. Ouabain would cause extracellular sodium levels to rise, which would reduce the active transport of glucose from the gut, thereby decreasing glucose in the extracellular fluid. Ouabain would cause intracellular sodium levels to rise, which would reduce the active transport of glucose from the cell to the extracellular fluid. Ouabain would cause intracellular sodium levels to rise, which would enhance the active transport of glucose from the gut, thereby increasing glucose in the extracellular fluid.(b) The GLUT system is highly selective for glucose. It also speeds up the rate of glucose transport across the membrane by as much as 100-fold when compared to the passive diffusion of glucose across a bilayer in the absence of any transport system. While impressive, this rate of transport is much slower than purely diffusion limited rate of movement (ie. the fastest a molecule can move by diffusion). Given this fact, on the blank plot below draw the expected relationship between the rate of GLUT-mediated transport and increasing [glucose]? Use the space below the graph to explain your answer. fast Transport Rate slow low [glucose] high (c) Next, use a dashed line on the same plot above to draw the shape of the curve when the amount of GLUT transporters in the membrane is cut in half. Briefly explain your answer in the space provided below the graph.Polyethylene glycol (PEG) is a solute that is consumed in order to "clean out" the digestive tract in preparation for a colonoscopy. PEG cannot enter intestinal cells as there is no transport mechanism for it. How would this affect the absorption of water into the small intestine? (assume that it is taken at the correct dose and you are not actually reversing the concentration gradient across the intestinal cells.) Explain your answer in terms of concentration gradients.
- When blood glucose level rises, the pancreas secretes insulin, and as a result blood glucose level declines. When blood glucose level is low, the pancreas secretes glucagon, and as a result blood glucose level rises. Such regulation of blood glucose level is the result of A reproduction thermal regulation community homeostasis 2,279 12 tv N MacBook Air DII DD F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F1 @ %23 24 2 6. %3D * COThe stomach has two types of exocrine cells, chief cell which secrete an inactive form of the protein degesting enzymes pepsinogen, and parietal cells , which secrete hydrochloric acid that activates pepsinogen.Both cell types have an abundance of mitochondria ATP production.The chief cells need energy to synthesise pepsinogen and parietal cells need energy to transport hydrogen ions and chloride ions from the blood into the stomach lumen.Only one of this cell types has an extensive roung endoplasmic and abandant Golgi stacks. Would this be the chief cells or parietal cells?why?The stomach has two types of exocrine cells: the chief cells, which secrete an inactive form of the protein-digesting enzyme pepsinogen, and the parietal cells, which secrete hydrochloric acid (HCl) that activates pepsinogen. Both cell types have an abundance of mitochondria for ATP production- the chief cells need energy to synthesize pepsinogen, and the parietal cells need energy to transport hydrogen ions. (H+) and chloride ions (Cl-) from the blood into the stomach lumen. Only one of these cell types has an extensive rough endoplasmic reticulum and abundant Golgi stacks. Would this be the chief cells or the parietal cell? parietal cells.