Get college assignment help at uniessay writers 4. Nucleic acids from an RNA virus, a DNA virus, and a wombat (an Australian mammal) were analyzed by a very disorganized laboratory technician. The technician lost the identification tags to the samples and is confused about the source of each. Provide help to the technician by identifying the source of the nucleic acid for each sample, giving a reason for each choice. Sample (a) (b) (c) 28.0 21.0 27.0 Adenine Cytosine 22.0 29.0 24.0 Guanine 22.0 29.0 26.0 Thymine Uracil 0.0 21.0 23.0 28.0 0.0 0.0
38% 2:29 AM Fnzyme kinetics, regulatian and use as diagnastic marker ( (C) marks) (D) Biomolecule structure, function and deficiency (20 marks) (E) Integration and control of carbohydrate metabolism pathways (16 marks)
of the beaker Table 12.3 Catalase *рH Hydrogen Peroxide Buffer dH2O Test Tube Extract 3.0 ml pH7 5.0 ml 11, 21, and 31 1.0 ml 3.0 ml pH7 4.0 ml 2 12, 22, and 32 2.0 ml 3.0 ml pH7 3.0 ml 313, 23, and 33 3.0 ml pH2 3.0 ml 1.0 ml 4 14, 24, and 34 1.0 ml 3.0 ml pH5 3.0 ml 1.0 ml 1.0 ml 515, 25, and 35 3.0 ml pH7 3.0 ml 1.0 ml 16, 26, and 36 1.0 ml 6 3.0 ml pH9 3.0 ml 1.0 ml 1.0 ml 17, 27, and 37 818, 28, and 38 1.0 ml 3.0 ml pH1 1 3.0 ml 1.0 ml 19, 29, and 39 2.0 ml 3.0 ml 3.0 ml pH2 TO 20, 30, and 40 3.0 ml PH11 2.0 ml 3.0 ml 92 Exercise 12: Enzymes 14115 PYREX 27/23 620 40 Points Lab Notebook Check Lab 2 Scientific Measurement 5 pts ason 13/14
14115 PYREX 27/23 620 40 Points Lab Notebook Check Lab 2 Scientific Measurement 5 pts ason 13/14
6. A red blood cell is 7 um in diameter. How many mm is this? or egg in um? What is the size of a human ovum In mm? How much smaller than a human ovum is the red blood cell (calculate this by dividing the diameter of the ovum by the diameter of the red blood cell) 7. If you calibrate your microscope so that 10 reticule units seen through the eyepiece corresponds to 0.06 mm on the slide, then you would be able to measure the size of cells and other structures by just using the ocular lens reticule units. For example, ifa cell on the slide was 10 reticule units long, it would be 0.06 mm long. If the cell was 20 reticule units in diameter- how could we figure out its size? We could set up a ratio and a proportion- we know 10 reticule units 0.06 mm -20 reticule units , then solve for x: Try this with the following: Cell A: 10 reticule units 0.06 mm 0.5 reticule units X Cell B: 10 reticule units 0,06 mm 15 reticule units X Which of the two above is most likely a eukaryotic cell? How did you decide this? How do we know that 1 reticule unit is equivalent to 0.006 mm? Show your math.
P elevated precipitation T elevated temperature N=nitrogen deposition C = elevated CO 10 -10 Total Forbs O Annual Grasses P T N c TC TCP TCN TCPN Explain, what does the y-axis mean (ie. what does a negative versus positive number mean)? (3 pts) Which single global change factor had the largest negative impact on all plants in this experiment? (2 pts) Do these results suggest an interactive effect between different global change factors on California grasslands? How can you tell? (4 pts) o p 20 Percent change
1) Island A is 100 m2 and 1000 m from the mainland. Island B is 50 m2 and 1000 m from the mainland. Island C is 50 m2 and 10 m from the mainland. Compare Island A and B in one graph, and Island B and C in the other graph. For each comparison, demonstrate which island will have greater species richness. Be sure to label designate which islands you are comparing. (12 pts) axis and important lines/points on the graph and Assume that ALL of the mainland plant species had many, extremely light seeds. (8 pts) What would this do to immigration rate? Which island would have the greatest species richness? Demonstrate by graphing all 3 islands on the graph below (be sure to label axes, lines, points) Now assume that ALL of the islands had extremely high plant herbivory (and each island has the same herbivore pressure). What would this do to extinction rate for all 3 islands? Which island would have the greatest species richness? Demonstrate by graphing all 3 islands on the graph below (be sure to label axes, lines, points). (8 pts) Extinction ate Immigration rate( te Evtinction Extinction rate Extinction rate Immigration rate ( Immigration Immigration r
survive both very cold and hot weather. Which of the following is one 1) Evergreen Wisteria (Millettia reticulara) of the ways that the membranes of this vine are able to remain fluid when it is-20 C A) by incteasing the percentage of unsaturated phospholipids in the membrane B) by increasing the percentage of cholesterol molecules in the membrane C) by decreasing the number of hydrophobic proteins in the membrane D) by cotransport of glucose and hydrogen E) by using active transport can 2) Cell membranes have distinct inside and outside faces. Which of the following statements is an accurate explanation for this difference? A) Since the cell membrane forms a border between one cell and another in tightly packed tissues such as epithelium, the membrane must be asymmetrical. B) Since cell membranes communicate signals trom asymmetrical. C) The two sides of a cell membrane face different environments and carry out different functions. D) Proteins only function on asymmetrical nature. organism to another, the cell membranes must be one the cytoplasmic side of the cell membrane, which results in the membrane’s 3) Which of these are not embedded in the hydrophobic portion of the lipid bilayer at all? A) transmembrane proteins B) integral proteins C) peripheral proteins D) integrins E) glycoproteins 4) Which of the following molecules dramatically increases the rate of diffusion of ions across cell membranes? A) the sodium-potassium pump C) gated ion channels B) aquaporins D) ATP
5) Diffusion is a directional movement of particles. Which of the following statements concerning diffusion is corect? A) It is a passive process in which molecules move from a region of higher concentration to a region of lower concentration and does not require energy B) It requires an expenditure of energy by the cell, and can be either active or passive C) It is a passive process in which molecules move from a region of higher concentration to a region of lower concentration and requires eneryy D) It is an active process in which molecules move from a region of lower concentration to one of higher concentration and requires energy. 6) Although it is a polar molecule, water can occasionally cross a lipid bilayer. In many cells, however, water can quickly pass through the membrane because A) the bilayer is hydrophilic. B) it mowes through hydrbphobic channels C) water movement is tied to ATP hydrolysis D) it is a small, polar, charged molecule. E) it moves through aquaporins in the membrane 7) In order to ensure that lettuce will be crisp for a salad, a restaurant will immierse the lettuce leaves in plain cold water for 5-10 minutes. If the lettuce leaves were placed in a salt solution, they would become wilted. Therefore, the cells of lettuce are A) hypotonic to both fresh wates and the salt solution. B) hypertonic to both fresh water and the salt solution C) hypertonic to fresh water but hypotonic to the salt solution. D) hypotonic to fresh water but hypertonic to the salt solution. E) isotonic with fresh water but hypotonic to the salt solution. 8) If a patient that is in shock due to a circulatory fluid volume. What would be the result if sterile distilled water, rather than isotonic saline, is administered in the IV? A) The patient’s red blood cells will shrivel (crenate) because the blood has become hypotonic compared to the cells. B) The patient’s red blood cells-will swell and burst because the blood has become hypotonic compared rapid loss of blood is often given IV fluids in order to increase the to the cells. C) The patient’s red blood cells will.shrivel because the blood has become hypertonic compared to the cells. .D) The patient’s red blood cells will swell and burst because the blood has become hypertonic compared to the cells.
t Sucrose 2 M Suorose 1 M Glucose 1 M Glucose 2M In the above diagram, two solutions are separated by a semi-permeable membrane. Water and glucose c can cross the membrane, but it is no permeable to sucrose. At the beginning of the experiment, the level of fluid on both sides is equal, with the molarity of the solutions listed on the diagram. Initially A) side A is hypertonic to side B. C) side A is hypotonic to side B.” B) side A is isotonic to side B. D) side B is hypertonic to side A 10) Which of the following will be true when the system illustrated above reaches equilibrium? A) The water level will be higher in side A than in side B. B) The water levels will be unchanged. C) The water level will be higher inside B than in side A. 11) The movement of a substance acrtiss a biological membrane against its concentration gradient requires energy, usually in tht form of AIP This is known as A) diffusion. B) active transport. C) osmosis. D) facilitated diffusion. Ej exocytosjs. 12) The sodium-potassium pump is found in all cells of animals, including humans and is essential for maintaining life. Which of the following statements is correct concerning this pump? A) moves three potassium ions out of a cell and two sodium ions into a cell while producing ATP for each cycle B) moves three sodium ions out of a cell and two potassium ions into a cell using energy from ATP hydrolysis C) moves three potassium ions out of a cell and two sodium ions into a cell using energy from ATP hydrolysis D) move three sodium ions out of a cell and two cycle ions into a cell and generates an ATP in each potassium 13) What is the voltage across a membrane called? A) water potential B) chemicat gradient .C) membrane potential D) osmotic potential E) electrochemical gradient
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14) There are three types of endocytosis, or bulk transport, the following is a correct statement conceming endocytosis? A) pinocytosis brings only water molecules into the cell, but receptor-medíated endocytosis brings in other molecules as well B) pinocytosis increases the surface area of the plasma membrane, whereas phagocytosis decreases the plasma membrane surface area C) pinocytosis is nonselective in the molecules it brings into the cell, whereas receptor-mediated endocytosis offers more selectivity D) phagocytosis brings fluid into the cell in tiny vesicles, whereas pinocytosis engulfs a particle by extending pseudopodia around it across the plasma membrane into a cell. Which of 15) Platelets areinvolved in blood coagulation at the site of an injury and will release a cell signal called platelet derived growth factor to surrounding cells. This would be an A) hormonal signaling B) autocrine signaling C) paracrine signaling D) endocrine signaling E) synaptic signaling example of 16) . Which of the following types of signaling is represented in the figure? B) paracrine C) hormonal D) synaptic A) autocrine
4/4 17) One of the three major types of membrane receptor proteins is characterized by dimerization and autophosphorylation. This receptor is known as A)G protein-coupled receptors c) steroid receptors ligand-gated ion channels D) receptor tyrosine kinases 18) The sodium-potassium pump maintains a polarity in a neuron, wifh the inside of the eell being negatively charged with a positively charged exterior. In order for a signal to travel across a neuron, the cell must have a rapid reversal of this polarity by allowing sodium ions to tush into the neuron and potassium ions to rapidly leave. Which of the following would be required for this depolarization to occur? A) receplor tyrosine kinase C) ligand-gated ion channel B) G protein-coupled receptor D) steroid receptor 19) Protein phosphatases A) transfer a phosphate group ffom one protein in the pathway to the next molecule indhe series B) activate pfotein kinases by phosphorylation C) amplify the second messenger CAMP D) inactivate protein kinases by removing a phosphate group 20) Phosphorylation cascades involving a Series of protein kinases are useful for cellular signal transduction because they A) are species specific C) amplify the ortginal signal many times B) always lead to the same cellular response D) counter the harmful etfects of phosphatases
Question 9 Calcitonin is a human hormone that is produced by cells in the thyroid gland. a) Calcitonin receptors are found on specific cells in the body i. Research where calcitonin receptors can be found in the human body [2 marks] Name what type of signalling ghrelin is involved in: autocrine, paracrine, and/or endocrine. ii. [1 marks] b) Calcitonin is a peptide hormone and is water-soluble. Draw a labelled diagram of a molecule of calcitonin binding to a calcitonin receptor. Show the cell membrane in the diagram. [3 marks]
Question 8 a) The following question will require you to draw nerve cells in the provided space below. i. two nerve cells and label the major features of a nerve cell on them [4 marks] Label the synapse between the nerve cells. ii. [2 marks] ii. Show on the diagram, the direction that electrical signals travel along the nerve cell. [2 marks] are transferred from one nerve cell to the next nerve cell. b) Explain how signals [4 marks]
d) Explain why muscles cells require large amounts of energy Suscles seaice because theig filaments lerge made up contiacsung are of Caled eas myosin Tnese acin muscie fibers whi cn contrart cela x in and ceauire ATR During rea uired lele [2 marks] controc ionone ATP moiecule s e la xation one ATPmoleunle is and during Question 7 e uired Compare the speed, specificity and duration of nervous and hormonal signalling in humans. [3 marks]
Question 3 The villus is a repeated structure in the digestive system. a) Label the following structure of this villus Structure A Structure B Structure C Blead Structure A vessels pretor Function Structure B Cels Raing me Lartal Structure C [1 mark] b) Name one type of chemical that would be absorbed into Structure A [1 mark] Name one type of chemical that would be absorbed into Structure C. c) lart cal ab ser hs dia taly fats in vili the small [1 mark] Mtestine. March 2019 4 d) Describe the features of the villus that contribute to the large surface area. [2 marks] Describe the features of the villus that contribute to it being thin. e) [2 marks]
Question 4 The function of the respiratory system is to exchange gases between the blood and the outside atmosphere losvs D a) Explain why cells that make up the epithelial layer of the respiratory system have cilia. ebemt [2 marks] b) Draw a labelled diagram of an alveolus. On your diagram, show the direction that CO2 and O2 move across the membrane of the alveolus. [4 marks] Describe the features of the alveolus that contribute to it being thin. c) [2 marks] March 2019
Question 5 The nephrons are the repeating structures in the kidneys. a) Draw a labelled diagram of a nephron. [4 marks Explain whether or not you would find the following chemicals in urine. b) i. The protein albumin Water ji. Glucose Urea iv. [4 marks]
Library Construction Genomic libraries often contain >1 copy of some sequences because you begin with so many nuclei Genomic libraries contain all forms of DNA (coding, non-coding, telomeres, etc.) – How is this useful? What if you were only interested in protein- coding DNA? – Complementary library (cDNA library) Library Construction
Table 12.3 Catalase *рH Hydrogen Buffer dH2O Test Tube Extract Peroxide 3.0 ml pH7 5.0 ml 11,21, and 31 3.0 ml pH7 3.0 ml pH7 3.0 ml pH2 1.0 ml 4.0 ml 212, 22, and 32 2,0 ml 3.0 ml 13, 23, and 33 3 1.0 ml 14, 24, and 34 1,0 ml 3.0 ml 515, 25, and 35 16, 26, and 36 3.0 ml pH5 3.0 ml pH7 1.0 ml 1,0 ml 3.0 ml 1,0 ml 3.0 ml 1.0 ml n17, 27, and 37 818, 28, and 38 919, 29, and 39 lo20, 30, and 40 3.0 ml pH9 3.0 ml PH11 3.0 ml pH2 1.0 ml 3.0 ml 1.0 ml 1.0 ml 3.0 ml 1.0 ml 2.0 ml 3.0 ml 3.0 ml PH11 2,0 ml 3.0 ml 12 141 15 LI i229 La Ntndoe Check Points No. 9800 warsa 800 ST B No 19ROO PYRESPYREX PYREXC No 9800 33 OPnts 2sevan-44 No2 9800 No. 9800 No. 9800 hid0800 REK- No. 9800 PYREXO VISIA X 人 5. What was the purpose of test tubes 11, 21, and 31? What was the purpose of tubes 12, 22, 6.
The post Question: 2. Draw The DNA Replication Bubble. Label The Leading And Lagging Strands And Their Polarities, The Directions Of Replication, DNA Polymerase III, DNA Polymerase I, Primase, Ligase, Topoisomerase, Single- Stranded Binding Proteins (SSBs), Okazaki Fragments, RNA Primer, And Helicase. 3. Telomeres Regulate The Replication Of The Ends Of Chromosomes In … appeared first on uniessay writers.