Question 1. Please help me find k rate constant 11.5 The enzymatic activity of an enzyme with Ks = 2 mM that converts substrate S into product P is measured at an initial substrate concentration So of 10 uM. After 5 min, the substrate concentration is halved. What is the rate constant k, the maximal velocity Vmax and the concentration of product after 12 min?

Strontium-90, a beta emitter, has a half-life of 28.1 yr. If27.9 mg of 90Sr were incorporated into the bones of a growingchild, how many beta particles would the child absorb from thissource in 1.00 day?

A simple random sample of 22 observations is derived from a normally distributed population with a population standard deviation of 5.4. (You may find it useful to reference the z table.) b. Compute the margin of error with 99% confidence. (Round final answer to 2 decimal places.) c. Compute the margin of error with 95% confidence. (Round final answer to 2 decimal places.)

Question 3 Not yet answered Researchers who initially investigated the cell cycle needed to identify the key proteins involved. They employed genetic screens using yeast as their model organism to search for mutants which cannot transit the cell cycle. a. Mutants which cannot transit the cell cycle cannot grow, so what strategy did the researchers use to identify the genes responsible? Briefly, explain how this strategy works (3 marks) Marked out of 5.00 p Flag question b. Explain how "rescue experiments in yeast could be used to identify the human homologues of yeast cell cycle genes. (2 marks)

please provide a step by step solution and highlight answers!! A Review Constants Learning Goal: To identify a permissible circuit. Before proceeding, review the definitions of ideal independent and dependent voltage and current sources For the circuit shown(Figure 1), determine the value of I, that makes the circuit interconnections vald. Assume that V.2 V and l,04A Express your answer to two significant figures and include the appropriate units. View Available Hint(s) HAO? 1.- Value Units Figure of 2 > Submit Part B - Valid connections for ideal and dependent voltage sources For the circuit shotin(Figure 2), determine the value of a that makes the interconnections valid. Assume that V-5V, 1 9.5 A, and I = 10 A. Express your answer to two significant figures. ► View Available Hint(s) 0 AED C RO? 170

11. 3.7 Uneven Legs 3.7a. A 40 kg table that is 3 m long is supported by two legs positioned as shown. The legs are made of aluminum, with diameters 10 cm (left leg) and 5 cm (right leg). 1 m 2 m What is the compressive stress on the left leg in N/mº? Enter answer here I 12. 3.7b. What is the compressive stress on the right leg in N/mº? Enter answer here 14.3.74 if the legs are I m long and the Young's modulus of aluminum is 70 GP, at what small angle does the table sit in poder? I point Enter answer here I

The questions below refer to the diagram. Protein X is a putative regulator of cell polarity. Muun Epithelium Protein X فاقات Microfilaments Microtubules Nucleus ER Protein X EMT MET Protein X a. What does EMT and MET refer to in this diagram? Are these usually reversible states? What transition in cell polarity states does it involve? What processes are EMT and MET involved in during the lifespan of a human? (4 marks) b. During the EMT process, for a cell to migrate through a tissue, what must it do to the ECM? What enzymes are used to achieve this? (2 marks) c. Could Protein X be E-Cadherin? Explain your reasoning. (2 marks) d. If Protein X was a member of the Scribble complex, would its role be upstream or downstream from integrin signalling in directed migration? What would you expect the effect of the loss of function of Protein X be on microtubule organisation during directed migration? (2 marks)