Solve the exponential equation. Use a calculator to obtain a decimal approximation, correct to two decimal places, for the solution.8ex = 13

Use the pull-down menus to insert the best terms that make these sentences true: In any experiment, the variable that the scientist measures is called the and it is plotted on of a graph.  By contrast, the variable that the scientist manipulates or varies in the experiment is called the and it is plotted on of a graph.

A region within the promoter of both prokaryotic and eukaryotic genes has the sequence TATAAT and is called the TATA box.  What would be the consequence to a gene if a mutation changed the sequence to GATACT?

In the Hershey and Chase experiment, why did the radioactive phosphorous end up in the bacterial cells, but the radioactive sulfur did not?

Most dominantly-inherited disease genes have been lost from the gene pool over time.  Read the following information about Huntington’s disease.  Why would a disease gene like HTT, which causes Huntington’s disease, not be subject to the same kind of evolutionary pressure that you would expect for a dominantly-inherited disorder? From Online Mendelian Inheritance in Man: The classic signs of Huntington disease are progressive chorea (tremors), rigidity, and dementia. Typically, there is a…phase of mild psychotic and behavioral symptoms which precedes frank chorea by up to 10 years. Chandler et al. (1960) observed that the age of onset was between 30 and 40 years. The disease terminated in death on average 17 years after manifestation of the first symptoms.

If you put blood into a test tube containing a 400 mOsM glucose solution, what would you expect to observe with a microscope in terms of the red blood cell appearance/structure? Type the best and most specific technical term into the blank below:

Thomas Hunt Morgan disproved Mendel’s Law of Independent Assortment when he showed that genes inherited together on the same chromosome do not assort independently.  Under what circumstance are two genes on the same chromosome more likely to be inherited together and not be separated by crossing over (genetic recombination)?

For the following questions, you will need a periodic table.  Use the one found at this link (don’t worry … Proctorio will be fine if you click this): https://www.fishersci.com/us/en/periodic-table.html   READ CAREFULLY: This question has FOUR parts (A, B, C, and D) and you will need ONE blank sheet of paper (use it wisely).  FOR PARTS A, B, AND C: Write your answers to these parts on your black piece of paper. When you answer each part, write the letter along the left side of the paper and show your solution just under and next to that letter.  SHOW ALL YOUR WORK AS INSTRUCTED IN LABS 1 AND 2. Also, draw a horizontal line across your piece of paper to show where your solution for each part begins and ends. For all atomic weights pulled from the periodic table, round to TWO decimal places.  For all calculations, also round your values and answers to TWO decimal places. Make sure to circle your final answer for each part. When you finish Parts A, B, and C, take a picture of your work with your smartphone and email that image to Dr. Machado at christopher_machado@cuesta.edu.  Make the subject line: Lab 1 Calculations   FOR PART D, TYPE YOUR ANSWER IN THE TEXT BOX BELOW IN COMPLETE SENTENCES!   Part A (6 points) Calculate the number of grams in one mole of tryptophan (C11H12N2O2).     Part B (8 points) Magnesium chloride (MgCl2) is a molecule held together by ionic bonds and completely dissociates in solution.  If you are given a MgCl2 solution that has a concentration of 2.0 g/dL, what would be the molarity of that solution?    Part C (8 points) Calculate the osmolarity (in mOsM) of the MgCl2 solution you worked with in the previous question.    Part D (8 points) If you added 5 mL of this solution to a test tube containing 1 mL of human blood and then observed the erythrocytes with a microscope, DESCRIBE what you expect to see in terms of erythrocyte appearance/structure and EXPLAIN HOW that change occurred by comparing this solution to the normal osmolarity of blood.  TYPE YOUR ANSWER IN THE TEXT BOX BELOW, USE COMPLETE SENTENCES, AND INCLUDE AS MUCH TECHNICAL TERMINOLOGY AS POSSIBLE!

Enzymes catalyze chemical reactions by lowering the ___________. Type the best answer into the text box below:

If both glucose and lactose levels were high in the bacterial cell, how would the expression of the lac operon be affected?