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After reading the paragraphs below, answer the questions that follow.Mr. and Mrs. Smith have three sons in elementary school. Two of their children are progressing normally, but their youngest son, Charles, has been much slower than his siblings in developing speech and language skills. His parents are concerned that he has a learning disability and decide to investigate further. Since some learning disabilities can be genetically based, their pediatrician recommends a chromosomal analysis.The results show that Charles has a trisomy of the sex chromosomes, diagnosed as XYY. A mistake during sperm formation resulted in an extra copy of the Y chromosome. The extra copy was passed on to Charles during fertilization. Most often, this chromosomal change causes no unusual physical features or medical problems, but those with trisomy of the sex chromosomes may have a higher-than-normal risk of delays in learning development.During which stage of meiosis could this mistake have occurred?    

Which statement regarding mitosis and meiosis is true?              

Select the appropriate modal/verb combination to complete the sentence:To stay alive, people ______________  oxygen.

Part II: Fill in the blanks with an appropriate modal. The italicized verb is provided and will help in choosing the appropriate modal. She [BLANK-1] study for the exam if she wants to get a passing grade. She [BLANK-2] to study for the exam with us, but she didn’t show up to meet us at the library. She [BLANK-3] studied for the exam because she ended up getting a bad grade on it. She [BLANK-4] study for the exam today because she has to work all day. She [BLANK-5] study for the exam with us or may just stay home and study alone. She [BLANK-6] cheat on the exam; otherwise, she will fail her course and risk getting expelled from college.

Part VI: Using a modal, write a sentence that explains.                    one thing that you should have done before today’s quiz (besides study because I believe that everyone did study!)

Select the appropriate modal/verb combination to complete the sentence:If you want to be healthy, you __________________  every day.

Part VII: Finish the sentence by using a gerund or infinitive.        Copy (Ctrl C) and paste (Ctrl V) the beginning of the sentence and finish the sentence. Don’t forget to continue the sentence with a gerund or infinitive.      The students would like _______.

Each student will receive a different and random set of 12 questions covering Chapter 21 for a total of 34 points. There is no pausing, so once you start, you must finish the quiz. You will have 30 minutes to complete the lecture quiz, after which the quiz will auto-submit with the questions you have answered in that 30-minute time frame.

BONUS: What is oxidized and what is reduced in the following reaction? 2Al + 3Br2 → 2AlBr3

Without consulting an electronegativity table, a polar covalent bond is found in which of these compounds?