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You discover a new molecule and after doing some tests, you determine it is hydrophobic.  Based on what you learned in this class, you can assume this molecule Select all correct choices.

The nuclear lamina is an array of intermediate filaments that line the inner side of the nuclear membrane. If a chemical treatment destroyed intermediate filaments, what would you expect to be the most likely immediate consequence?

The Dscam gene in Drosophila melanogaster (fruit fly) has 115 introns.  Over 18,000 different Dscam proteins have been found in D. melangaster body fluids.  The proteins have a variety of functions including involvement in nerve cell growth and immune function.  This one gene can make so many proteins due to 

You discover a new multicellular organism and find out it is a eukaryote with cells that have cell walls made of chitin.  This organism is

Which of the following points supports the theory that mitochondria and chloroplasts were once free-living prokaryotes? Select all correct choices.

  EXTRA SPACE TO WRITE. USE THIS SPACE ONLY IF NEEDED  

5.2.1 Explain a safety precaution that should be taken when carrying out this test. (2)

9.14 Muscles are responsible for the ventilation of the lungs during breathing. Which row describes their action during the inspiration of air? (1)   diaphragm muscles external intercostal muscles internal intercostal muscles A contract contract relax B contract relax contract C relax contract relax D relax relax contract  

6.3.1 Name the enzyme that digests the starch in the barley. (1)      

9.5 Four solutions were tested to see whether they contained protein, starch or glucose. The colours of the solutions after the tests are recorded in the table. Which solution contained protein and glucose but not starch? (1)   biuret test iodine test Benedicts’s test A blue brown orange B blue blue-black blue C purple brown orange D purple blue-black blue