Portage Microbiology Final Exam A+ 2024

True/False. A virus is classified as a microbe. - Correct Answer True Although viruses are not living and as such are not considered microorganisms, they can, however, be classified as microbes, a more general term that includes microorganisms and viruses. True or False: The smallest biological unit of life is the molecule. - Correct Answer False The smallest biological unit of life is the cell At a generalized level, all cells are comprised of what? - Correct Answer At a general level all cells are comprised of macromolecules; proteins, lipids, polysaccharides and nucleic acids. Proteins are formed from various combinations of [answer1] of which there are [answer2] known forms. - Correct Answer 1. Amino acids 2. 20 Define an essential amino acid. - Correct Answer An essential amino acid is one that your body cannot produce. You must intake the 9 essential amino acids from an outside source. Where can the two major types of nucleic acids be found in the cell, and what are their roles? - Correct Answer DNA and RNA are the two major types of nucleic acids found in the cell. DNA holds the genetic information. RNA transcribes this information and gives insutructions to make proteins. Complete the following RNA strand, and indicate how many bonds are formed for each complementary pair: 3' GGUCAUCG 5'5' CC AGC 3' - Correct Answer 3' GGUCAUCG 5'5' CCAGUAGC 3'There are 2 bonds formed between A and U, and 3 bonds between G and C The plasma membrane (select all that are true): Only restricts movement of materials into the cell Is often a bilayer comprised of lipids Cannot prevent essential nutrients from escaping Contains hydrophobic tails pointing inward - Correct Answer Is often a bilayer comprised of lipids Contains hydrophobic tails pointing inward Carbon, hydrogen, and oxygen atoms come together to form what primary macromolecule? Give an example. - Correct Answer Polysaccharide.