BIOD 171 Exam 1 Portage Learning Sastifaction Review Exam Questions And Answers Verified Solutions

True or False: A virus is classified as a microbe - ANSWERSTrue. Viruses are not living and are not considered microorganisms, but can be classified as microbes. True or False: The smallest biological unit of life is a molecule. - ANSWERSFalse The smallest unit of life is a cell. What are the four main types of macromolecules found in a cell? - ANSWERSProteins, Lipids, Nucleic Acids and Carbohydrates How many different types of amino acids are available to make proteins? - ANSWERS20 How many amino acids are classified as being essential amino acids? - ANSWERS9 Where can the two major types of nucleic acids be found in the cell and what are their roles? - ANSWERSDNA and RNA They are both found in the nucleus. DNA contains and stores hereditary information and is responsible for the characteristics of living organisms. RNA is a messenger and responsible for translating the hereditary information in DNA and synthesizes proteins. Complete the following RNA strand and indicate how many bonds are formed for each complementary pair. - ANSWERS5'CCAGUAGC3' AGU is the missing part. There are two bonds between A and U and 3 bonds between G and C. The plasma membrane (select all that are true): - ANSWERSIs often a bilayer comprised of lipids Contrains hydrophobic tails pointing inward Carbon, hydrogen, and oxygen atoms come together to form what primary macromolecules? Give an example. - ANSWERSCarbohydrates. They come together to form glucose or lactose. True or False: The genetic material within a prokaryotic cell is contained within a membrane-enclosed region. - ANSWERSFalse Only eukaryotic cells contain its genetic material within a nucleus. Describe the 4 basic bacterial morphologies. - ANSWERSCoccus (round), Bacillus (rod), Vibrio (curved rod), Spirillum (spiral) True or False: Archaea is noted for its ability to survive under harsh conditions. - ANSWERSTrue Animalia, Plantae, Fungi and Protista are all classification under what type of organism? - ANSWERSEukarya Only Eukarya contains animals, plants, fungi and protists. Microorganisms classified ____________ obtain most of their energy by converting light energy into chemical energy. - ANSWERSPlantae A defining characteristic of fungi is the presence of chitin in the cell walls. Which of the following also contains chitin? Select all that apply. - ANSWERSMushrooms, Yeast, Molds No Bacteria. True or False: A defining characteristic of Protista is the inability of colonies to form tissue layers. - ANSWERSTrue The function of the lysosome is (select all that apply): - ANSWERSWaste disposal via hydrolytic enzymes Identify the following cellular components by matching the number with the description. - ANSWERS1. F (Nucleus) 2. B (Lysosome) 3. E (Plasma Membrane) 4. G (Golgi apparatus) 5. D (Rough ER) - ANSWERS - ANSWERS Cell wall are found in which of the following (select all that apply): - ANSWERSPlants, Fungi, Bacteria and Algae Not Mammalian cells. The function of the mitochondria is (select all that apply): - ANSWERSTo produce energy (ATP) True or False: All multicellular microorganisms classified as Animalia are autotrophic. - ANSWERSFalse They are heterotrophic. What various functions do proteins have in a cell? - ANSWERSProteins can move materials in or out of a cell. Some act as a catalysts to speed up processes. They provide structure and enable movement. What is the plasma membrane and what is it made of? - ANSWERSThe plasma membrane is surrounding barrier that restricts movement of material in or out of the cell. The plasma membrane is composed of