ASU BIO 181 Exam 1 Questions and Answers 100% Verified

ASU BIO 181 Exam 1 Questions and Answers 100% Verified The paramecium discussed in class contained an organelle called the contractile vacuole. This is the presumed precursor of the: - answerkidney A cell that is anchorage-dependent for growth will also exhibit contact inhibition. - answertrue In your own multicellular body, cells with different functions have different DNA. - answerfalse The contractile vacuole of the paramecium is possibly an evolutionary precursor of the kidney. - answertrue The paramecium swims by way of using a flagella. - answerfalse In order to examine cells which are smaller than can be detected by the human senses what needs to be used? (pick the best answer). - answertehcnology Compared to bacteria which of the cell types below are not responsible for finding food - answerLymphocyte Macrophage Fibroblast A cancer cell will be anchorage-dependent for growth and immortal. - answerfalse A normal cell is anchorage-dependent for growth and mortal. - answertrue A cell that is itself an organism must have a minimum of four needs presented in lecture. List these four things. - answera cell needs to find food, shelter, reproduce, and mate In your own multicellular body, different cells in your body have a division of labor between them - answertrue What limits the paramecium from acquiring more complex functions? - answerbio molecular machines Write a few sentences that explain what limits an individual cell from becoming more complex. - answerIt has a limited number of biomolecular machines In Cell Biology what can limit the progress of science? - answertechnology A single-celled eukaryotic organism: - answerHas a limited number of biomolecular machines. Must find food, shelter, a mate and reproduce Escape from predators Comparing a single-celled eukaryotic organism with a multicellular organism such as yourself identify the major difference from the list below. - answerDivision of labor We are made up of ....% water - answer50-70% Explain how the vesicles are carried from the Golgi apparatus to the plasma membrane. - answerProteins are synthesized by ribosomes and enter the rER (rough endoplasmic reticulum) . Vesicles bud off from the rER and carry proteins to the Golgi. The Golgi modifies proteins, and then the vesicles bud off from the Golgi and carry modified proteins to the plasma membrane. The plasma membrane gets new lipids from: - answerNone of the above. The ER is contiguous with the Golgi apparatus. - answerfalse Explain the evolutionary origin of mitochondria. - answerIt is thought that a primitive proto- eukaryote engulfed a primitive proto-prokaryote good at making ATP and this organism lived inside this larger cell and began making ATP for the cell (endosymbiosis theory) What is the difference between a triglyceride and a phospholipid? - answerTriglyceride has 3 fatty acids attached to a glycerol backbone and a phospholipid has two fatty acids plus a phosphate group attached to a glycerol backbone Amino acids can be largely subdivided into two groups. What are the two groups? - answerpolar and nonpolar Facilitated diffusion uses a channel protein to let components move down their concentration gradient. - answertrue If something is soluble in water a of hydration forms around it and it is termed ... - answerhydrophillic What are the two functions of a membrane? - answerTo partition water and to compartmentalize enzymes to increase efficiency of chemical reactions Draw a phospholipid and make sure the numbers of carbons are clearly identified. - answer