TXST BIO 1320 - Final Exam TopHat Questions – Davenport with Complete Solutions
- Treponema pallidum is a single-celled organism that causes syphilis. It is shaped like a corkscrew &
- Plasmodium malariae is a single-celled organism that causes malaria. It has a nucleus and several
- smooth endoplasmic reticulum = makes protein
- cell membrane = control center
- cytoskeleton = provides energy to cell
- golgi apparatus = folds & packages protein
- mitochondria = makes lipids & detoxifies drugs - Correct Answer D)
contains NO nucleus or organelles.
organisms.Treponema must be a ....Plasmodium must be a ..... - Correct Answer Prokaryote Eukaryote Which of the following is a correct relationship between a cell structure and its function?
Not every cell has the same amount of organelles. Some cells have more of one organelle while others have less. Now that you know what chloroplasts do, which cells will likely have the highest amount of chloroplasts? - Correct Answer Cells on the top of the leaves You observe a few cells under a microscope and you can clearly see cell walls, central vacuoles, and connections between cells that allow for communication. These connections must be... - Correct Answer Plasmodesmata Phospholipids take a specific bilayer shape in water. Would they act differently if they were placed in oil instead of water? If so, how would they change? - Correct Answer Yes - they would stay as a bilayer but flipped, with heads clumped on the inside and tails facing the outside 1 / 2
Suppose that cell membranes were single layers of phospholipids with heads facing the outside of the cell. The inside of this hypothetical cell would have to be... - Correct Answer Hydrophobic - containing lipids like oils To reduce fluidity of a membrane, what could be added to it? - Correct Answer Cholesterol Insulin is a protein that is released by the pancreas in response to high levels of blood glucose. It binds with certain cells in body and signals them to change their behavior (allowing glucose to enter), but insulin doesn't enter the cell itself. What kind of protein does it likely bind to? - Correct Answer Receptor proteins Imagine that a sailor is adrift on the ocean in a life raft. Dying of thirst, he gives in to temptation to drink salty sea water. After this salt is absorbed into his blood, what will happen to his red blood cells? - Correct Answer The cells shrivel up because water leaves them In the scenario below, solutes can NOT cross the membrane..Will net osmosis occur? If so, which way will water move? - Correct Answer Yes - left In this new scenario, solutes can cross the membrane.. Will solutes diffuse? If so, which way will the molecules move? - Correct Answer Yes - right In this new scenario, solutes can cross the membrane. Will net osmosis occur? If so, which way will water move? - Correct Answer No What is one difference between facilitated diffusion & active transport? - Correct Answer Facilitated diffusion = movement from HIGH to LOW Active transport = LOW to HIGH What is one thing that endocytosis & exocytosis have in common? - Correct Answer Both require energy What is one difference between endocytosis & exocytosis? - Correct Answer Endocytosis moves things into the cell; exocytosis moves things out Which of the following has the greatest amount of kinetic energy?
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