TXST BIO 1320 - Final Exam TopHat Questions – Davenport with Complete Solutions
- Treponema pallidu m is a single-celled organism that causes syphilis. It is shaped like a corkscrew & contains NO nucleus or organelles. - Plasmodium malariae is a single-celled organism that causes malaria. It has a nucleus
and several organisms. Treponema must be a ....
Plasmodium must be a ..... - answers Prokaryote Eukaryote
Which of the following is a correct relationship between a cell structure and its function? A) smooth endoplasmic reticulum = makes protein B) cell membrane = control center C) cytoskeleton = provides energy to cell D) golgi apparatus = folds & packages protein E) mitochondria = makes lipids & detoxifies drugs - answers D)
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? - answers 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... - answers 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? - answers Yes - they would stay as a bilayer but flipped, with heads clumped on the inside and tails facing the outside
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... - answers Hydrophobic - containing lipids like oils
To reduce fluidity of a membrane, what could be added to it? - answers 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? - answers 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 TXST BIO 1320 - Final Exam TopHat Questions – Davenport with Complete Solutions
happen to his red blood cells? - answers 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? - answers Yes - left
In this new scenario, solutes can cross the membrane.. Will solutes diffuse? If so, which
way will the molecules move? - answers Yes - right
In this new scenario, solutes can cross the membrane. Will net osmosis occur? If so, which way will water move? - answers No
What is one difference between facilitated diffusion & active transport? - answers Facilitated diffusion = movement from HIGH to LOW
Active transport = LOW to HIGH
What is one thing that endocytosis & exocytosis have in common? - answers Both require energy
What is one difference between endocytosis & exocytosis? - answers Endocytosis moves things into the cell; exocytosis moves things out
Which of the following has the greatest amount of kinetic energy? A) a tank of gas
B) a fully charged battery C) the cool air surrounding a car engine D) an unlit firecracker E) a moving car - answers E)
When solid sodium hydroxide is added to water, the solution gets hot. This is an example of... - answers an exergonic reaction
In endergonic chemical reactions... - answers The reactants have less energy than the product
Lactase is an enzyme used to initiate the breakdown (hydrolysis) of lactose, a sugar commonly found in dairy products. How does lactase initiate this chemical reaction? - answers Lactase lowers the activation energy
The browning of apples when cut is caused by a chemical reaction. Lemon juice can be added to sliced apples to prevent browning by creating an acidic environment. The acidity reduces growing because it... - answers Causes the enzymes driving the browning reaction to denature
You are carrying out an experiment on aquatic plants in your fish tank. You decide to expose some of the plants to green light & some to blue light to see which is the best for
- Treponema pallidu m is a single-celled organism that causes syphilis. It is shaped like a corkscrew & contains NO nucleus or organelles. - Plasmodium malariae is a single-celled organism that causes malaria. It has a nucleus
and several organisms. Treponema must be a ....
Plasmodium must be a ..... - answers Prokaryote Eukaryote
Which of the following is a correct relationship between a cell structure and its function? A) smooth endoplasmic reticulum = makes protein B) cell membrane = control center C) cytoskeleton = provides energy to cell D) golgi apparatus = folds & packages protein E) mitochondria = makes lipids & detoxifies drugs - answers D)
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? - answers 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... - answers 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? - answers Yes - they would stay as a bilayer but flipped, with heads clumped on the inside and tails facing the outside
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... - answers Hydrophobic - containing lipids like oils
To reduce fluidity of a membrane, what could be added to it? - answers 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? - answers 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 TXST BIO 1320 - Final Exam TopHat Questions – Davenport with Complete Solutions
happen to his red blood cells? - answers 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? - answers Yes - left
In this new scenario, solutes can cross the membrane.. Will solutes diffuse? If so, which
way will the molecules move? - answers Yes - right
In this new scenario, solutes can cross the membrane. Will net osmosis occur? If so, which way will water move? - answers No
What is one difference between facilitated diffusion & active transport? - answers Facilitated diffusion = movement from HIGH to LOW
Active transport = LOW to HIGH
What is one thing that endocytosis & exocytosis have in common? - answers Both require energy
What is one difference between endocytosis & exocytosis? - answers Endocytosis moves things into the cell; exocytosis moves things out
Which of the following has the greatest amount of kinetic energy? A) a tank of gas
B) a fully charged battery C) the cool air surrounding a car engine D) an unlit firecracker E) a moving car - answers E)
When solid sodium hydroxide is added to water, the solution gets hot. This is an example of... - answers an exergonic reaction
In endergonic chemical reactions... - answers The reactants have less energy than the product
Lactase is an enzyme used to initiate the breakdown (hydrolysis) of lactose, a sugar commonly found in dairy products. How does lactase initiate this chemical reaction? - answers Lactase lowers the activation energy
The browning of apples when cut is caused by a chemical reaction. Lemon juice can be added to sliced apples to prevent browning by creating an acidic environment. The acidity reduces growing because it... - answers Causes the enzymes driving the browning reaction to denature
You are carrying out an experiment on aquatic plants in your fish tank. You decide to expose some of the plants to green light & some to blue light to see which is the best for
