Organelles
Which organelle is a major producer of ATP, and is found in both plants and animals?
Mitochondria
What is more beneficial - high SA:V ratio, or low SA:V ratio?
High SA:V ratio
Which of the following is not a component of the cell membrane?
Phospholipids
Cellulose
Proteins
Glycolipids
Cellulose
A molecule moves from an area of higher concentration to an area of lower concentration. Which process best describes the movement of this molecule?
Passive transport, diffusion
What type of water potential does water travel towards?
Low water potential
Water moves from high water potential to low water potential
This organelle is able to break down macromolecules, and plays a role in apoptosis.
Lysosomes
What is a piece of evidence that shows eukaryotes and prokaryotes share a common ancestor?
All eukaryotes and prokaryotes contain ribosomes
Which types of molecules pass through the cell membrane unassisted most easily?
If ATP breakdown (hydrolysis) is inhibited, what type of transport will be inhibited?
Active transport
Which of the following correctly describes the movement of water?
Cell: 0.5 M gains water from Solution: 1.0M
Cell: 0.5 M gains water from Solution: 0.5M
Cell: 1.0 M gains water from Solution: 0.5M
Cell: 0.5 M lose water to Solution: 0.5 M
Cell: 0.5 M gains water from Solution: 1.0M
What is the function of ribosomes?
Protein synthesis in the cytoplasm or at rough ER
Why is it beneficial for some cells to have small, finger-like projections that extend into the surrounding extracellular space?
It increases surface area, therefore increasing SA:V ratio
An animal cell that lacks glycolipids and glycoproteins in its plasma membrane would likely be unable to carry out what functions?
Cell recognition
When some bacteria are exposed to antibiotics, the bacteria use ATP to pump the antibiotics out of the cell. What process is the bacteria performing?
active transport
What is the function of a contractile vacuole?
Organelle that stores excess water and pumps it out of the cell
What is a functional difference betweehn the Rough and Smooth ER?
Rough ER: synthesize and package proteins
Smooth ER: synthesize and package lipids
A spherical bacterial cell has a radius of 5 um and a different spherical cell has a radius of 100 um - which cell is able to more efficiently exchange materials with the external environment?
What is the most likely location of cholesterol in animal cells?
Embedded in cell membrane
Describe two types of passive transport.
Diffusion - movement of mol from high to low conc, move freely thru the membrane
Facilitated diffusion, movement from high to low conc, require help of membrane proteins
What is the solute potential of a solution with a solute concentration of 0.25 moles per liter, at a temperature of 37oC. The ionization constant of the solute is 1.
-6.44
What organelles do proteins pass through for protein synthesis to the extracellular environment? (5)
Ribosome
Rough ER
Golgi
Vesicle
Cell Membrane
Which of the following is NOT evidence that supports the endosymbiosis hypothesis?
Mitochondria and chloroplasts have their own circular DNA
Mitochondria and chloroplasts have their own ribosomes
Mitochondria and chloroplasts reproduce by binary fission
Mitochondria and chloroplasts are found in all eukaryotic cells
Mitochondria and chloroplasts are found in all eukaryotic cells
Phospholipid, cholesterol, integral protein, transmembrane protein, gylcolipid, glycoprotein
...
What is the difference between endocytosis and exocytosis?
endo into
exo out
Four solutions of covalent compounds are in beakers that are open to the atmosphere. Which of the following solutions has the highest water potential?
0.5M glucose at 21oC
0.75M fructose at 21oC
1.0M sucrose at 21oC
1.25M lactose at 21oC
0.5M glucose at 21oC