Membrane Structure & Properties
Dye 1 passes through the membrane rapidly, but Dye 2 does not. Give two reasons why this might be the case.
What is size and polarity?
What is the main difference between simple and facilitated diffusion?
What is facilitated diffusion requires membrane proteins?
What is the difference between endocytosis and exocytosis?
What is endocytosis brings material in where exocytosis releases it out?
How many daughter cells are produced in meiosis?
What are 4 daughter cells?
What are the three phases of interphase?
What are G1, S, G2?
DOUBLE IRRELEVANT JEOPARDY: What is the only organ that can fully regenerate itself?
What is the liver?
In which type of solution does water move into the cell?
What is hypotonic?
IRRELEVANT DOUBLE JEOPARDY: What is the hardest bone in the human body?
What is the femur?
What is the main purpose of mitosis compared to that of meiosis?
What is growth and repair versus producing gametes?
A cell has 12 chromosomes in G1. How many chromosomes are present after the S phase?
What is 12 pairs of chromosomes, or 24 chromatids/chromosomes?
Phospholipids are amphipathic molecules. Explain why this property is essential for life.
What is because it allows for cellular control of what comes in and out of the cell?
True or False: "Diffusion stops once equilibrium is reached". Explain
What is false because, while the net movement of particles stops, the individual particles do not stop moving? They participate in dynamic equilibrium.
If endocytosis greatly exceeds exocytosis over time, predict what happens to the cell membrane.
What is the volume of the cell gets larger and larger?
When does crossing over/recombination happen? Briefly explain what the purpose of this step is.
What is during prophase I of meiosis? The purpose is to disperse genetic information on the chromatids from both the mother's and father's genetic information.
DOUBLE IRRELEVANT JEOPARDY: Which country has the most time zones?
What is France?
A cell living in a cold environment increases the proportion of unsaturated fatty acids in its membrane. Explain why.
What is because unsaturated tails have kinks, preventing tight packing and maintaining fluidity?
An egg's mass increased by 15% after soaking overnight. What can you conclude about the surrounding solution and water movement?
What is the solution is hypotonic, water moved into the egg?
There is a catastrophe! The cell's mitochondria was poisoned, and it is no longer working the way that it is supposed to. How would this affect cell transport?
What is all active transport would not be able to occur (or occur as efficiently) because there is a reduced amount of ATP?
DOUBLE IRRELEVANT JEOPARDY: Which mammal has the longest gestation period?
What is an elephant (22 months)?
What would happen if a cell skipped S phase but entered mitosis anyway?
What is the daughter cells would lack complete genetic information?
A scientist replaces membrane phospholipids with shorter fatty acid tails. Predict two specific effects on permeability.
What is weaker interactions between the tails and more fluidity within the membrane?
IRRELEVANT DOUBLE JEOPARDY: What is the only planet to spin clockwise?
What is Venus?
If the sodium gradient collapses, how might this affect glucose uptake in certain cells? Distinguish the type of transport this is. (Hint: think back to the cell membrane case study)
What is glucose that goes through secondary active transport, because the transport of sodium is active transport (using ATP)? Sodium's gradient then causes passive transport of glucose from the intestines into the cell.
At which stage are sister chromatids separated in mitosis? In meiosis I?
What is anaphase in mitosis, and, trick question, homologous pairs of chromosomes are split apart in anaphase I, which keeps the sister chromatids together for meiosis at this stage?
A mutation prevents centromeres from properly forming during interphase. Predict what happens during mitosis.
What are spindle fibers will not be able to attach to the centromeres, therefore leading to improper chromosome separation?