WorksheetsPatriot Day 3: Cell Communication and Mitosis
Total questions: 15
Worksheet time: 8mins
What stage of the cell cycle is "diversion" where cells are not dividing but taking care of daily life
S
G1
G0
M
Which of the following statements regarding binary fission is not true
during binary fission the cellular membrane is divided
bacteria undergo mitosis
during binary fission dna is copied and divided
bacteria have a circular chromosome instead of a linear chromosome
What stage of mitosis includes the following: spindle begins to form, nuclear envelope breaks down, chromosomes condense
prophase
metaphase
anaphase
telohphase
Which of the stages of mitosis includes the following: chromatids split apart at the centromere and are pulled to opposite polls by the kinetochore
prophase
metaphase
anaphase
telophase
Which of the stages of mitosis include the following: chromosomes line up at the center of the cell and the kinetochore attaches to the spindle
prophase
metaphase
anaphase
telophase
choose an inccorrect statement
Cells exhibit anchorage dependence meaning, they are in contact with a base layer prior to dividing
Cancer cells exhibit anchorage and density dependence
Cells prevent crowding through density dependence signaling
all statements are correct
Ras is a proto-onogene: which of the following statements is not true of Ras
Ras acts as an accelerator
a mutated form of Ras is an oncogene
Ras acts as a brake
Ras promotes cell division
Which of the following is not one of the three stages of the signal transduction pathway?
signal
reception
transduction
response
What type of signaling includes apocrine signaling?
direct
endocrine
long distance
local
steroids are made from cholesterol, therefore which of the following is true
they are non polar and will bind intracellularly
they are non polar and will bind extracellularly
they are polar and will bind intracellularly
they are polar and will bind extracellularly
A chemical message is known as
a phosphatase
a phosphate
a ligand
a charge
Plasmodesmata and Gap Junctions are examples of
endocrine signals
paracrine signals
apocrine signals
direct signals
Select all true responses regarding receptors
receptors are proteins
receptors are lipids
receptors are ligands
receptors undergo a conformational change when bound to ligand
there is an area of the protein that interacts with the ligand
Choose all correct statements. During transduction
the signal is received
signal is transmitted through phosphorylation
signal can be amplified
signal is terminated
genes are turned on
Second messengers carry a signal from the inside of the membrane through the cytoplasm. Give an example
cAMP
norepinephrine
testosterone
Ras
