Show:
Eukaryotes vs. Prokaryotes
Plants vs. Animals
Cell Cycle 1
Cell Cycle 2
Surprise
100
The main difference between eukaryotes and prokaryotes.
EUKARYOTES HAVE A NUCLEUS; PROKARYOTES DO NOT HAVE A NUCLEUS.
100
The largest organelle in plants.
THE NUCLEUS.
100
Identify the two major phases of the cell cycle - in the correct order as they occur.
INTERPHASE, FOLLOWED BY M-PHASE.
100
What is the LONGEST phase of the cell cycle (hint: between the two major phases only)
INTERPHASE
100
Describe the role of histones in chromosomes.
HISTONES ARE PROTEINS THAT DNA WRAPS AROUND SO CHROMOSOMES CAN BECOME CONDENSED DURING THE CELL REPRODUCTION.
200
Overall, much smaller in size.
PROKARYOTES
200
List examples of plant cells and animal cells we have studied so far in class.
PLANT: ELODEA, TREES ANIMAL: CHEEK CELLS, SQUAMOS EPITHELIAL, (any cell named from microscope lab)
200
What is the purpose of the cell cycle?
REGULATES CELL DIVISION AND MULTIPLICATION.
200
In which step of interphase does CHROMATIN form?
G1
200
How is prokaryotic DNA different in structure from eukaryotic DNA?
PROKARYOTES - CIRCULAR DNA EUKARYOTES - LINEAR DNA
300
The category of cells that cheek and elodea cells belong to.
EUKARYOTES
300
Explain why plant cells contain a cell wall and a cell membrane.
CELL WALLS MAINTAIN THE SHAPE OF THE CELL AND THEREFORE THE OVERALL STRUCTURE OF THE PLANT. CELL MEMBRANE FUNCTIONS TO ALLOW MATERIALS TO ENTER/LEAVE THE CELL, JUST LIKE IN ANIMAL CELLS.
300
List the specific phases of cell division (hint: four phases), in the order as they occur.
G1, S, G2, M
300
In which step of interphase do SISTER CHROMATIN form?
S PHASE
300
What is the function of RIBOSOMES in cells?
TO PRODUCE PROTEINS
400
Paramecium can be categorized as having which type of cell?
EUKARYOTE
400
Which organelle responsible for producing energy do BOTH plant cells and animal cells contain?
MITOCHONDRION (pl. mitochondria)
400
During which stage of interphase does DNA duplicate?
S-PHASE
400
In which phase of the cell cycle are chromosomes visible (condensed)?
M-PHASE
400
Explain why DNA is said to be shaped like a "double helix".
THERE ARE TWO SIDES BOUND TOGETHER. IT IS A HELIX BECAUSE WHEN DNA IS TWISTED, IT IS SHAPED LIKE A HELIX.
500
The substance that scientists cannot classify as eukaryotic or prokaryotic.
VIRUS
500
What is at least ONE major structural difference between elodea cells and squamos epithelial cells?
Elodea (plant) - chloroplast, cell wall, vacuole is the largest organelle Squamos epithelial cells (animal) - no chloroplast, no cell wall, largest organelle is nucleus
500
What is the role of onocogenes and/or tumor suppressor genes in CANCEROUS CELLS?
ONCOGENES - mutated PO that accelerates cell division TS - missing TS genes leads to uncontrolled cell division
500
Before cell division, a cell begins with 46 chromosomes. How many chromosomes will the two "daughter" cells have after cell division?
46 CHROMOSOMES (or 23 pairs).
500
Describe the difference between a chromatid and a sister chromatid.
CHROMATID - TIGHTLY COILED, UNDUPLICATED CHROMOSOME SISTER CHROMATID - TIGHTLY COILED, DUPLICATED CHROMOSOME