Cell BrainPop Quarter 2
Quarter 2 Brain Pop Quizlets
Terms in this set (34)
Where do cells get the oxygen, water, and nutrients they need to function?
from the bloodstream
What might happen if cell membranes did not have pores?
Substances would not be able to move in and out
In which direction do particles naturally diffuse?
Down Concentrations gradients ( high concentration to lower concentration)
What are the main differences between active transport and passive transport?
Active transport requires a cell to use energy; passive transport does not.
In passive transport substances move naturally from areas of __ concentration to __ concentration.
high to low
What is the relationship between cells and tissues?
tissues are comprised (made) of cells.
The majority of a cell's interior is comprised of:
The word "mitosis" refers to the process of:
How are eukaryotic cells different from prokaryotic cells?
Eukaryotic cells have nuclei: prokaryotic cells don't.
Diffusion is the natural movement of molecules from:
areas of high concentration to areas to areas of low concentration.
What causes diffusion?
The constant, random motion of molecules
From fastest to slowest rate of diffusion, which of the following (solid, liquid, gas) is in the correct sequence?
gas, liquid, solid
Why is diffusion so important in biology?
It allows substances to move across cell membranes
How does your body grow as you get older?
your cells divide, producing new cells
Mitosis begins in which cell organelle?
How does the number of chromosomes in a daughter cell compare to the number of chromosomes in a parent cell?
the daughter cell has the exact same number of chromosomes
What is a chromosome?
a pair of DNA molecules
How is mitosis in plants different from mitosis in animal cells?
Plant cells have rigid cell walls and no centrioles.
What are the four stages of mitosis?
prophase, metaphase, anaphase, and telophase
What happens at the very end of mitosis?
The cell membrane splits
Where do duplicated chromosomes line up during metaphase?
In the center of the cell
What do the offspring (children) of asexual reproduction have in common with the parents?
everything- they are clones
How does a sperm or egg cell differ from all the other cells in the body?
Sperm and egg cells contain only half the number of genes as the other cells
What is a eukaryote?
A creature with nuclei in its cells
What is mitosis?
When body cells divide
How do prokaryotic cells replicate?
through binary fission
In a budding organism, the offspring (child) starts out as:
How is regeneration a form of asexual reproduction?
A creature that's been split in half can grow into two new organisms.
What do all protists have in common?
Their cells have nuclei
What might happen if a protist was missing its flagellum?
It wouldn't be able to move.
What can you infer about protozoans from the fact they are single-celled organisms?
They probably can't be seen without a microscope.
How does an amoeba move?
It uses pseudopods.
The cell membrane is semi-permeable. What does "permeable" mean?
able to be penetrated
The natural spreading of particles through a liquid or gas is called:
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