Evolution of Cells
What two organelles in plants originated from endosymbiotic bacteria-like cells?
chloroplasts and mitochondria
Common in all living cells
What are Ribosomes, Cell Membrane, Cytoplasm, and Nucleic Acid
What is the function of cholesterol inside the cell membrane?
increase membrane fluidity
The type of molecular transport that requires energy and moves molecules against the concentration gradient
active transport
Single cell, no membrane bound organelles
Prokaryote
Why are cells so small?
surface area to volume ratio limits the rate at which cells can obtain nutrients and materials and get rid of waste
These organelles produces ATP
What are mitochondria?
Which part of a phospholipid is nonpolar (hydrophobic)?
lipid tails
If a red blood cell is placed in a hypertonic solution, what will happen to the cell?
shrivel
Animals cells are _______________
Eukaryotic Cells
How do scientists believe the organelles mitochondria and chloroplast ended up inside eukaryotes?
They were engulfed (absorbed)
A cell is found in a lake that has a cell membrane, cytoplasm, and DNA. We can assume that the cell also has which of the following as well? Lysosomes, mitochondria, Golgi Body, ribosomes, hloroplast
Ribosomes
This protein transverses the phospholipid bilayer?
integra/channel protein
When sodium and Potassium is pumped in and out of a neuron, what type of transport is taking place?
active
Membrane model for animal cells
Fluid Mosaic Model
Unique charcteristic of the chloroplast and mitochondria?
Double membraned
Which organelle is involved in recycling material, especially breaking down lipids?
lysosomes
Structures on the cell that aid in transport
If a plant cell is placed inside hypotonic solution, what will happen to the cell?
swell, or turgor pressure
The solute outside the cell in the beaker is higher than the solute inside the cell. The solution is __________
What is Hypertonic
What evidence supports the Endosymbiotic Theory?
mitochondria has its own dna, chloroplast has its own DNA, mitochondria and chloroplasts have double outer membranes and can self-replicate
Cell walls are not found in which of the following: fungi, plants, bacteria, animal cells
This is the purpose of folded membranes in a cell
What is increase the surface area
Penicillin is toxic to new bacteria cells because it prevents cell wall formation, causing the cells to burst. This indicates that the bacteria live in a ________________ solution.
hypotonic
Facillitated diffusion is _____________ transport
Passive