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Chapter 7:Cell Structure and Function
Terms in this set (39)
Small particles of RNA and protein on which proteins are assembled using instructions from DNA
An internal membrane system where lipid components of cell membranes are made
Stack of membranes that modifies,sorts,and packages proteins and other materials for storage or release
Filled with enzymes used to break down carbohydrates into smaller molecules
Saclike structures that store materials
Convert energy from sunlight into chemical energy that is stored in food
Convert chemical energy stored in food into a form that can be easily used by the cell
Involved in spindle formation during cell division
Holds genetic information (DNA) in a double membrane
Provides support for the interior of the cell
Location for RNA synthesis
Supports and provides a barrier to the outside
Which of the cell parts and organelles listed above are not found in both animal and plants cells?
Chloroplast and Nucleus
List three parts of the cell theory.
>All living things are made up of cells
>Cells are the basic units of structure and function in living things
>Now cells are produced from existing cells
What are three differences between prokaryotic and eukaryotic cells?
>Eukaryotic can be unicellular
>Prokaryotic has no organelles
>Eukaryotic cells evolve after nucleus
What three structures are unique to plant cells?
Cell wall, chloroplasts, centriole vacuole
Label the cells below as grass cells, E. Coli cell, and or grasshopper cell based on the organism they are most likely to be found in.
> E.Coli Cell
> Grass Cell
Which cell from #17 is classified as a prokaryotic cell? Which are Eukaryotic cells?
The coli cell is prokaryotic Cell, the grass and grasshopper cells are Eukaryotic
Complete the following flowchart with the correct hierarchy of living things.(smallest to largest)
ATOMS>MOLECULES >CELL >TISSUES >ORGAN >ORGAN SYSTEM
Write the function for each part of the cell membrane
Proteins-regulation of the body tissue/ organs
Phospholipid molecule- makes up cell membrane
Cholesterol - keeps the cell membrane firm
Glycoprotein- forms hydrogen bonds to help stabilize membrane
Glycolipid- helps the cell recognize each other
Identify the parts of the phospholipid molecule below as hydrophobic and hydrophilic.Which part of the molecule is charged or not charged? Polar or non-polar?
Circle part-hydrophilic- polar charge
String part- hydrophobic- non- polar not charged
Phospholipids make up the majority of the cell membrane and are termed sympathetic molecules
The plasma membrane is described as a fluid- mosaic model because it like a stationary puzzle; the membrane is rigid and still.
Water and oxygen diffuse across the wet phospholipid bilayer but ions and carbon dioxide move through proteins.
Exocytosis occurs when vesicles fuse with the plasma membrane and release their contents outside the cell
Osmosis is the diffusion of water from high to low concentration
During phagocytosis, usually lipids are brought into the cell through vesicles
During the process of active transport, substances like sodium ions require energy to move from a low to high concentration
Label each each effect of osmosis on a red blood cells as hypertonic,isotonic, or hypertonic
Hypertonic - shriveled cells
Isotonic- normal cells
Hypertonic- Cells swell and eventually burst
Helps transport materials between different parts of the cell
Some substances can pass across them and other's cannot
When cells are transported across the cell membrane
Collect water molecules through the membrane
When molecules of a solvent pass through a membrane
net movement of water out of or into a cell produces a force
Constant internal physical and chemical conditions
Is a group of similar cells that performs a particular function
Group of tissues working together
A group of organs that work together to perform a specific function
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