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50 Cards in this Set
- Front
- Back
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population size is affected by:
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birth rate, death rate, immigration, and emigration
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Exponential growth
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a slowly growing population
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carrying capacity on a population time graph
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the leveled off part after the J curve
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the J curve on a graph
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the bump before the carrying capacity
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logistical growth "s-curve"
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the quick growth in population
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Density dependent factors
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competition, predation, parasitism, and disease
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Density independent factors
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weather, flooding, earthquake, damming a river, fires, clear-cutting
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What does water always want to do?
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Water always wants things to have more water
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Hypotonic
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contains a higher water concentration (mo wato) it has fewer solutes
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Hypertonic
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contains a lower water concentration it has more solutes
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Isotonic
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contains an equal water concentration (the same level of solutes)
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What do population pyramids indicate?
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the population by gender and age
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If a population pyramid is thicker at the top it is...
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declining like Japan
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If a population pyramid is equaly thick through out it is...
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stable like Italy
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If a population pyramid is thick all of a sudden at the bottom
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rapid growth like kenya
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If a population pyramid is only a little thicker at the bottom
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slow growth like USA
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The populations grow more rapid in ____ countries than _______ countries
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less developed, more developed
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what does the cell membrane do?
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it serves as a barrior to select what enters and exits the cell
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what is the cell membrane comprised of?
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phospholipids and proteins
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What is a cell wall comprised of?
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cellulose strands in plants/some algae. Cell walls that aren't formed by cellulose are in some prokaryotes and some fungi
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What is the rigid structure that protects a cell?
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Cell wall
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What are three differences between animal and plant cells?
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-Cell Wall
-Chloroplasts -Size of Vacules |
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What is Cytoplasm (cytosol)?
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The liquid meduim where cell organelles are suspended
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What is in the cytoplasm besides the cell organelles?
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mostly water and some ions and waste
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What does the nucleus contain and do?
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DNA/RNA and its the cell's control center
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What's special about the nucleus's membrane?
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Its highly selectivly permadable, and it is a double membrane
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Where is the site of protein synthesis?
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ribosomes
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The Endoplasmic Reticulum serves as?
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a network of membrane tubes used as a transport network
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Whats the difference between the rough ER and the smooth ER?
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rough has ribosomes attached to it
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What does the smooth and rough ER transport
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rough=proteins (hence has ribosomes)
smooth=materials other than protiens like lipids and carbs |
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The Goglgi Body is a
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system of membranes that is used as a packing site and synthosizes lysosomes
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Mitochondria is the site of ____ production hense called the ______and whats the name of its inner membrane?
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ATP, cell's powerhouse, critae
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What do Lysosomes contain?
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digestive enzymes
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What's the purpose of a vacule?
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To be chambers that store starches, wastes, and water
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What do is the main function of chloroplasts and what do they contain?
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chlorophyll and it is used to perform photosynthesis
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What do microtubules do?
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They serve as cylinders of proteins that support cilia, flagella, and other things in the cytoplasm...you can simplify
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What do Microflaments serve as?
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Strands of protein in the cytoplasm that cause movement in cell organelles
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What do cilia do?
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They aid locomotion adn protection and they are hair-like
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What do flagella do?
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The aid locomotion just are bigger and less abundant than cilia
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what is osmosis?
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the diffusion of water
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Why is it better for cells to be small?
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The greater the surface area, the small the volume to surface area ratio is
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Faciltated Diffusion
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-doesn't need energy
-needs a protein carrier -goes with the concentration gradient |
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Active transport
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-requires energy
-going against the concentration gradient -requires energy (ATP) |
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If the cell has enough glucose does it stop storeing it?
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No it gets as much as it can
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label a phospholipid bilayer in your head
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top cirles are glycerols that are hydrophilic and strings in the middle are 2 fatty acids that are hydrophobic (afraid of water)
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What are lipids made of?
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CHO
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What are phospholipids made of?
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CHOP
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What is the concentration gradient?
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ask mr. Koolen
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What is it when something is transferred across a membrane
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diffusion
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what is the cell theory?
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-all living things are made of cells
-cells are the basic units of structure and function in living things -new cells are produced from existing cells |
