Lab Practical Biology
E + S --> ES --> E + P is what type of reaction and what does each letter stand for?
Enzymatic reaction E= enzyme S= substrate ES= enzyme-substrate complex P= product
E + S --> ES --> E + P is what type of reaction? What does each letter stand for?
Enzymatic reaction Enzyme + substrate -> enzyme substrate complex -> enzyme + product
__________ are organic catalysts that speed metabolic reactions and are specific to one type of reaction
Enzymes
animals, plants, fungi, protists are examples of:
Eukaryotes
Based on your observations, do all cells have the same size? Support your answer.
No, some of the cells were very small whereas other were large
Are the nuclei always found in the same place within different types of cells? Support your answer.
No, some of the nuclei were central and some were on the side
Based on your observations, do all cells have the same shape? Support your answer
No, the cells had different shapes. Some appeared round and others were curly.
Bacteria and related microorganisms are examples of:
Prokaryotes
Two major divisions into which all cells fall:
Prokaryotic and eukaryotic
Enzymes are specific because they have a ________ that accommodates the shape of their substrates
Shape
The reactants in an enzymatic chemical reaction are called ________
Substrates
What cell structures are common to all cells?
The cell membrane and cytoplasm
What cell structures are found only in eukaryotic cells?
The nucleus and organelles
What cell structure might you be able to compare to the main (principals) office in your school? Explain your answer.
The nucleus because they control the school and what it does
Explain what has happened to the limp potatoes.
The potato in salt water had its water molecules move out of the potato causing it to shrivel up or become hypertonic. There is more salt outside the potato.
Observe the demonstration of potato slices soaking in distilled water and salt water. Which potatoes are crisp? Which are limp?
The potato in salt water is limp. The potato in distilled water is crisp
What is diffusion?
The tendency of a substance to move down its concentration gradient from high to low
Why do cells have different shapes and sizes?
To have different purposes and functions; allows them to thrive in their environment
_______ are the basic units of structure and function of all living things
cells
__________ are units of structure and function of all living things
cells
________ are cells that contain a nucleus and membrane-bound organelles
eukaryotes
animals, plants, fungi, protists are all examples of:
eukaryotes
Contain a nucleus and membrane-bound organelles
eukaryotic cells
What is the purpose of the "Characteristics of Prokaryotic and Eukaryotic Cells" lab?
examine differences between prokaryotic and eukaryotic cells and be able to use these differences to classify an unknown specimen
All the chemical reactions that occur in a cell are collectively called
metabolism
What is osmosis?
movement (diffusion) of water
Bacteria and related microorganisms are examples of:
prokaryotes
__________ are cells that lack a nucleus and membrane-bound organelles
prokaryotes
Two major divisions into which all cells fall:
prokaryotic and eukaryotic
Lack a nucleus and membrane-bound organelles
prokaryotic cells
Skin cells seem to fit together like pieces of a jigsaw puzzle. How is this arrangement of cells helpful to an organism?
protects your body from infection by being tightly packed together
In all chemical reactions the ________ are molecules that undergo a change which results in the __________
reactants, products
Enzymes are specific because they have a ________ that accommodates the shape of their substrates
shape
