Echinoderm Study Guide B1

Echinoderm Study Guide


Know the answers to the following:


A water vascular system is a trait of?
Clams are the basic food for what echinoderm?
A sea star feeds by extending what?
A sea star’s endoskeleton is made of what type of plates?
What around the mouth of a starfish helps coordinate its movements?
Tube feet  are part of what echinoderm system?
The blastopore becomes the anus in what type of organism?
Are chordates & echinoderms protostomes or deuterostomes?
Echinoderms like the sea urchin have what type of symmetry?
Are echinoderms fast or slow moving organisms?
How do echinoderms move?
Echinoderm larva have what type of symmetry?
What are the muscular sacs that force water through the water vascular system called?
In what phylum are sea squirts or tunicates?
Tunicates have a leathery what?
What animals are in the class Ophiuroidea?
How do basket stars & brittle stars differ?
What is the purpose of spines on a brittle stars arms?
Name an adult echinoderm with bilateral symmetry.
Do humans have a tail at any point during their development?
What was the function of gill slits in early chordates?
What is the flexible tube below the nerve cord in chordates called?
Where are lancelets usually found?

Be able to label the parts of the water vascular system of a starfish.

Chemistry Study Guide BI



Chemistry Study Guide


Give the name & charge for the 3 subatomic particles in an atom.
What is the smallest particle of matter that keeps all the same properties of oxygen?
What is an element?
All matter in the universe is made of what?
Where are electrons found in atoms?
Electrons will move to a higher energy level whenever they absorb what?
If atoms are packed tightly together is the substance a solid, liquid, or gas?
If the outer energy level of an atom is filled with electrons, will it react?
If an atom only has 6 outer electrons, will it gain or lose electrons to form an ionic bond?
If an atom has 2 outer electrons, will it gain or lose electrons to form an ionic bond?
Why is carbon able to form four covalent bonds with other atoms?
Are covalent bonds formed from sharing or transferring electrons between atoms?
Where are the electrons found that are involved in ionic & covalent bonding?
What is an atom called that has lost or gained electrons?
Are ionic bonds formed from sharing or transferring electrons between atoms?
If the products have less energy than the reactants in a chemical reaction, is the reaction endergonic or exergonic? 
Has energy been released or absorbed if the products of a reaction have less energy than the reactants?
Chemical reactions drive all of the activities within __________.
Sketch a graph showing an exergonic reaction. 
What helps reduce the amount of activation energy required in chemical reactions?
Biological catalysts are called __________.
Cells contain thousands of different enzymes. True or False
Has a molecule been oxidized or reduced when it gains an electron & hydrogen ion?
Oxidation-reduction reactions in organisms allow the passage of _________ from molecule to molecule.
__________ is determined by the number of particles of a substance in a solution.
If a solution is neutral, what is true about its number of hydrogen & hydroxide ions?
If a solution is alkaline or a base, does it have more hydroxide or hydrogen ions?
If a solution has a pH of 11, is it an acid or base?
Solutions with a pH less than 7, would be acids or bases?
_________ in organisms help prevent great changes in pH.