<p>Yeah that's right--two photoperiodism, 2 mutualism.</p>
<p>@isabella
there were 2 mutualism the bird and something else if im not wrong
and probably 2 periodism from the other bundle...( i skipped one of the periodism..wasnt sure )</p>
<p>hmm... i didn't know tay sachs had to do with lysosomes, i didn't think college board would put something hard like that.</p>
<p>for biology-m, the point where the 2 species can breed, wasn't it where the lines intersected?</p>
<p>no!
the highest frequencies 'cause those species were mating more when the frequencies were greater .. if im not wrong</p>
<p>but the greater their frequencies, the further apart the lines were, thus they would not be attracted to each other because i thought the similar pulses matched... but i'm not sure</p>
<p>wasnt that species graph about grasshoppers or something in the general section? and i too said that it was where the lines interesected cause the only way two different species can mate is when they have the same mating "call" frequencies so it seems like one from a different species is actually from the same</p>
<p>Lysosomal Storage Diseases
Lysosomal storage diseases are caused by the accumulation of macromolecules (proteins, polysaccharides, lipids) in the lysosomes because of a genetic failure to manufacture an enzyme needed for their breakdown. Neurons of the central nervous system are particularly susceptible to damage. </p>
<p>Most of these diseases are caused by the inheritance of two defective alleles of the gene encoding one of the hydrolytic enzymes. </p>
<p>Examples: </p>
<p>Tay-Sachs disease and Gaucher's disease — both caused by a failure to produce an enzyme needed to break down sphingolipids (fatty acid derivatives found in all cell membranes).</p>
<p>I agree with Isabella and Chatterbox.</p>
<p>its lysosome :(</p>
<p>@misschat, j_isab: I am not very postive about this. But it said that when frequencies are high they mate a lot, it said nothing about frequencies being equal for a successful mating.. anyway this might be more specific than what i was thinking</p>
<p>yeah i got like 15 for the mating ?</p>
<p>Hey am i going crazy or did u see the answer as D??? </p>
<p>What is NOT a characteristic of a bird
A 4 chambered heart
B. respitory system
C. amniotic egg
D. internal reproduction
E. teeth</p>
<p>i dont remember the number but how did you get 15?</p>
<p>It's actualyy ETS fault that they put the above ? because actually, birds used to have teeth - they should have specified >>>
current birds or old birds...
lol im going crazy</p>
<p>It's definitely E.</p>
<p>I looked at the intersection point and went down all the way to 15 degrees to find when they mate</p>
<p>yea, the intersection was 15</p>
<p>OHHHHHHHHHHHHHH i c why it is E now...argghh i hate myself.</p>
<p>the enzyme to break down carbs was in two places, right? i think i said mouth and small intestine, but was there a mouth and stomach choice?</p>
<p>i'm pretty sure it's mouth and small intestine~ there was a mouth and stomach choice but the stomach starts protein breakdown</p>