May SAT II Biology E/M

Test Preparation SAT Subject Test Preparation
141

<p>Compiled List (and my own answers that i remember)</p>

<p>Classification</p>

<p>First Group
Mitochondria presence = eukaryotes, but not prokaryotes
Plasma membrane = all
Cell wall = plants, but not animals
Ribosomes = all</p>

<p>Second Group
Chance of having a girl = 50%
Number of generations to get AABB and aabb mix to have 9:3:3:1 phenotype ratio = 2
Number of phenotypes from Aa and aa mix = 2
Number of gametes possible from AaBb = 4
Number of chromosomes of fly cell right before mitosis (haploid number = 4) = 16</p>

<p>Third Group
Mother passing antibodies to fetus = passive immunity
the clumping of anti B antigens with type B blood = agglutination
Release of histamines = allergic reaction
Small pox virus exposure = active immunity</p>

<p>Last Group
Pyruvic acid = glycolysis
Lactic acid = fermentation</p>

<p>Core Section Multiple Choice
To see if rabbit is recessive for white hair=cross with white rabbit and look at offspring
II and IV (Hydra, jellyfish) for only one opening (mouth or something like that)
Two species benefit = mutualism
Islands split, animals different = evolution differs for small populations
Bat wings, fly wings = convergent evolution
Sex-linked recessive (color blind dad, wife husband not)=kid has 0% of getting it
Species is smaller than genus (in overlapping circles)
Colon=water absorption
Changes in alleles = mutation
Egg is fertilized in the oviduct (fallopian tubes)
Starch solution bag = graph looks like decreasing first, then stabilizing
Eardrum = basilar membrane
DDT dangerous = builds up in higher trophic levels
Ostrich=warm blooded animal (unlike trout, lizard, salamander, snake)
fat gives off more energy per gram than any other thing
urea does not provide energy</p>

<p>Carrot Section
Becomes flexible=cell membranes shrink away from the walls
One on counter sprouts = higher metabolic rate
For experiment with control in light = clear and black plastic bag
Paper bag = carrots become flexible faster than ones in plastic bags</p>

<p>Bacteria Plate section
Most effective = tetracycline (third one)
Control = bacteria on nutrient agar without antibiotics
Penicillin has bacteria forming on white spot=resistant to penicillin strain of bacteria</p>

<p>Earthworm Neuron section
If y is broken, segment 1 will not react when segment three is touched
If neuron n degrades or disappears, segment 1 muscle will not react to touch
Two answers were short three letter combinations tracing the pathways</p>

<p>Zygote Section
Type of organism = angiosperm
Process from Stage 1 to 2 = mitotic division
Which type of human disease = cancer
Presence of auxin = enlargement of cells only (II only)</p>

<p>Food Web Section
Hawk = tertiary consumer
Shrub/grass = most energy</p>

<p>Molecular Bio Section</p>

<p>All are true about mRNA except=double stranded
Gametes are formed by = meiosis
Organelle without membrane = nucleolus
Medelevian cross = Aa with aa
Bean seed mixed = lipids
Vitamins important = act as coenzymes
Actin-myosin thing power by = ATP</p>

<p>Pea Plant Respiration Section
Control = 25 degrees Celsius
Percentage at 7.5 hrs = 125%
Plant dies in 8 hours = 50 degrees Celsius
Why does respiration rate decrease at hour 3 in the 0 degree Celsius one=lower temperature=lower reaction time
Graph of respiration rate of 40 degrees Celsius = a slow increase and then flat line</p>

<p>Activation Energy Section
EA is lowered by enzyme activity
EA is where the bonds between different compounds are made (unstable)</p>

<p>Any comments, remember any more questions?</p>

142

<p>does anybody remember the question with a color blind person mating with a normal person? the answer was the percentage of chance of a color blind son. i forgot what it was. does anybody have the answer for this?</p>

143

<p>^ that’s 50%</p>

<p>**anyone remember the flies question? it was asking what this expermient best demonstrates… that </p>

<p>A) the flies live independently of each other or
D) that fly B competes better in the environment**</p>

<p>i was thinking if fly B was the better comeptitor, houldn’t that mean that there would be comeptitive exclusion and then fly A’s population would go to 0, instead of levelling off at 100 that was shown in the experiment? </p>

<p>as for the **embryo question, the process from stage 1 to stage 2. its not differentiation? the cells are different sizes, but is that still mitotic division? **</p>

144

<p>3 confirmed wrong already… :frowning: assuming i get the flies and differentiation/mitosis quesion wrong.</p>

145

<p>and what was this question? </p>

<p>Sex-linked recessive (color blind dad, wife husband not)=kid has 0% of getting it</p>

146

<p>wait really? i thought the wife’s dad had been color blind, so she’s a carrier… so the son does have chance of getting it?</p>

147

<p>No, the child of those two people would have a 25% chance of being color blind, because color blindness is a sex-linked trait on the X chromosome. So the (not color blind) mother with the color blind father would have one X chromosome with the trait, one without. The father, who isn’t color blind, would have one X chromosome and one Y chromosome, neither affected. So, the possible offspring could be XX (both unaffected) XX (one affected, one unaffected - the unaffected codes “not color blind”, so this child isn’t color blind.), XY (both unaffected), and XY (with the X affected, and no corresponding “not color blind” other X. This child will be color-blind.)</p>

148

<p>im pretty sure the answer was 50%. i think the question was asking for the chance of a son to be color blind. son is XY. mother was carrier. son has 50-50 chance of getting the affected allele from mother. one X will make son color blind.</p>

149

<p>Red-winged/white-winged flies, there was I think either a 50% chance of white males and 50% chance of white females, or 100% red wings. I don’t remember the numbers.</p>

150

<p>yea it asked for the probability of a son having it. </p>

<p>does anyone remember the experment with the flies? with fly species A and fly species B. </p>

<p>what was the answer to that? that the experiment showed fly species B competed better, or that the two flies lived independent of each other? </p>

<p>Also, what was the answer to the embryo –> stage 1 question? was it mitosis or differentiation? Was it mitosis even though there were like differently sized cells?</p>

151

<p>I put mitosis. The cells only replicate; they don’t yet differentiate to take on different functions</p>

152

<p>pretty sure it was species B competed better in the environment. and mitosis. i think differentiation is when the zygote seperates into specialized layers.</p>

153

<p>does anyone have the answers for economy?..</p>

154

<p>I predict a 770. 4 confirmed wrong.</p>

155

<p>E section-ocean, ecological succession of trees (birches, etc), carrying capacity</p>

<p>not true about rainforest- the temperature fluctuates</p>

<p>help me out lol bad short-term</p>

156

<p>I’m pretty sure I got -7 total. Mid or low 700’s? I’m probably going to have to retake this next year. :/</p>

157

<p>The answer for the first question on the E section, which would lead to the largest population, was cereal, vegetables, and fruits right? All the others had to do with meat or dairy products.</p>

158

<p>yea thats what i put
E section-ocean, ecological succession of trees (birches, etc), carrying capacity</p>

<p>ocean- least productivity in abyssal, something about (cold, no light, high pressure)</p>

<p>trees- 200 joules located on graph</p>

<p>carrying capacity- competition caused species B to die off, if both populations double it doesnt change?</p>

<p>not true about rainforest- the temperature fluctuates</p>

<p>loargest population- cereal, veggies, and fruits</p>

159

<p>what was the question where the answer was “ocean” for the E section?</p>

160

<p>it was just a diagram with the ocean with like 5 different parts there were like 2 questions on it</p>