<p>The answer is C. Wouldn’t that be the umbilical cord?</p>
<p>its c. the placenta actually produces progesterone i believe…(somebody back me up)</p>
<p>What is the hypothesis of Spontaneous Generation? Choose the best answer.
a. Cells don’t always come from pre-existing cells.
b. All cells don’t come from pre-existing cells.
c. All living things are comprised of cells.
d. All living things are not comprised of cells.
e. none of the above</p>
<p>b… but this is a weird question because all the answers deal with cell theory… ummm
Spontaneous generation is organism come from nonliving things.</p>
<p>Questions 92-95</p>
<p>A) Transcription
B) Translation
C) Transformation
D) Replication
E) Reverse transcription</p>
<ol>
<li><p>Process in which a protein is assembled at a ribosome</p></li>
<li><p>Process in which naked DNA is taken up by a bacterial or yeast cell.</p></li>
<li><p>Process that results in the production of DNA, from an RNA molecule.</p></li>
<li><p>Process in which RNA is produced by using a DNA template.</p></li>
</ol>
<p>@supertyphoon. B? I’ve never heard of this before. </p>
<p>@facedownclap
92. B
93. C
94. E
95. A</p>
<p>Explain the major differences between prokaryotes and eukaryotes</p>
<p>Prokaryotes have a cell wall made of petidoglycan, and lack a nucleus. Also, Prokaryotes have a circular “ring” of DNA, and larger ribosomes. </p>
<p>Eukaryotes have smaller ribosomes, and a nuclear membrane. Also, the cell walls of eukaryotes are made of cellulose in plant cells. Eukaryotic cells have chromosomes, and their DNA is organized using histones.</p>
<p>You could also talk about protein synthesis, but that’s getting into the process details.</p>
<p>In a mammalian embryo, the somites give rise to</p>
<p>a. The notochord
b. The central nervous system
c. The lining of the mouth
d. The eyes
e. Muscles and vertebrae</p>
<p>(this was a weird question I saw in the 1994 AP bio test)</p>
<p>What type of membrane is always involved in osmosis?</p>
<p>a. semi-permeable membrane
b. water permeable membrane
c. super permeable membrane
d. impermeable membrane
e. does not matter what type of membrane</p>
<p>@education, I have NO idea. Can someone explain this to me? </p>
<p>@supertyphoon, i think its b</p>
<p>@supertyphoon I think it’s A right? And sinohellenic, the justification is that things besides water can osmose, such as ethanol, etc… I think?</p>
<p>And also, somites are just the patches of mesoderm on the side of a developing embryo, in a nutshell. So, as you probably know, mesoderm develops into the skeletal and muscle systems, and so the answer is E.</p>
<p>Hope that helped!</p>
<p>I thought that osmosis was diffusion that applied ONLY to water</p>
<p>osmosis does only apply to water but water can pass through a semi-permeable membrane.
here is a SAT Subject Bio Question </p>
<ol>
<li> How is the Calvin cycle similar to the Krebs cycle?</li>
</ol>
<p>(A) The starting compound is regenerated at the end of the cycle.
(B) Multiple molecules of ATP are produced.
(C) Both occur in mitochondrial inner membranes.
(D) Both produce oxygen gas.
(E) Each is present in all prokaryotes.</p>
<p>Would it be B? </p>
<p>How about this plants question?</p>
<p>Signal transduction in plants always:</p>
<p>A. does not begin with a hormone binding a receptor at the
cell surface.
B. results in a change in gene expression, either at the
level of transcription or translation.
C. involves molecules and pathways that are not
present in every cell.
D. does not involve communication between cells and/or
communication of the environment with one or
more cells
E. all of the above</p>
<p>@Facedownclap. Is it A? Because the calvin cycle regenerates rubisco, and krebbs regenerates oxyloacetate.</p>
<p>@supertyphoon. Is it C?</p>
<p>B is the best answer. </p>
<p>How about this one?</p>
<p>Which of the following does every “imperfect” flower have?</p>
<p>A. sepals, petals, stamens, and carpels
B. petals, stamens, and carpels
C. sepals and petals
D. one or more ovules
E. none of the above</p>
<p>Is it C because imperfect flowers each only have one kind of reproductive organ (stamens or carpels)?</p>
<p>Yes, it’s C. For perfect flowers it would be A. </p>
<p>How about this one?</p>
<p>Speciation __________. </p>
<p>a. is the process by which new species arise.
b. maintains constant biological diversity over time.
c. requires periods of evolutionary stasis.
d. all of the above.
e. none of the above.</p>
<p>I’m gonna guess A
Here’s a question…
During prophase of mitosis, nuclear DNA is in which of the following forms/
A-daughter chromosomes
b-chromatin
C-chromosomes consisting of 2 sister chromatids
D-single sister chromatids
E-single linear chromosomes</p>
<p>^C?</p>
<p>Which of the following is an example of active transport across a membrane?
A. The movement of water from a nephron into the collecting duct of the kidney.
B. The movement of glucose by facilitated diffusion into a liver cell.
C. The movement of water from the inside of a cell into a surrounding hypertonic medium.
D. The movement of Na+ into a neuron as a nerve impulse is generated.
E. The movement of H+ into a thylakoid disc during photosynthesis.</p>
<p>Anyone wanna hook me up with some Bio tests? I’ll trade if necessary :p.</p>
<p>@ Theundertaken, I am willing to trade: check your pm’s.</p>
<p>@thundertaken
correct
I’m gonna guess D??</p>