Most sponges I see are some what symmertrical, but not completely. I would say that it is Translational surgery, and the soak up holes repeat them selves.
Answer:
The correct answer is option B.
Explanation:
On seeing the question, it is clear that it is based upon the concept of semi-conservative theory for the replication of DNA. It is mentioned that when the bacteria were grown on N-15, the mass was 55 fg. Now, after two generations, the DNA would comprise N-14 and the mass of them will be 5.4 fg.
The average mass would be = 5.4 + 5.5 / 2 = 10.9 / 2 = 5.45 fg. The mass of the bacteria isolated from the culture would possibly contain both the masses. That is, the mass of DNA with N-14 only would be 5.4 fg, and the mass of DNA with both N-15 and N-14 would be the average, that is, 5.45 fg.
Answer;
Doctors recommend that women avoid most medications and alcohol during pregnancy because these substances may cross the placenta and harm the embryo or fetus.
Explanation;
The doctors recommend that women avoid most medications and alcohol during pregnancy.
Alcohol during pregnancy can cause fetal alcohol syndrome which is a serious condition that can affect a child throughout life.
Some drugs, substances or medications may be harmful during pregnancy, depending on the amount and frequency of use.
Answer:
Yes. Cells have 'cell receptors' that are used to receive messengers like hormones to communicate. Cell receptors have specific shapes that fit the shape of the messenger that they want to receive. Organs like the pancreas send our these messengers to the cells to order them to do different functions.
The answer is e. Myoglobin has a single
polypeptide chain so it has 10, 20, 30 and 40
structure.
Myoglobin is an iron and an oxygen binding
protein. It has a single polypeptide chain.
Proteins with the single polypeptide chain
cannot have quaternary (40) structure. 40
structure of proteins includes an arrangement of
multiple folded polypeptide chains (subunits) in
a multi-subunit complex. Therefore myoglobin
cannot have 40 structure as the single chain
polypeptide. All other choices are correct.
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