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Question: A student encounters an animal embryo at the eight-cell stage. The four smaller cells that comprise one hemisphere of the embryo seem to be rotated 45 degrees and to lie in the grooves between larger, underlying cells (i.e., spiral cleavage).
If we were to separate these eight cells and attempt to culture them individually, then what is most likely to happen?
a. All eight cells will die immediately.
b. Each cell may develop into a full-sized, normal embryo.
c. Each cell may develop into a smaller-than-average, but otherwise normal, embryo.
d. Each cell may continue development, but only into a nonviable embryo that lacks many parts.
During swimming there is a large increase in end diastolic volume (EDV) of the heart. This leads to an increase in stroke volume. Explain how the increased EDV leads to the increased SV.
A 5.0 mL aliquot of a stock tryptophan solution was diluted by adding 95 mL of water. The absorbance of that diluted solution was measured at 280 nm as 0.055 absorbance units.
A analyzer measured BMI in 12 patients who are free of diabetes and participating in a study of risk factors for obesity and found a mean BMI of 31.7 with a standard deviation of 5.9.
The value of neutrons and protons a molecule have determine a molecules "Molecular Weight". An important part of working a laboratory involves making molar solutions.
how The sex of a human is determined
As an analyzer, you are studying the changes in structure of plains dwelling, bovine-like mammals based on fossil skeletons found in sedimentary rocks.
Assume you isolate a mutant e.coli strain that is unable to grow without tryptophan supplementation at 37 degrees C but grows normally at 25 degrees C.
Determine what can be a reasonable explaination that some animals were found to have high levels of antibodies, but no such viral nucleic acids could be detected?
Describe the structure and function of receptors involved in taste and olfaction. Describe how and why each of the following situations would affect someone's perception of flavor.
Nucleoplasmin is a nuclear protein. Protein was divided into two segments and linked to the same large cytoplasmic protein, generating two fusion proteins
What are the two exceptions to the general rule that all cells in the human body contain a complete, identical copy, of a person's DNA?
Huntington disease is a rare dominant train auses neurodegeneration later in life. A man in his 30, who already has 3 children discoers his mother has huntingtons disease.
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