Answer each with a few sentences please:
1. Epiphyseal plate function and increase in length of a long bone
2. Osteoclast functions in bone ECM degradation
3. Cells in the osteogenic periosteum and what they do
4. Comparison of osteogenic and chondrogenic stem cells
In: Biology
What is vaccination? What is the role of vaccines in body? Give two examples when immediate response is needed by body to defend it, name this type of immunization.
In: Biology
(answer with a paragraph or a few sentences for each)
1. The structure of cartilage (in general), how types of cartilage differ from one another, and the importance of the perichondrium associated with cartilage
2. The activity of osteoblasts, balancing osteoclast activity with osteoblast activity, and ways through which various signal molecules control osteoclast activity
3. Comparison of cartilage and bone (particularly a long bone) with respect to the blood supply that supports cells of the tissue
In: Biology
Which of the following is correct order of the evolutionary history of man?
(a) Peking man homo sapiens, Neanderthal man, Cromagnon man
(b) Peking man, Heidelberg man. Neanderthal man, Cromagnon man
(c) Peking man, Heidelberg man. Neanderthal man, Cromagnon man
(d) Peking man, Neanderthal man. Homo sapiens, Heidelberg man.
In: Biology
Compare and contrast the following macromolecules in terms of their structure, function, synthesis and significance to the cell:
1. proteins
2. carbohydrates
3. lipids
4. aromatic bases
Which of the above could the cell survive longest without? Why?
In: Biology
Were Lamarck's ideas scientific?
How so? How might you test his hypothesis for evolution?
In: Biology
Theory of inheritance of acquired characters was given by
(a) Wallace
(b) Lamarck
(c) Darwin
(d) De Vries.
In: Biology
Biochemistry question:
Describe the four levels of proteins structure (primary, secondary, tertiary and quaternary). Make sure to describe the role of non-covalent interactions involving the main chain or side chains of the amino acids that form to stabilize the structure.
In: Biology
How are the processes of mitosis and meiosis different? When are each occurring? What is the final product of each? How does each process contribute to genetic variation that makes each human a unique individual?
In: Biology
Under the interplay of epigenetic regulators:
1.In your own words, what is Dnmt1 and what does it do?
2.In your own words, what is Dnmt3a and 3b, and what do they do?
3.Identify two distinct ways that DNA methylation regulates gene expression. One way is related to histone modifications, the other way is not.
Under Regulating X Inactivation
4.Describe how DNA-methylation and histone modifications play a role in X-chromosome inactivation.
In: Biology
How did the experiments of Redi and Pasteur refute the spontaneous generation hypothesis?
In: Biology
Why are recombinant DNA technology and nucleus transplantation technology still dangerous?
In: Biology
What are some diseases or genetic abnormalities caused by dominant genes? Why are severe dominant genetic diseases rarer than recessive ones?
In: Biology
How are mutagenic agents related to the incidence of cancer in a population? Is cancer a disease transmitted to the offspring of an individual?
In: Biology
What type of genetic inheritance determines the ABO blood group system? What are the relations of dominance among the involved alleles?
In: Biology