Blog

A gravitational anomaly on Xyphos-9 appears to be disrupting dorsal-ventral polarity in embryos. How is the dorsal-ventral axis normally specified in amphibians? Describe the role of β-catenin in this process. Propose a potential way to artificially restore proper axis formation in the altered gravitational field.

Although personality is a psychological concept, it is closely tied to the physical body.

Autopsies of defective embryos reveal that the neural ectoderm fails to form, leading to embryos without central nervous systems. Explain the default model of ectodermal differentiation and how it is normally induced to become neural tissue. Which organizer-derived molecules might be missing, leading to this failure? If a synthetic signaling molecule had to be introduced to rescue neural induction, what would you propose?

Anxiety decreases academic performance in people high in conscientiousness. This finding is

Learning about human behavior by asking a person to look inward to their own experience is called

Your patient is receiving cisplatin, an intercalating agent, for cancer chemotherapy.  What type of mutation is an intercalating agent most likely to cause?

                    are also called “jumping genes”.  They can function as                       mutagens.

Draw the Lewis structure of  PF5 on your exam work paper, which you will submit under Exam 5 work Apply VSEPR theory and answer each of the following questions on the exam: a) Total number of valence electrons. [a] valence electrons b) Number of lone pairs on central atom. [b] lone pairs c) Molecular Geometry. [c] shape d) Polar or Nonpolar. [d] molecule

For the reaction of:  3H2(g) + N2(g) 

A 75.5 gram sample of an unknown metal at 95.0oC is placed in 125 gram of water at 25.0oC. If the final temperature of the metal and water is 33.0oC, what is the specific heat capacity of the metal?  (the specific heat of water is 4.184 J/goC). Show all your work for full credit. Use the correct number of significant figures.