Bio Exam 2.docx - A large family has a history of multiple...

This preview shows page 1 - 5 out of 26 pages.

A large family has a history of multiple aneuploid diseases such as Down Syndrome, trisomy-18 and Klinefelter Syndrome (XXY). The propensity to defects seems to be inherited, but the gene responsible is unknown.What types of candidate genes would be most likely to lead to aneuploidy if they were mutated?A. Genes that are part of the G1 checkpoint of mitosis.B. Genes that encode proteins involved in chiasma formation.Feedback: Since chiasmata help chromosomes to segregate, a problem in their formation might lead to various kinds of aneuploidy.C. Histone genes.D. Genes that control DNA synthesis.
Feedback:CorrectQuestion 2 of 402.5/ 2.5 PointsIn vertebrate immune systems, some t-lymphocytes will make a growth factor that drives their own division. This represents
Feedback:CorrectQuestion 3 of 402.5/ 2.5 PointsTo efficiently provide the ideal amount of nitrogen fertilizer, some farmers make use of a “chlorophyll meter” that measures the amount of green light reflected off a leaf.Why does this provide an indication of whether the plant may need more or less nitrogen?
Feedback:CorrectQuestion 4 of 402.5/ 2.5 PointsWhat properties are expressed by wavelengths? Select all that apply.
Feedback:CorrectQuestion 5 of 402.5/ 2.5 PointsDepolarization of one group of smooth muscle cells rapidly spreads to other smooth muscle cells, leading to coordinated contractions. This electrical coupling is due toA. autocrine signalingB. paracrine signalingC. endocrine signalingD. direct signaling
Feedback:Learning Objective: Describe four types of signaling found in multicellular organisms

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture