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Question 12 of 402.5 PointsWhich statement describes the relationship of cancer control genes?A. Proto-oncogenes and tumor suppressor genes increase cell division
B. Proto-oncogenes and tumor suppressor genes decrease cell division C. Proto-oncogenes increase cell division and tumor suppressor genes decrease cell division D. Proto-oncogenes decrease cell division and tumor suppressor genes increase cell division Feedback: Learning Objective: Describe how tumor suppressors functionQuestion 13 of 402.5 PointsChromosome duplication occurs for the beginning of which process? Select all that apply. A. mitosisB. meiosis IC. meiosis IID. interkinesisE. cytokinesisFeedback: Incorrect- Learning Objective Text: Explain the differences in meiosis and mitosis.Question 14 of 402.5 PointsIn vertebrate immune systems, some t-lymphocytes will make a growth factor that drives their own division. This represents
A. autocrine signalingB. paracrine signalingC. direct signalingD. endocrine signalingFeedback: Incorrect: Learning Objective Text: Describe four types of signaling found in multicellular organismsQuestion 15 of 402.5 PointsDamaged DNA can potentially be repaired during which checkpoint. Select all that apply.A. G1B. SC. G2D. G0Feedback: CorrectQuestion 16 of 402.5 PointsWhat properties are expressed by wavelengths? Select all that apply.A. Visible light’s wavelengths are between 400-740nm
B. Red absorbs little energyC. Green is useful in absorbing light during photosynthesisD. Chlorophyll b absorbs a lot of energy from 460nm wavelengthsE. Chlorophyll a reflects red light wellFeedback: CorrectQuestion 17 of 402.5 PointsDepolarization of one group of smooth muscle cells rapidly spreads to other smooth muscle cells, leading to coordinated contractions. This electrical coupling is due to A. autocrine signalingB. paracrine signalingC. endocrine signalingD. direct signalingFeedback: Learning Objective: Describe four types of signaling found in multicellular organismsQuestion 18 of 402.5 PointsA human fertilized egg contains one chromosome with HbS, the allele for sickle cell disease, and a homologous chromosome with Hbs, the wildtype allele. It also contains an X and Y
chromosome. At what point will meiosis occur to create cells that are either HbS or Hbs ?A. Within the hour, as fertilization proceeds.B. Within the week, as embryonic development proceeds.C. Years later, when gametogenesis proceeds.D. Decades later, in the grandchildren of this individual.Feedback: Correct Question 19 of 402.5 PointsWhich event most accurately describes cytokinesis?A. Cell walls prevent cleavage furrow from deepening. B. Actin molecules are used to develop the cell plate.