Question 12 of 40 25 Points Which statement describes the relationship of

Question 12 of 40 25 points which statement describes

This preview shows page 7 - 12 out of 26 pages.

Question 12 of 40 2.5 Points Which 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 function Question 13 of 40 2.5 Points Chromosome duplication occurs for the beginning of which process? Select all that apply. A. mitosis B. meiosis I C. meiosis II D. interkinesis E. cytokinesis Feedback: Incorrect- Learning Objective Text: Explain the differences in meiosis and mitosis. Question 14 of 40 2.5 Points In vertebrate immune systems, some t-lymphocytes will make a growth factor that drives their own division. This represents
A. autocrine signaling B. paracrine signaling C. direct signaling D. endocrine signaling Feedback: Incorrect: Learning Objective Text: Describe four types of signaling found in multicellular organisms Question 15 of 40 2.5 Points Damaged DNA can potentially be repaired during which checkpoint. Select all that apply. A. G 1 B. S C. G 2 D. G 0 Feedback: Correct Question 16 of 40 2.5 Points What properties are expressed by wavelengths? Select all that apply. A. Visible light’s wavelengths are between 400-740nm
B. Red absorbs little energy C. Green is useful in absorbing light during photosynthesis D. Chlorophyll b absorbs a lot of energy from 460nm wavelengths E. Chlorophyll a reflects red light well Feedback: Correct Question 17 of 40 2.5 Points Depolarization 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 signaling B. paracrine signaling C. endocrine signaling D. direct signaling Feedback: Learning Objective: Describe four types of signaling found in multicellular organisms Question 18 of 40 2.5 Points A 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 40 2.5 Points Which event most accurately describes cytokinesis? A. Cell walls prevent cleavage furrow from deepening. B. Actin molecules are used to develop the cell plate.

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture