1) When an organism reproduces asexually, it usually has a) only one parent, and half as much DNA as the parent b) only one parent, and the same chromosome number as the parent c) two parents, and twice as much DNA as either parent d) two parents, and the same chromosome number as each parent 2) Which process allows a mammal to continue to grow in size? a) mitosis of sex cells b) mitosis of body cells c) meiosis of sex cells d) meiosis of body cells 3) What is the significance of anaphase in mitosis? a) Anaphase usually ensures that each daughter cell has the same number of chromosomes as the parent cell. b) In anaphase, the cell splits in half c) Anaphase usually ensures that each daughter cell has twice as many chromosomes as the parent cell. d) In anaphase, the DNA is being replicated. e) In anaphase, the DNA is copied 4) Which of the following best describes the purpose of mitosis? a) a gamete reproducing sexually b) a white blood cell engulfing bacteria c) a zygote being produced in an ovary d) an animal repairing damaged tissue e) an ovary producing sperm 5) If a chemical that interrupts cell division is added to a culture of human liver tissue, which process would stop? a) mitosis b) meiosis c) breakdown of glucose d) diffusion of nutrients 6) Which two processes are involved in mitotic cell division? a) nuclear duplication and cytoplasmic division b) nuclear duplication and cytoplasmic duplication c) spermatogenesis and cytoplasmic duplication d) oogenesis and cytoplasmic division 7) What would most likely result if mitosis was not accompanied by cytoplasmic division? a) two cells, each with one nucleus b) two cells, each without a nucleus c) one cell with two identical nuclei d) one cell without a nucleus 8) The process of mitotic cell division normally results in the production of a) four cells with half the number of chromosomes as the parent cell b) two cells with the same number of chromosomes as the parent cell c) two cells with only one chromosome from each set of homologous chromosomes d) one cell with a replicated set of homologous chromosomes 9) The chromatids of a double-stranded chromosome are held together at a region known as the a) polar body b) centriole c) Golgi complex d) centromere 10) Which statement correctly describes mitotic cell division? a) The chromosome number in the daughter cells is reduced by half b) Two cellular divisions result in the production of four monoploid cells. c) The fusion of nuclei restores the diploid number d) Chromosomes are replicated and two identical daughter nuclei are formed.

Mitosis (M7, L2)

由
嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?