Lecture Exam #2

Somatic cell division differs from reproductive cell division in all of the following ways EXCEPT?

• somatic cell division involves any call of the body except germ cells

• Somatic cell division is termed mitosis while reproductive cell division is termed meiosis

• Somatic cell division produces identical cells with the same number and kind of chromosomes while reproductive cell division produces cell with half the number of chromosomes

• Somatic cell division only occurs in the ovaries and testes

Which of the following is mismatched?

• Prophase- Chromatin fibers condense into paired chromatids

• Metapahse- Centromeres of chromatid pairs line up at the metaphase plate

• Anaphase- Centromeres split and identical sets of chromatids move to opposite ends of the cell

• Telophase- Nuclear envelopes and nucleoli reappear

• Interphase- Mitotic spindle disappears

On the way to class, carl tripped and injured his arm. The next morning his arm was badly bruised and showed signs of inflammation. were the injured cells in his arm undergoing apoptosis necrosis?

• Apoptosis

• Necrosis

In the below image, look carefully at the structure labeled C. What happens to it during anaphase in somatic cell division?

• the entire structure goes into one of the new cells being formed

• the structure duplicates itself, and each new cell will get a complete "X" shaped structure

• the center region splits, and each identical new cell gets one half of the "X" shaped structures

• the center region splits, and both halves replicate, and two identical sections go into each new cell

• none of these are correct statements on what is happening

Sister chromatids of a pair of homologous chromosomes form tetrads, and crossing-over (exchange of genetic information between regions of non-sister chromatids in the tetrad) occurs during which phase?

• mitotic prophase

• meiotic prophase l

• mitotic metaphase

• meiotic metaphase l

• meiotic metaphase ll

cells are genetically programmed to die, responding to cell signals that can come from outside or inside the cell. this process is called necrosis and is a normal way to regulate cell numbers during fetal development and within tissues and organs after birth

• true

• false

DNA replication

• can also be called mitosis

• requires the use of mRNA, rRNA, and tRNA

• takes place during S interphase of the cell cycle

• reduces the number of chromosomes by half

Which of the following reduces the number of chromosomes by half?

• separation of chromatids

• separation of homologous chromosomes

• cytokinesis

• synapsis

What is nuclear division in a somatic cell called?

• Cytokinesis

• Meiosis

• Mitosis

• Prophase

• Telophase

During this phase of the cell division, organelles duplicate and centrosome replication begins

• Telophase

• Interphase

• Anaphase

• Prophase

• Metaphase