Biology 101, October, Chapter 11

Which of the following structures do NOT participate in the cell division of a sunflower cell? I. Contractile ring II. Cell plate III. Vesicle

1

____ reproduction is a form of reproduction from a single parent based on ____.

Asexual; mitosis

During animal cell division, actin filaments organize into the following structure:

Contractile ring

Segregation of ribosomes occurs during:

Cytokinesis

____ is the process in which the cytoplasmic content of the ____, including the two new nuclei, is divided into two new ____ cells.

Cytokinesis; cell; daughter

Which of the following statements about gametes are true? I. In sexual reproduction, each parent provides genetic material in the form of a gamete cell. II. Gametes are produced by mitosis. III. If a sexually reproducing organism is diploid, the gametes are haploid.

I and III

Which of the following events occur during prophase? I. Centrosome duplication II. Centrosome movement to the spindle poles III. Centrosome organization of the spindle apparatus

II and III

Which of the following statements about asexual reproduction is NOT true?

It is an outdated, seldom used form of reproduction.

Chromosomes are maximally condensed at this step.

Metaphase

During this step, the nuclear membrane breaks down.

Prometaphase

Organize these steps in the order in which they would occur during cell division.

Prophase, prometaphase, metaphase, anaphase, telophase, interphase

Which of the following characteristics or structures are unique to meiosis?

Reduction of chromosome number

____ reproduction is a form of reproduction in which offspring are produced from the union of ____ from two genetically different parents.

Sexual; gametes

Chromosome de-condensation occurs during this step.

Telophase

The new cell wall which forms between dividing plant cells during cytokinesis is known as:

The cell plate