Quiz: Active Transport, Chromosomes, Cell Cycle

What part of the chromosome is attached to spindle fibers during metaphase of mitosis?

• Centromere

• Centrosome

• Kinetochore

• Telomere

Which condition is NOT required for molecular transport to occur in cells?

• down the concentration gradient

• kinetic energy and ATP

• carrier proteins

• cell membrane

Which is TRUE about bulk transport?

• It is a type of passive transport.

• Substances move from high concentration to low concentration.

• The cell membrane engulfs or expel large amounts of substances.

• Carrier proteins are needed for it to occur.

There are 3 copies of chromosome 21. Identify the type of chromosome and the condition of the individual.

• Autosome; Turner Syndrome

• Allosome; Down Syndrome

• Autosome; Down Syndrome

• Allosome; Turner Syndrome

What does NOT happen during prophase of mitosis?

• The nuclear envelope disintegrates.

• Chromatin condenses to form chromosomes.

• The chromosomes align at the middle of the cell.

• The spindle fibers form.

The bacteria, E. coli, are engulfed by the white blood cells of the body to destroy them. What transport mechanism is involved here?

• Endocytosis

• Exocytosis

• Molecular Transport

• Osmosis

What occurs during Anaphase I?

• Chromatids are pulled apart by spindle fibers.

• Homologous chromosomes are pulled apart by spindle fibers.

• Chromatin are pulled apart by spindle fibers.

• Centromeres are pulled apart by spindle fibers.

Scenario: An onion root tip cell observed under the microscope has two daughter cells and cell plates formed into cell wall in between the daughter nuclei.

Identify the cell's phase in the mitotic (M) - phase.

• Anaphase

• Cytokinesis

• Metaphase

• Telophase

Homologous chromosomes undergo synapsis and crossing over during prophase II.

• True

• False

The karyotype of an individual with Klienfelter syndrome is 47, XXY.

• True

• False