Bio I Unit 3 Review

Which animal cell organelle helps to control movement of DNA during cell division?

• Centriole

• Centromere

• Nucleus

• Chromosome

Which of the following describes what a centromere is?

• one side of a chromosome; a chromatid

• the structure at the center of a chromosome; holds chromatids together

• a reproductive cell; such as sperm or egg

• the organelle in animal cells that helps control cell division

Which of the following terms describes DNA in its relaxed form; such as what you would see during Interphase?

• Centromere

• Chromatid

• Chromosome

• Chromatin

During mitosis, what separates during anaphase?

• Chromosomes

• Chromatin

• Chromatids

• Homologous chromosomes

Egg cells and sperm cells are examples of which type of cell?

• Gametic cells (gametes)

• Somatic cells

How many chromosomes are in a human gamete? (egg or sperm)

• 23

• 46

• 8

• 16

How many chromosomes are in a human somatic cell? (skin cell, liver cell, or brain cell)

• 23

• 46

• 8

• 16

If a cell that has 10 chromosomes goes through mitosis, 2 new daughter cells will be produced. How many chromosomes will be in each new daughter cell?

• 5

• 10

• 20

• half

Which of the following describes a mutation?

• tumor cells that do NOT spread to neighboring tissues

• a substance that is known for causing cancer

• cells that invade neighboring tissues

• a change in a segment of DNA that controls protein synthesis

Which of the following describes a carcinogen?

• tumor cells that do NOT spread to neighboring tissues

• a substance that is known for causing cancer

• cells that invade neighboring tissues

• a change in a segment of DNA that controls protein synthesis