Unit 4 Biology: Mitosis & Meiosis (ch. 10 & 11.4)

The spread of cancer is called

• malignant
• benign
• carcinogenesis
• metastasis

Before a cell can divide, what must happen?

• Nothing, it is always ready to divide
• The number of chromosomes must be cut in half
• The number of chromosomes must double
• The number of chromosomes must triple.

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NGSS.HS-LS1-4

What type of cells may never undergo mitosis and make new cells?

• blood cells
• skin cells
• nerve cells
• stomach cells

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NGSS.HS-LS1-4

If the message never gets through for a cell to stop dividing and it just keeps dividing over and over again, what can form?

• tumor
• freckle
• goosebump
• scab

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NGSS.HS-LS1-4

Why don't cells just stretch when you grow, instead of making copies of themselves?

• The muscles in the cells can't stretch that far.
• The cell won't be able to bring in food fast enough or get waste out fast enough.
• The cell membrane doesn't like the feeling of stretching.
• The lysosomes don't want to work so hard.

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NGSS.HS-LS1-4

In which type of cells will mitosis occur?

• egg cells
• sperm cells
• jail cells
• Somatic cells

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NGSS.HS-LS1-4

What is the name of the process in which DNA (genetic information) is exchanged during meiosis?

• crossing under
• crossing over
• melding
• blending

In meiosis, the if the diploid number is 2n=46, the haploid number of chromosomes in a cell is:

• 46
• 92
• 22
• 23

If the haploid number is n=40, then the diploid number would be

• 20
• 80
• 4
• 10

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NGSS.HS-LS3-2

Where can stem cells be found? 

• embryos
• umbilical cord blood
• adult tissues
• all of these