Unit 7 Mitosis/Meiosis TCAP Review

Multiple Choice

Which model of an atom correctly uses the rules?

Multiple Choice

Which medical problem can best be addressed by using chitosan?

• Bed sores are a type of tissue damage caused by patients remaining in one position for a long period of time.

• Marfan syndrome is a genetic disorder affecting connective tissues that are responsible for providing strength and support.

Multiple Choice

Placing the dialysis tube in which sugar solution will make the tube expand the meat?

• sugar solution A

• sugar solution B

• sugar solution C

• sugar solution D

Multiple Choice

Which table lists the minerals in the granite that are compounds?

Cell Division

Why do cells divide?

► Cells divide for many reasons.

► For example, when you skin your knee,

cells divide to replace old, dead, or
damaged cells.

► Cells also divide so living things can grow.

When organisms grow, it isn't because
cells are getting larger. Organisms grow
because cells are dividing to produce
more and more cells.

► In human bodies, nearly two trillion cells

divide every day.

Multiple Choice

Cells _________ for many reasons.

• subtract
• multiply
• add
• divide

Multiple Choice

In the human body, nearly _____________ cells divide every day.

• 2 trillion

• 10 million
• 50 trillion
• 25 billion

How do cells divide?

► Cells divide by a process called

mitosis.

► Mitosis is the stage of the cell cycle

during which the cell’s nucleus divides
into two new nuclei and one copy of DNA
is distributed into each daughter cell.

Multiple Choice

Cells divide by a process called __________.

• mitosis

• cell multiplication
• cell subtraction
• cell addition

Cell Cycle

I PMAT C

► Interphase

► Prophase

► Metaphase

► Anaphase

► Telophase

► Cytokinesis

Mitosis

Multiple Choice

Which will help you remember the 4 phases of mitosis?

• MATP

• PTAM

• PMAT

Multiple Choice

Before PMAT comes .....

• metaphase
• telophase
• interphase
• anaphase

Multiple Choice

After PMAT comes.....

• cytokinesis

• interphase

• prophase

• metaphase

Interphase

► Cell Prepares to Divide

► The cell grows to its

mature size, makes a copy
of its DNA, and prepares
to divide into two cells.

► Two cylindrical structures

called centrioles are also
copied.

Multiple Choice

In interphase, the cells __________ to divide.

• prepare
• multiply
• stop
• shrink

Prophase – Mitosis Begins

►

Chromosomes and Spindle
Fibers Appear

►

Chromatin in the nucleus
condenses to form
chromosomes.

►

The pairs of centrioles move to
opposite sides of the nucleus.

►

Spindle fibers form a bridge
between the ends of the cell.

►

The nuclear envelope breaks
down.

Multiple Choice

Prophase is when ______ begins.

• cytokinesis occurs
• mitosis

• nuclear envelope disappears
• cell division starts

Multiple Choice

During prophase, the nuclear envelope starts to ....

• shrink and expand
• break down and disappear
• solidify and strengthen
• multiply and divide

Metaphase – Mitosis continues

► Chromosomes Line Along

Equator

► The chromosomes line up

across the center of the
cell.

► Each chromosome

attaches to a spindle fiber
at its centromere.

Multiple Choice

During metaphase, the chromosomes start to line up down the _________.

• outside of the cell
• center of the cell
• bottom of the cell
• top of the cell

Anaphase – Mitosis Continues

►

Chromosomes Split and Move
to Opposite Ends

►

The centromeres split and the
two chromatids separate.

►

One chromatid is drawn by its
spindle fiber to one end of the
cell while the other chromatid
moves to the opposite end.

►

The cell stretches out as the
opposite ends are pushed
apart.

Multiple Choice

During anaphase, chromosomes _____ and move to opposite ends.

• split

• replicate
• disappear
• combine

Telophase – Mitosis ends

► Cytoplasm Begins to

Divide

► The chromosomes begin to

stretch out and lose their
rodlike appearance.

► A new nuclear envelope

forms around each region
of chromosomes.

Multiple Choice

During telophase, ______ begins to divide.

• cytoplasm
• ribosomes
• mitochondria
• nucleus

Cytokinesis

► Cytoplasm Divides

► The cell membrane

pinches in around the
middle of the cell.

► The cell splits in two.

► Each daughter cell ends

up with an identical set of
chromosomes and about
half the organelles.

Multiple Choice

During cytokinesis, the cell ______ in _____.

• divides in two
• shrinks in size
• combines in one
• multiplies in three

Multiple Choice

Mitosis creates ___ daughter cells.

• five
• four
• three
• two

Multiple Choice

Once mitosis is complete and there are 2 daughter cells, the cells are genetically .......

• similar
• related
• identical
• different