Warm up 3/20/08

1
Warm up 3/20/08

• If an animal has 45 chromosomes in its
  sperm/eggs, how many chromosomes does it have in
  its other body cells?

2
Warm up 3/19/08

• What does homozygous recessive mean?

3
Warm up 3/18/08

• What is the end product of Meiosis in female
  animals?
• See page 278

4
Warm up 3/17/08

• What is the end product of Meiosis in male
  animals?
• See page 278

5
Warm up 3/14/08

• Which cells in the human body use Meiosis to
  divide instead of Mitosis?
• See page 278

6
Warm up 3/13/08

• NO warm up today.
• Mr. Shown is at the middle school science fair as
  a judge.

7
Warm up 3/12/08

• Not all genes show simple dominance like Mendel
  observed. Some show more complex patterns.
• Describe the Incomplete Dominance pattern
  of inheritance.
• (see page 272)

8
Warm up 3/12/08

• Incomplete Dominance

Some flowers for example can display incomplete
dominance with flower color.
9
Human example Sickle Cell Anemia

• Incomplete Dominance

10

• Incomplete Dominance

Human example
Sickle Cell Anemia Heterozygous has immunity
from malaria
Sickle Cell
11
Warm up 3/11/08

• Not all genes show simple dominance like Mendel
  observed. Some show more complex patterns.
• Describe the CODOMINANCE pattern of
  inheritance.
• (see page 272)

12
Warm up 3/11/08

• CODOMINANCE

Cows and horses Spotted skin/ hair
13
Warm up 3/11/08

• CODOMINANCE

Speckled Feathers
14
Warm up 3/11/08

• CODOMINANCE

15
(No Transcript)
16
Warm up 3/10/08

• Genetics practice problem
• FatherRr
• Momrr
• What is the genotype ratio for each possible
  genotype?

17
Warm up 3/7/08

• What is the definition of a recessive trait?
• A A trait that only is expressed if the dominant
  allele is not passed down.

18
Warm up 3/6/08

• How many chromosomes are in a human body cell?
  (muscle, bone, skin, brain, etc.)
• A 46

19
Warm up 3/5/08

• How many chromosomes are in a human sex cell
  (sperm/egg)?
• A 23

20
Warm up 3/4/08

• -What causes a stem cell to turn
  into a specialized cell?

21
Video Reflection 3/3/08

• -Some of the twins in the video grew up in
  separate families and yet have the same
  likes/dislikes and similar behaviors.
• -What might this tell you about heredity?

22
Warm up 3/3/08

• Why arent children exact clones of their
  parents? (use chromosomes
  in your answer)

23
Warm up 2/29/08

• What happens during the
• S part of interphase?

24
Warm up 2/28/08

• What do you do to prepare for a quiz/test?

25
Warm up 2/27/08

• What is the name for offspring of crosses between
  two different forms of a trait?
• A hybrid or heterozygous

26
Warm up 2/26/08

• Why did Mendel choose pea plants? (2 reasons)

27
Warm up 2/25/08

• Who is the monk from the 1800s who is famous in
  the science world for his genetic experiments
  with pea plants?

28
Warm up 2/22/08

• What is the definition of a gene?

29
Warm up 2/21/08

• What does inheritance mean?

30
Warm up 2/20/08

• No warm up today!
• Please do not move the chairs. They are in
  QUIZ FORMATION.

31
Warm up 2/19/08

• What happens during the G1 phase of the cell
  cycle?
• (see page 245)
• Answer
• -increase in size
• -extra proteins are made
• -extra organelles are made

32
Warm up 2/14/08

• What is wrong with cancer cells?
• (see notes)

33
Warm up 2/13/08

• When is the next quiz?
• What is the topic? (see the board)
• Answer WED Feb 20th
• Topic Cell cycle, Mitosis, Cancer

34
Warm up 2/12/08

• What happens during telophase?
• See page 245-246
• )

35
Warm up 2/11/08

• What happens during interphase?
• See page 245
• Answer Cell growth, DNA replication, and
  preparation for mitosis (needed organelles)

36
Warm up 2/8/08

• If the parent cell has 46 chromosomes how many
  chromosomes do each of the daughter cells
  contain?

37
Warm up 2/7/08

• What happens during cytokinesis?
• See page 246

38
Article Essay
?Read the article Write 4 paragraphs ?Describe
how evolution takes place in the
bacteria. ?Describe how antibacterial soaps may
benefit society. ?Describe how antibacterial
soaps may harm society. ?Explain which choice you
will likely make when buying soap. Use some
evidence to back up your opinion.
39
Work record Unit 2 Cell
Division
Assignment Date assigned Date due into folder
Warm up questions 1/29/08 Each day
p.243 1-4 connecting concepts 1/30/08 2/1/08
p.249 1-6 writing in science 1/31/08 2/4/08
Cell Size labworksheet 2/5/08 2/5/08
Essay 1 Cell Size Limitations 2/5/08 2/6/08
Notes Binary Fission/ Mitosis comparison 2/5/08 2/5/08
Mitosis Notes Worksheet 2/6/08 2/6/08
Mitosis Flip Book 2/6/08 2/7/08
Article Antibacterial Soaps Essay 2/7/08 2/8/08
Mitosis Games (4 games) 2/8/08 2/12/08


40
Warm up 2/6/08

• In which phase of mitosis do the chromosomes line
  up at the center of the cell?
• See page 247

41
Warm up 2/5/08

• What is the name for the process by which
  prokaryotic cells divide?
• Answer binary fission

42
Essay 1 (Cell Division Unit)

• Cell Size Limitations
• Explain why cell size is limited.
• What would happen to the cell if it gets too big?
• Use the concepts of surface area and volume
• In your example calculate the surface area to
  volume ratio of a cube that 1cm x 1 cm x 1cm and
  one that is 10cm x 10cm x 10cm

43
Work record Unit 2 (through
2/5/08)
Assignment Date assigned Date due into folder
Warm up questions 1/29/08 Each day
p.243 1-4 connecting concepts 1/30/08 2/1/08
p.249 1-6 writing in science 1/31/08 2/4/08
Cell Size labworksheet 2/5/08 2/5/08
Essay 1 Cell Size Limitations 2/5/08 2/6/08
Notes Binary Fission/ Mitosis comparison 2/5/08 2/5/08






44
Cell Size Lab

• Step 1 Get a sample of agar
  (rhymes with logger) solution and 1 pair of
  goggles!
• Step 2 Cut the sample into different sized
  pieces
• 1cm x 2 cm x 2cm
• 1cm x 1cm x1cm
• 0.5 cm x 0.5cm x 0.5cm
• Step 3 Obtain dyed fluid from Mr. Shown.
• Step 4 Drop both pieces into the solution and
  let it sit for 10 minutes.
• Step 5 After 10 minutes, take each piece out
  and cut a cross section to inspect the amount of
  absorption.

• Cutting Cross section

45
Warm up 2/4/08

• What does the cell need to absorb from the
  outside environment?
• What does the cell need to expel to the outside
  environment?
• See page 241
• Answer
• Enter oxygen, water, food
• Exitwaste products

46
Warm up 2/1/08

• Why are cells so small?
• in other words.
• What keeps them from being giant???

47
Warm up 1/31/08

• What kind of microscope was necessary to see
  smaller organelles?

48
Warm up 1/30/08

• How is a prokaryotic cell different from a
  eukaryotic cell?
• Answer
• ?no nuclear membrane
• ?no membrane-bound organelles
• ?usually much smaller size

49
Warm up 1/29/08

• How is a single cell similar to the human body?

50
Warm up 1/24/08

• What does the cell membrane do for the cell?

51
Warm up 1/23/08

• Which two organelles are theorized to be
  descendants of ancient prokaryotic cells.
• See pages 179-180

52
Warm up 1/22/08

• What do mitochondria do for the cell?
• See page 179

53
Warm up 1/18/08

• What structures do plant cells have that animal
  cells do not?
• See page 175

54
Plant cells have chloroplasts and and a cell wall
55
Warm up 1/17/08

• What does the Golgi Apparatus do for
  the cell?
• See page 178

56
Warm up 1/16/08

• What does the endoplasmic reticulum (ER) do for
  the cell? See page 177

57
Warm up 1/15/08

• What do ribosomes do for the cell?
• See page 177

58
Warm up 1/14/08
Which organelle is this? What does it do for the
cell?