READ AND LISTEN CAREFULLY to everything!! You should have two windows open at this time. One for the presentation and one for the questions on the form. Click the link below to get the form to open. https://spreadsheets.google.com/viewform?formkey=dE1XbExZTGNnX01NV0tEc0hBUE13eFE6MQ
Orange and yellow – tell you when to pause Or when do click on a link Do activity Or answer a question.
Mitosis - Meiosis Cell cycle has 7 parts IPMATC – interphase, prophase, metaphase, anaphase, telophase, cytokenisis. Interphase has three parts G1 – S phase – G2
Miotosis is also known as m-phase This chart is the cell cycle Remember the cell cycle has ipmatc The green purple and orange arrow represent g1, s-phase and g2.
G1 S-phase G2
S-phase means “synthesis” phase http://www.glogster.com/media/1/3/99/27/3992794.jpg
PAUSE – answer the following questions on the form. What happens during interphase? Label and write what happens during the three parts of interphase.
Mitosis – Meiosis cont. Which part is mitosis – PMAT - prophase, metaphase, anaphase, telophase This picture is metaphase PAUSE the video – go to the microscopes and count the cells in Metaphase Ask the station manager for help Come back and put answer on the form
Watch the animation by clicking here http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/animation__mitosis_and_cytokinesis.html After watching vid come back to the program
Osmosis Osmosis is diffusion across a membrane Diffusion is movement from high concentration to low concentration. PAUSE Using diffusion – go to “form 2” and answer the diffusion questions “expain why when someone puts on lotion you can smell it?” Low concentration High concentration
With osmosis, hypertonic means there are more solutes (solids) outside the membrane. Water goes where the solutes are. What happens to the cell when it is put in a hypertonic solution? PAUSE – go back and look at microscope A and microscope B. Both microscopes have a purple onion. Which onion is in HYPERTONIC SOLUTION? A or B? How do you know? Answer on form 2
Cellular respiration Bacteria on the head of a needle Looks like Twinkies Two types of cellular respiration One uses oxygen the other does not. PAUSE – What are the two types of cellular respiration and how many atp do they make? Answer on the form.
We know that humans and other animals use anaerobic res. and aerobic res in the same body. Some bacteria don’t like oxygen and some do. So if you have a low oxygen environment what organisms are going to survive? Bacteria!
PAUSE. Go to the form and answer the question, “what organisms can live in a low oxygen environment.” What organisms need an high oxygen environment.
Biodiversity 1 and invasive species The biggest reason different organisms die out (go extinct) is because of habitat destruction. Ex. Clear cutting Land development Building homes and businesses Farming When a habitat is destroyed the organisms die and biodiversity goes down.
Biodiversity 2 The European starling (left) is an invasive species. That means they are not from here They travel in huge groups and eat all the food. This cause birds from TN to starve and die.
PAUSE – go to the form and answer the question “If an invasive species of plants grows faster than the local plants what will happen?”
Cells and organelles PAUSE – go to this link and study the different organelles listed below. http://upper.usm.k12.wi.us/academics/faculty/rheun/organelle.html While at that site study the function of… Nucleus Mitochindria Golgi apparatus Rough ER Smooth ER Ribosomes Chloroplasts Cell membrane
Play the game below until you score a 90% or higher – must show Mr. Taylor your score https://docs.google.com/?tab=mo&authuser=0#all
GENETICS To the right is a pedigree of a family with color blindness. As you can see the females are carriers The males either have the defect or they don’t. That means the defect is “sex linked recessive”
GENETICS 2 Both the parents in the Punnett square on the right are carriers for the disease green ear. PAUSE – “do the parents have the disease?” “how do you know” Now let us say the G represents groovy hair. PAUSE “what does that tell you about square 2 and 3?” “what is the chance the offspring will not have groovy hair?” 11 21 31 41
The parents are heterozygous or Gg The sq 1 is homozygous dominant or GG Sq 2 and 3 are heterozygous or Gg or Carriers for non-groovy hair.
Cells use chloroplasts to absorb energy from the sun. PAUSE – what color do chloroplasts reflect? What colors do they absorb? What is the speed of light?