Unit 1 - Cells

What do you know? Complete the pre-assessment sheet

Observation, Inference, Prediction

Observation Any information collected with the senses. Quantitative – measureable or countable -3 meters long -4 marbles -50 kilograms -35 degrees Celsius Qualitative – describable, not measureable -red flowers -smells like fresh baked cookies -Tastes bitter

Inference Conclusions or deductions based on observations. The process of drawing a conclusion from given evidence. Practice: Observations: I hear people screaming I smell cotton candy, popcorn, and hamburgers I see a lot of people Inference = ?

Prediction Statement about what evidence suggests may occur in the FUTURE!.

Practice questions In the picture, which is an observation? a.The boat is on its side so it must have tipped over. b. It's not very windy. c. The bottom of the ship is a coppery color. d. I think the boat ran aground.

Practice questions Choose the best inference. a. The man is a diver who is collecting clams. b. The diver is a scientist who is measuring the length of the sample. c. The diver is weighing the sample. d. The diver is looking for sharks.

Good science relies on of good observations! Your inferences/predictions must be based on solid evidence!

Practice 1.When I rang the doorbell, no one answered. 2.The hamburger was hot. 3.Jamal was very popular. 4.The sun set at 7:18 PM. 5.That dog was mean. 6. Corn must be her favorite vegetable. 7. It is going to rain. 8. The beaker contains250 mL of water. 9. The bark on the birch is white. 10. Bubbles formed when I mixed the liquid with the solid.

Exit Slip 2-observations 1Quantitative 1 Qualitative 1-inference 1-prediction

Cell Theory and the Scientists Who Helped Shape It

What is a cell? The smallest unit that can perform all life processes.

Robert Hooke Contributions: - He observed pieces of cork from the bark of a cork tree under the microscope. - His observations led him to coin the word “cell.” - “Cell”- means little rooms in Latin

Anton van Leeuwenhoek Discoveries: : He looked at pond scum under the microscope and discovered small organisms he called animalcules or little animals (Protists) : discovered bacteria “Father of Microscopy”

Matthias Schleiden All plants were made of cells Theodor Schwann All animals are composed of cells and cell products"

Robert Virchow All living cells come only from other living cells.

1. All living things are made of cells. 2. Cells are the basic units of structure and function in living things. 3. Living cells come only from other living cells.

Theory = A set of statements that explain a group of facts or observations, especially one that has been repeatedly tested and can be used to make predictions about natural phenomena.

Micros copes

You MUST be able to identify and label the parts.

Vocabulary Magnification is the enlargement of an object. It is the ratio of images to its actual size. Resolution is how clear or sharp the image is. The ability of a microscope to show two very close points separately.

Magnification Eyepiece x Scanning Power Objective---4x Low Power Objective---10x High Power Objective---40x

Total Magnification Scanning Power x Low Power x High Power x

Care and Use Article

Performance Task – Microscope Lab