7th Grade: Cells quizlet for Fridays test

Today you began an experiment with eggs and different solutions that demonstrate Osmosis/diffusion.

You added vinegar to the egg to see if it affects the egg’s circumference.

Tomorrow you will measure the circumference and replace the vinegar with corn syrup to see if it has an effect on the egg’s circumferenc

 

Friday you will take the post test for Cells. Below is a link for a quizlet to help you prepare.

 

Cells quizlet

Those are the Phases of the Moon

REVIEW YOUR MOON PHASES

http://www.inconstantmoon.com/cyc_phas.htm

You can check out the current moon phase by visiting the link below…

https://www.moongiant.com/phase/today/

Eclipses only occur during the new and full moon phases, but we don’t have them every month because the Moons orbit is tilted 5 degrees. Eclipses are all about the shadow:

The Earth’s shadow on the Moon = LUNAR ECLIPSE

The Moon’s shadow on the Earth = SOLAR ECLIPSE

Want to know when the next eclipse is coming to the Milky Way?

https://www.nasa.gov/eclipse

LIFE SCIENCE: Vocabulary Week 5

New vocabulary words for week #5 are:

  1. Autotroph: plants that get their energy from the SUN and make their own energy (photosynthesis)
  2. Heterotrophs: Animals that get their energy from EATING OTHER PLANTS and ANIMAL

3. Carbohydrates: are substances, found in certain kinds of food, that provide you with energy. Foods such as sugar and bread that contain these substances can also be referred to as CARBOHYDRATES

Carbohydrates (carbs) contain Carbon, Hydrogen and Oxygen ( our bodies break down most carbohydrates into GLUCOSE)

4. SOLVENT: a substance that dissolves other substances ( Water is the universal solvent)

5. SOLUTE: a substance that is DISSOLVED

When you pour salt into water, the water DISSOLVES the salt- Water is the solvent; Salt is the solute

7th Grade Cells quiz thursday

Thursday you will be tested on the parts of a cell and their function.

Organelles you need to know :

Nucleus- brain of the cell

Cell Membrane- allows materials to pass in and out of the cell

Mitochondria- converts glucose to ATP energy (powerhouse of the cell)

Vacuole- stores food and water

Ribosomes- makes protein

Lysosome- digests waste (stomach of the cell)

E.R. (endoplasmic reticulum) – passageway, transports proteins

Cytoplasm- gel or fluid that fills the cell (like water in a water balloon) gives the cell its shape

Golgi body- packages proteins sends the packages elsewhere in the cell or to the outside of the cell.

Eucaryote- animal and plant cells that have a membrane bound nucleus

Procaryote- cells that do not have a nucleus

Difference in plant and animal cells:

Plant cells have a cell wall; larger vacuole and chloroplasts

 

 

“Guts” or organs of a cell= Organelles

Remember your vocabulary quiz is Friday 8/24

Procaryote; Eukaryote; unicellular; multi-cellular; organ; organ system; organelle; tissue, cell ; organism

You will also have a warm-up check on Friday 8/24

* Warm-up questions should have the date, question number and answer* and be separated by a line

**Warm-ups 8/6- 8/22**

8/6 John wants to see if different color light impacts plant growth. He uses three colors of light with three plants and measures the height. Identify the independent and dependent variables color of light = I.V. plant height = D.V.

8/7 What is the first step of the scientific method? Identify the problem

8/8 John used different amounts of water when watering his plants and measured their height. What is the I.V. and D.V.? I.V.= amt water, D.V.= height

8/9 List two items you see these students doing improperly. No gloves, eating in lab

8/10 Are all cells the same size? NO

8/13 What is the smallest living object considered alive? Cells

8/15 How is a Eukaryote cell different than a Procaryotic cell? Eucaryotes have a nucleus, Procaryotes do not have a nucleus

8/17 Which organelle converts glucose to energy in the form of ATP? Mitochondria

8/20 List 6 items all living organisms must have.

Made of cells; require energy; grow and develop; contain DNA;respond to stimuli; reproduce

8/21 Increasing the amount of oxygen increased the number of eggs frogs layed. Identify the I.V. and D.V.

I.V. is the amount of oxygen; D.V. is the number of eggs layed

8/22 Organ systems are to organs as tissues are to ? Cells