Math
Are these equivalent fractions?
1/3 and 4/6
No.
Let’s reduce the fraction with the bigger denominator (the number on the bottom of the fraction line!) in order to see if they are equivalent (means equal!). We want to change 6 and make it 3, so we should divide the entire fraction. 6 divided by 2 = 3. We should divide 4 by the same number, so 4 divided by 2 = 3. Our new fraction is ⅔. Is this equal to ⅓? No.
Are these equivalent fractions?
1/5 and 3/15
Yes.
Make 3/15 smaller. Divide 3 by 3 (equals 1). Divide 15 by 3 (equals 5). So, now we have 1/5. Is 1/5 = 1/5? Yes.
What is the smallest unit of life that makes up all living organisms and all living things?
Cell
How many points of Modern Cell Theory are there?
6 points:
Main Point 1: All living things are made of cells. They may be made of one cell, which is unicellular, or it may be made of many cells, which is multicellular.
Main Point 2: The cell is the most basic unit of life.
Main Point 3: All cells come from other cells that were already there.
Main Point 4: Genes are passed down to cells. This means the DNA of the original cell gives a copy of itself to the new cell.
Main Point 5: All cells are made of the same type of chemicals.
Main Point 6: All cell functions occur inside of the cell.
Solve. 5 1/2 - 4 1/4 = ?
1 1/4
Solve. 10 2/3 - 4 1/2 = ?
6 1/6
What are the two main types of cells?
Eukaryotic and prokaryotic
Do prokaryotes have a nucleus or membrane-bound organelles?
No.
1/3 x 4/3 = ?
4/9
1/2 x 2/4 = ?
1/4 (Remember to simplify 2/8)
Are plants, animals, and you prokaryotes or eukaryotes?
Eukaryotes
What is the “big boss” of the cell, and what does it do?
Nucleus, holds DNA/controls what cell does
4/5 ÷ 3/2 = ?
8/15
10/20 ÷ 11/3 = ?
3/22
Remember to simplify 10/20 to 1/2 before solving so that it is easier to multiply.
What does “selective permeability” mean when describing a cell membrane?
Only certain things are allowed in and out.
What living thing uses chloroplasts, and what does the chloroplast do?
Plants, used in photosynthesis to make food
Which is bigger?
0.3 or 0.21
0.3
Say this number.
0.34
Thirty-four hundredths
This is the jelly-like part of the cell that holds all the organelles. What is this?
Cytoplasm
This is known as the powerhouse of the cell. It makes energy for the cell to use. What is it?
Mitochondria