Characteristics of Life
The acronym we use to remember the characteristics of life
What is MRS GREN
What is the scientific method used for?
Used to find out new info, answer a (scientific) questions, create and test a hypothesis, etc.
What is the difference between eukaryotes and prokaryotes?
Eukaryotes: Nucleus, membrane-bound organelles
Prokaryotes: No nucleus, no membrane-bound organelles
What 3 things do eukaryotes and prokaryotes have in common?
Cell membrane
Ribosomes
Cytoplasm
How often do you have homework
Everyday
What is the difference between Respiration and Nutrition?
Respiration = The breakdown of food
Nutrition = Taking in food
What is the difference between qualitative vs quantitative data?
- Qualitative data describes qualities or characteristics using words (e.g. categories, opinions)
- Quantitative data measures quantities using numbers
What part of the cell is known as the brain or control center
Nucleus
What is the acronym we use to remember the main statements of the cell theory?
BOP
You missed class on Tuesday, so your late work is due on
Thursday
A vulture is eating the carcass (body) of a dead deer. Is the vulture biotic or abiotic? How about the deer?
Both are biotic!
If more ice cubes are added to a drink, then the drink's temperature will decrease.
What is the independent variable? Dependent?
Independent: Number of ice cubes added
Dependent: Drink temperature
What is a main difference(s) between a cell membrane and cell wall?
Cell Membrane: Found in all cells, controls what goes in and out of the cell, and is flexible (AKA. security)
Cell Wall: Not found in animal cells, provides structure and support, stiff/rigid (AKA. rigid walls)
Give me an analogy for at least 2 cell organelles
Nucleus, Cytoplasm, Ribosomes, ER, Mitochondria, Cell wall, Cell membrane, Golgi apparatus, Vacuoles
End of the day that same day
What characteristic of life do plants have that helps in the production of oxygen?
Respiration
What is the acronym we use to remember the scientific method, and what do you do at each step?
MACTA
Make observations
Ask questions
Construct predictions (hypothesis)
Test the hypothesis
Analyze the results + make conclusions
What does the endoplasmic reticulum do?
Smooth: Produces fats
Rough: Produces proteins
Where do new cells come from?
Pre-existing cells
0- silent
1-whisper
2-table
3-Presentation
What is the difference between something that is dead vs nonliving?
Dead = once was alive
Nonliving = was never alive
Write a hypothesis in the if-then because format and circle your independent and underline your dependent variables
A student wants to test how the amount of water a plant gets affects how tall it grows over two weeks.
If a plant is given more water, then it will grow taller because water is needed for the plant to conduct photosynthesis.
Independent Variable: amount of water
Dependent Variable: plant height
What are the main differences between a plant and animal cell
Plant cells have three extra structures that animal cells don't:
- Cell wall
- Chloroplasts
- Large central vacuole
State the 3 main parts of the cell theory
All living things are made of cells
Cells are the basic units of structure and organization in all forms of life.
Cells come from previously existing cells.
T/F: I can ask my teacher for help on the homework at any time of the night
False, the cut off is 8pm