Lab Safety
What should you always do before beginning a science experiment?
Read the directions carefully.
This is the first step of the scientific method.
What is ask a question or make an observation?
This type of cell does not have a nucleus.
What is a prokaryotic cell?
Which organelle produces most of the ATP used by a eukaryotic cell?
What is Mitochondria
Why should scientists repeat experiments multiple times?
To improve the reliability of their results.
Why should long hair be tied back during a lab?
To prevent it from catching fire or coming into contact with chemicals.
What is a hypothesis?
This is a possible answer to your question that you can test. (educated guess)
Organisms made of only one cell are called this.
What are unicellular organisms?
Which organelle contains DNA and helps control many activities of a eukaryotic cell?
Nucleus
What is the only mammal capable of true sustained flight?
Bat
What should you do if you notice a piece of lab equipment is damaged?
Stop using it and notify the teacher.
The part of an experiment that stays the same so it can be compared to the variable.
What is the control?
Put these levels of organization in order from smallest to largest: tissue, organelle, organ system, organism, cell, organ.
Organelle → Cell → Tissue → Organ → Organ System→ Organism
Which two structures
1. provides support and protection
and
2.make sunlight into storable sugar
in plant cells but not animal cells.
Cell wall and chloroplasts
What is the difference between a qualitative and quantitative observation?
Qualitative describes qualities/characteristics; quantitative uses numbers or measurements.
Why should you never pour unused chemicals back into their original containers?
They could contaminate the remaining chemicals
What variable is measured or observed during an experiment?
Where would this go on a graph? x-axis or y-axis
Dependent variable
y-axis
Why do multicellular organisms need different types of specialized cells?
Different cells perform specific jobs that help the organism survive.
What is the difference between the rough ER and smooth ER?
Rough ER has ribosomes and helps make and process proteins.
Smooth ER makes lipids and helps detoxify substances.
What are the 4 styles of note taking taught to you this year?
1. Traditional
2. Doodle/sketch
3. Mind mapping
4. Cornell
A student accidentally gets a chemical in their eyes during an experiment. What should they immediately do?
Use the eyewash station to flush their eyes with water for at least 15 minutes and alert the teacher immediately.
What variable does a scientist intentionally change during an experiment?
Where would this go on a graph? x-axis or y-axis
Independent variable
x-axis
What are the three main ideas of cell theory?
1. All living things are made of cells
2. cells are the basic unit of life
3. all cells come from other cells.
A cell makes a protein that will be sent outside the cell. Name three structures involved in making, processing, and transporting that protein.
Ribosomes, rough ER, and Golgi apparatus (accept Nucleolus makes ribosomes)
If you could stretch out all the DNA in one human cell, approximately how long would it be?
About 2 meters (6 feet)