Cells and Organelles
This structure controls what enters and leaves the cell.
Cell membrane
Hypothesis
What is an educated guess?
A person eats a sandwich. Which two systems work together to break down and transport nutrients?
digestive system and circulatory system?
A student notices plants near a window grow faster than plants in a dark corner. What should the student do first?
Question
What does CER stand for?
Claim, Evidence, Reasoning
The smallest unit that can be considered alive.
Cell
An organism made of only one cell is called this.
unicellular
Which example is an organ?
heart, brain
Why should scientists repeat trials during an investigation?
To make the results more reliable and accurate
What is evidence?
Facts, data, or information that supports your claim
Plant cells have this green organelle that carries out photosynthesis.
Chloroplast
Put these in correct order from simplest to most complex: tissues, cells, organ systems, organs.
Cells → Tissues → Organs → Organ Systems
During a race, which two body systems interact to get more oxygen to muscles?
respiratory system and circulatory system
What is evidence?
Evidence is the data or observations that support a claim
Put these CER parts in the correct order:
A. Evidence → Reasoning → Claim
B. Reasoning → Claim → Evidence
C. Claim → Evidence → Reasoning
D. Evidence → Claim → Reasoning
Claim → Evidence → Reasoning
A cell is the BLANK unit of life
What is smallest?
Which scientist is credited with first observing cells in cork?
Robert Hooke
Which level of organization comes directly before organs?
tissues
This is the first step of the scientific method, where you identify something you want to investigate.
question
In CER, this part should directly answer the original question.
The claim
Which organelle stores the cell's genetic material and directs activities?
The nucleus
What structure controls what enters and leaves a cell?
cell membrane
This organ system breaks down food and absorbs nutrients.
Digestive system
This is the step where you conduct a test to collect information.
Experiment
True or false: Reasoning is simply repeating your evidence.
False