Cell Component
What do we call a substance that is collected in a vacuole
Sap
What is a specialized cell?
A cell that has a specific job or function
Why is fire not a living thing, even though it grows and moves?
It doesn’t have cells or reproduce
What do viruses need to reproduce?
A host cell
What does the word “dichotomous” mean?
Divided into two choices
What gives the support and shape of a cell?
Cell wall
What is a Cell?
Basic Unit of life.
Why can’t different species usually reproduce together?
Their DNA is too different
Why are viruses considered non-living outside the host cell?
Because they can’t move, grow, or reproduce on their own
If two organisms end up in the same group in a key, what does that tell you?
They share many characteristics or are closely related
Name two differences between plant and animal cells.
Plant cells have chloroplasts and a cell wall; animal cells do not
Why do red blood cells not have a nucleus?
To carry more oxygen
Are all dogs the same species?
Yes
What is the protein coat of a virus called?
Capsid
What tool helps scientists identify organisms?
Dichotomous key
Does the Ciliated Cell have Mitochondria
yes
the nerve cell related to which systm?
Nervous system
How can scientists tell if two animals belong to the same species?
By checking if they can produce fertile offspring
What part of the virus protects its genetic material?
Protein coat (capsid)
What tool helps scientists identify organisms?
Dichotomous key
Structural component in plants, providing strength and rigidity to cell walls
Cellulose
Compare how the structures of a red blood cell a root hair cell help each do its function.
• Red blood cell: no nucleus, disc shape → carries oxygen easily
• Root hair cell: long and thin → large surface area to absorb water
What is a species?
A group of organisms that can reproduce fertile offspring
Name one disease caused by viruses.
Example: Influenza, COVID-19
A scientist uses a dichotomous key to identify unknown samples from the human body. The samples are made of similar cells working together to perform one function. Using the key, should the scientist classify the sample as a cell, tissue, organ, or system? Explain your reasoning.
The scientist should classify it as a tissue, because tissues are groups of similar cells working together to perform the same function — this fits the description in the key.