Cell Theory
Which part of of cell theory explains why a plant, a bird, an amoeba, a mushroom, and a human are all classified as living things.
All organisms are made of one or more cells.
Which organelle in a plant cell captures light energy to produce sugar through photosynthesis?
Chloroplast.
What term describes a cell's ability to maintain stable internal conditions despite changes in its external environment?
Homeostasis.
n an experiment testing how microwaved food vs. regular food affects rat maze completion time, what is the independent (test) variable?
How the food is prepared (microwaved vs. regular).
Which organelle acts as the "brain" or control center of both plant and animal cells by holding genetic material (DNA)?
A. Cytoplasm
B. Nucleus
C. Vacuole
D. Cell Wall
B. Nucleus
What is another tenet of cell theory: how are cells made?
All cells come from pre-existing cells.
What rigid outer structure is present in plant cells to provide support, but is completely absent in animal cells?
Cell wall.
If the temperature of a cell's environment increases by 5°C, what must the cell do to preserve homeostasis?
Work to regulate and regain its original internal temperature.
In a field study recording seal counts across various locations in Antarctica, what is the dependent (outcome) variable?
The count or percentage of seals recorded.
Which organelle is present in BOTH plant and animal cells to break down sugars and produce usable energy?
A. Mitochondria
B. Chloroplast
C. Cell Wall
D. Central Vacuole
A. Mitochondria
Clue: The cell theory applies to all living organisms. Which statement does not describe how organisms represent the cell theory?
A. Cells are the basic unit of all life
B. Cells are made of molecules.
C. They are made of one or more cells.
D. Their cells are completely identical.
B. Cells are made of molecules.
Why is it incorrect to claim that the cell membrane is the only source of support and structure in cells?
Plant cells also rely on the rigid cell wall for structural support.
What must happen to waste products like water and carbon dioxide produced during cellular respiration for a cell to maintain homeostasis?
They must be excreted (removed) from the cell.
When a single team of scientists conducts an entire experiment three separate times under identical conditions, what scientific practice are they performing?
A Repitition
B Replicsation
C a single experiment
D. Larping a scientist
Repetition.
How does the vacuole in a plant cell typically differ from the vacuoles found in an animal cell?
A. Plant cells do not have vacuoles at all.
B. Plant cells have many small vacuoles, while animal cells have one large one.
C. Plant cells have one large central vacuole, while animal cells have smaller ones.
D. Animal cell vacuoles are used exclusively for photosynthesis.
C. Plant cells have one large central vacuole, while animal cells have smaller ones.
What requirement must be met before additions or modifications can officially be made to modern cell theory?
Multiple scientists must independently confirm and document supporting evidence.
What two fundamental requirements must the cells of all living organisms (such as mushrooms) have to function and survive?
Water and a way to eliminate metabolic waste.
Which organelle is responsible for breaking down sugars to release usable cellular energy during cellular respiration?
Mitochondrion (Mitochondria).
When a different group of researchers conducts the exact same experiment previously run by another scientist to verify the results, what are they demonstrating?
A Repitition
B Replicsation
C a single experiment
D. Larping a scientist
Replication.
What flexible outer layer controls what enters and exits the cell in BOTH plant and animal cells?
A. Cell Wall
B. Cell Membrane
C. Nuclear Membrane
D. Cytoplasm
B. Cell Membrane
dding Domain Archaea after discovering unique single-celled organisms near deep-sea hydrothermal vents demonstrates what key feature of science?
A. Scientific knowledge changes and expands based on new discoveries and evidence.
B. Scientific theories are permanently fixed and can never be updated.
C. Experimental procedures do not require repetition or verification.
D. Hypotheses always match the final outcome of an experiment.
A. Scientific knowledge changes and expands based on new discoveries and evidence.
What type of scientific evidence best supported the discovery that hedylids (butterfly-moths) are actually true butterflies?
DNA testing showing close genetic relationships.
Which large organelle in a plant cell stores water and helps maintain internal fluid pressure?
Central vacuole.
to conclude whether toxic contamination caused a decrease in a pond's population, what critical baseline data did the researcher need?
Population data from the pond before it was contaminated.
If you are observing an unknown cell under a microscope and spot green chloroplasts and a rigid outer border, how should you classify the cell?
A. It is an animal cell.
B. It is a plant cell.
C. It is a nerve cell.
D. It is a blood cell.
B. It is a plant cell