Scientific Method
What is the purpose of the scientific method?
A systematic way to answer a question.
What is the control center of the cell?
The nucleus
What is the difference between active and passive transport?
Active transport uses energy; passive does not.
What phase lines up chromosomes in the middle?
Metaphase
What waste product is released during photosynthesis?
Oxygen.
What is the scientific method?
A systematic way scientists conduct experiments.
What organelle produces energy (ATP)?
The mitochondria
Which type of transport moves water across a membrane?
Osmosis
What phase pulls chromatids apart?
Anaphase
What are the raw materials of photosynthesis?
Water and Carbon Dioxide
Name one step of the scientific method?
Hypothesis, observation, experiment, conclusion.
What is the gel-like substance that holds organelles in place?
The cytoplasm.
Give an example of passive transport
Diffusion, osmosis, facilitated diffusion
Ture or False: Mitosis divides the nucleus of a cell.
True
What molecule stores usable energy for cells?
ATP
Why do scientists repeat experiments?
To ensure the accuracy and reliability of results.
What gives plant cells structure and support?
The cell wall.
Which organelle helps transport materials within the cell?
Endoplasmic Reticulum
What process creates gametes for reproduction?
Meiosis.
What are the products of cellular respiration.
Carbon dioxide, water, and ATP
What variable is deliberately changed in an experiment?
The independent variable.
What is the selectively permeable barrier surrounding the cell?
The cell membrane.
Why is the cell membrane called selectively permeable?
It allows some substances to pass while blocking others.
Why is meiosis important for diversity?
It causes genetic variation through crossing over and independent assortment.
In what organelle does photosynthesis occur?
Chloroplasts.