Scientific Method
What is the independent variable?
The variable that is changed or manipulated
What is the basic unit of life?
The cell
Which biomolecule provides quick energy?
Carbohydrates
Which process makes glucose?
Photosynthesis.
Which nitrogen base pairs with adenine in DNA?
Thymine
What is the dependent variable?
The variable that is measured or observed
Which organelle is known as the powerhouse of the cell?
The mitochondria
Which biomolecule stores long-term energy?
Lipids
Which process releases energy from glucose?
Cellular respiration.
Which nitrogen base pairs with cytosine?
Guanine
What type of date uses numbers and measurement?
Quantitative data
Which organelle contains chlorophyll?
The chloroplast
Which biomolecule is made of amino acids?
Proteins
What gas do plants take in during photosynthesis?
Carbon dioxide (CO₂).
What is the first step of protein synthesis?
Transcription
Which statement is a better hypothesis?
B
Name the 3 structure found in plant cells but not in animal cells.
Cell wall, chloroplast, and large central vacuole
Which biomolecule stores genetic informatio?
Nucleic Acids (DNA and RNA)
What gas is released during photosynthesis?
Oxygen (O₂).
What is the second step of protein synthesis that builds proteins?
Translation
A scientist keeps everything the same except the amount of sunlight a plant receives. What is the controlled variable?
Everything except the amount of sunlight.
If the nucleus were removed from a living cell, what three major functions would the cell lose?
It could no longer control cell activities, store DNA, or direct protein synthesis.
Which four biomolecules are responsible for providing energy, storing energy, building and repairing tissues, and storing genetic information?
Carbohydrates, lipids, proteins, and nucleic acids.
What organelle performs cellular respiration?
The mitochondria.
What does DNA stand for?
Deoxyribonucleic Acid.