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Cell Theory/Scientists
DNA & Protein Synthesis
Sci. Method
Cells
Properties of Water
100
What are the three parts of the cell theory?
1. Cells are the basic unit of life 2. All living things are made of cells 3. All cells come from pre-existing cells
100
These four nitrogen bases are present in DNA
ATCG
100
This an educated guess or possible explanation for an observation.
Hypothesis
100
This organelle creates a boundary between the cell and its environment, allowing some substances to pass through but not all.
cell membrane
100
This property allows water to travel from the roots of a tree up the trunk all the way to the top leaves
Capillary Action: cohesion + Adhesion
200
Scientists who concluded that all cells come from other cells.
Rudolph Virchow
200
The nucleus is the site of this first step of protein synthesis where an mRNA strand is made from a DNA strand
Transcription
200
An experiment should test this number of independent variables.
One
200
This organelle converts energy from the cell into energy that the cell can use.
Mitochondria
200
What is the pH of water?
7 (neutral)
300
Type of organism that first cells were observed in by Robert Hooke.
Cork
300
The type of mutation where one nitrogen base is swapped for another nitrogen base.
Substitution
300
What is the purpose of a control in an experimental set up?
A standard to compare the results to. Receives no experimental treatment (changes).
300
This organelle is responsible for breaking down particles and contains digestive enzymes.
lysosome
300
Water bugs can float on top of water because of this property:
Surface tension
400
These two scientists discovered that all animals are made of cells and all plants are made of cells.
Schwann and Scheleiden
400
Translation occurs here
Ribosomes in the cytoplasm
400
A hypothesis that has been tested and supported by many investigations but still not considered proven is a (blank)
theory
400
DAILY DOUBLE!!!!!!!! This is the function of the Golgi apparatus
sorts proteins and packages them into vesicles to be transported to the proper destination, like a post office
400
This property allows water to dissolve more substances than virtually any other liquid in the world.
Universal Solvent
500
Scientist who disproved that life can arise from nonliving things (aka Spontaneous generation)
Louis Pasteur
500
Each _________ codes for a specific __________ _______ which are bonded together to form a ____________.
1. codon 2. amino acid 3. polypeptide (or protein)
500
A scientist wants to test the effect of watering on a new species of plant. He leaves three plants outside. The first one he gives no water to. The second he waters once a day. And the third plant he waters 3 times a day. After a week the plant that was watered once a day is thriving while the others are wilted. Identify the independent and dependent variables.
IV= water DV= plant growth
500
These are organelles that plant cells have that animal cells do not.
Chloroplasts and cell wall
500
What is an example of the benefit of ice being able to float on top of a pond?
Insulates the water so plants and animals can survive.