Human Body Systems
A group of tissues working together:
-Mutation
-Organ
-Cell
-Organ
What is a testable explanation for an observation?
-Hypothesis
-Observation
-Independent variable
-Hypothesis
Evolution – Change in _________ over time.
Species
Molecule that carries genetic information:
-Cell
-DNA
-Gene
-DNA
Basic unit of life:
-Atom
-Cell
-Nucleus
-Cell
What does the digestive system break down?
Food
Independent variable – Factor that __________ in an experiment.
Changes
Inherited trait that helps survival:
-Natural Selection
-Variation
-Adaptation
-Adaptation
Trait– _______________ inherited from parents.
Characteristics
Chloroplast is the site of photosynthesis in ________ cells.
Plant
What does the respiratory system exchange?
Gas
Dependent variable – Factor that is ______________ in an experiment.
Measured
True or False?
Variation – Differences among individuals of a species.
True.
Heredity – Passing traits from __________to __________.
Parents to Offspring
True or False:
Homeostasis means maintaining a stable internal environment.
True
Which body system transports materials throughout the body?
Circulatory
What is logical conclusion based on evidence?
-Inference
-Observation
-Control group
-Inference
The disappearance of a species is called....
Extinction
Explain the difference between dominant and recessive:
Controls what enters and leaves the cell:
-Cell Membrane
-Mitochondria
-Chloroplast
Cell Membrane
Explain the difference between the immune system and the nervous system...
Explain the significance of having a control group...
Standard for comparison
Preserved remains or evidence of past life.
Fossils
True or False:
False.
The term for diffusion of water through a membrane.
Osmosis