Characteristics of Life
What are the 7 characteristics of life?
Reproduction,
Adapt
Response to stimuli
Energy use
Homeostasis
Organized by cells
Grow and develop
How many parents are required for sexual reproduction?
How many parents are required for asexual reproduction?
2, 1
Is cutting paper in half a physical reaction or a chemical reaction? Why?
Physical because it does not change the chemical composition of the paper.
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What is the charge of a proton? Electron? Neutron?
Positive, negative, neutral
Who proposed that species can change over time, that new species come from pre-existing species, and that all species share a common ancestor?
Charles Darwin
What is the smallest living thing?
Gametes are a type of specialized cell that are required for sexual reproduction. Each parent provides one gamete. What are the names of these two cells?
Sperm and egg
What are the three primary states of matter?
Solid, liquid, gas
What makes one atom different from the other?
The number of protons in the nucleus
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A desert biome has two different species of rabbits. Species A is brown and Species B is white. Which species of rabbit is more likely to survive in the desert biome? Why?
Brown because they have adapted to blend into their environment.
Dropping a hot pan because it burned your hand is an example of which characteristic of life?
Response to stimuli
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What is one advantage of sexual reproduction? Disadvantage?
TBD
The atoms in a mysterious substance are very close together and vibrating ever so slightly. What state of matter is the mysterious substance? Why?
Solid because the atoms are very close together and barely moving.
What does the atomic number tell us about an atom?
The number of protons in the nucleus
What is a modification of an organism or its parts that makes it more fit for existence under the conditions of its environment?
Adaptation
Before a big soccer game, Charlie always eats a big dinner. Which characteristic of life does this fact best describe?
Brown hair is dominant (H) and red hair is recessive (h). What is one possible genotype for someone with red hair?
hh
The atoms in a mysterious substance are widely separated from each other and moving in seemingly random order. What state of matter is the mysterious substance? Why?
Gas because the atoms are separated and moving freely
What two particles are found in the nucleus?
Protons and neutrons
What does the fossil record tell us about life in the past?
It gives us an idea of what plants and animals lived in a certain time period and where.
Which characteristic of living things best explains why your legs and arms get longer and stronger as you get older?
Grow and develop
What is the difference between a genotype and a phenotype?
Genotype is the gene- the two alleles- and a phenotype is the physical appearance.
Which state(s) of matter takes the shape of the container they are placed in?
Gas and liquid
How do you figure out the number of neutrons in an atom?
Atomic mass - atomic number
A mouse population living in a rainforest biome used to have dark brown fur to help them blend into the forest floor, but they recently developed an adaptation (mutation) that results in white fur. What do you predict will happen to the new population of white mice?
TBD