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Grade 8 Life Science

Name __________________________________
Across
The structures and organs that an animal uses to exchange gases with its surroundings make up the ______ system.
A nonliving disease causer.
The cell organelle where photosynthesis occurs.
Organism that make its own food.
The cell packager.
Male flower part
Most nutrients in the body are absorbed here. (2 words)
The shape of DNA. (2 words)
Ultimate source of energy in an ecosystem.
A protein that is a biological catalyst
A trait that helps an organism to survive and reproduce is called a/an ______.
Female flower part
A product of photosynthesis.
The cell _____ controls which substances pass into and out of the cell.
_______ acid is genetic material.
A change in the DNA of a gene or chromosome is called a/an ______.
During ______ the cell's nucleus divides into two new nuclei.
The starting materials for photosynthesis are carbon dioxide and ______.
Down
The smallest unit that carries on life functions.
The _____ converts energy stored in food to energy the call can use.
Diffusion of water across a membrane.
Protein is manufactured here.
A group of similar organisms that can mate with each other and produce offspring that can also mate and reproduce is a ______.
The ecosystem recyclers
Maintain stable conditions
A _____ system transports needed materials to cells and takes away waste.
The differences between individuals of the same species is called ______.
Transport of materials across a cell membrane against the flow.
Groups of like cells that work together
In an ecosystem, they make their own food.
In plant cells but not in animal. (2 words)
_______ are different forms of a gene.
Some bacteria and some protists use a long whip-like ______ to move about.
Body response to disease by producing a/an ______.
Control center of the cell.
A kingdom in which all members are multicellular and autotrophs is _________.
The probability of one brown eyed parent (Bb) and another brown eyed parent (Bb) having a blue eyed child.
Hair-like structures that beat like oars to move protist through water are _____.