BIO Unit 4 Q18

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people are afraid to eat them.

A disadvantage of genetically modified organisms is

ways that humans have changed allele frequencies to meet our own needs.

Artificial selection, agriculture, selective breeding and genetic engineering are all

carbon dioxide.

Plants contain starches and cellulose. Starch and cellulose are polysaccharides (polymers of sugars). The carbon in starches comes from

sunlight energy enters, is converted to chemical energy and is released as heat

Which of the following best describes the flow of energy through an ecosystem?

natural selection

Which of the following is NOT a way that humans have changed allele frequencies to meet our own needs?

has the potential to reduce pesticide use.

Genetic engineering

Insert the gene from a different species in the vector, infect a plant cell with the new gene, and grow a plant from the cell.

How could you create a transgenic plant?

flow through, cycle within

In an ecosystem, it is most common for energy to _________the ecosystem, and for chemicals to _____________ the ecosystem.

producers.

In an ecosystem, photosynthesis occurs in the

used to move genes from one organism to another.

In genetic engineering, vectors are


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