1. In the simplified nitrogen cycle below , circle the two processes that require bacteria .

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BIOS 195

• In the simplified nitrogen cycle below , circle the two processes that require bacteria .

–Answer Denitrification

• Bacteria typically have where as eukaryotes have .

–Answer One chromosome that is circular;many are linear

• Plant cells

–Answer Have a non living cell wall

• Even though nitrogen constitutes 78 % of Earth's atmosphere , the amount available for

living things nearly all comes from –Answer a few groups of nitrogen fixing bacteria

• Which of the following biogeochemical cycles does not have a significant gaseous phase

–Answer Phosphorous

• Nutrients. In ecosystems while energy. .

–Answer Cycles; flows

• DNA replication occurs

–Answer During the S phase

• I'm animals meiosis occurs in

–Answer Germline cells that divide to form sperm and eggs

• Which of the following is not true of homologous chromosome pairs?

–Answer 1 / 2

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They come from only one of the individual's parents

• What two factors determine where biomes are found on the planet

–Answer Teme- ture and precipitation

• Why is sexual reproduction and meiosis important for an organism ? Explain

–Answer Sexual reproduction give genetic variation that is important for survival

• What are the two ways that genetic variation is generated during meiosis-

–Answer cross over and random allignment

• What is one way that humans are impacting the global carbon cycle

–Answer The use of cars has a large impact on the global carbon cycle

• Why do heavy meat eaters have a higher carbon footprint then those who eat less meat

–Answer Heavy meat eaters have a bigger impact do to the amount of carbon that's released from the animal's

• According to the video you watched this week what is one trait that is different between

teosinte and maize –Answer Teosinte is grass like and maize is a stock

• Why are panamanian golden frogs going extinct

–Answer There is a fungus being transported by people

• What is one thing you want to know about the sixth extinction ( the phenomenon , not the

book ) following your reading of Chapter 1 ?–Answer I want to no how scientist track the animals going extinct

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