What is an environmental result from burning fossil fuels?

a. the release of greenhouse gases into the air
b. the release of smoke into the environment
c. the production of carbon monoxide
d. the release of sulphur into the environment
e. the production of smog


Answer: a. the release of greenhouse gases into the air

Biology & Microbiology

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The ____ are limited to three groups of proteobacteria

a. chemoautotrophs only b. chemoheterotrophs c. photoautotrophs d. photoheterotrophs only e. chemoautotrophs and photoheterotrophs

Biology & Microbiology

Shortly after fertilization, successive cell divisions convert the zygote into a multicellular embryo during a process

known as ____.

a. meiosis b. parthenogenesis c. gastrulation d. cleavage e. blastulation

Biology & Microbiology

Active transport may be described as all of the following EXCEPT

a. is concerned with establishing the resting potential of a neuron. b. counters the process of diffusion. c. allows transport of atoms across the plasma membrane of the neuron against the concentration gradient. d. uses energy to power transport. e. physically blocking transport.

Biology & Microbiology

The Krebs cycle requires 

A. a four-carbon acid. B. coenzyme A (CoA). C. an acetyl group (2C). D. All of these answers are true.

Biology & Microbiology