In respiration, in what stages is carbon dioxide produced?


Answer: It's produced in pyruvate oxidation and in the Krebs cycle.

Biology & Microbiology

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Hybridization of closely related plant species by

doubling the chromosome number always results in a. allopolyploids. b. autopolyploids. c. infertile hybrids that must reproduce asexually. d. inviable hybrids. e. hybrids that are similar to only one of their two parents.

Biology & Microbiology

The border across which genes can flow between two

populations is called a. the contact zone. b. the parapatric zone. c. the allopatric zone. d. the sympatric zone. e. none of these.

Biology & Microbiology

Which of the following organelles will be concentrated in the first pellet produced by differential centrifugation?

a. Mitochondria b. Nuclei c. Endoplasmic reticulum d. The cytosol

Biology & Microbiology

Hummingbirds are small birds that require a regular food supply

When hummingbirds are faced with a situation that decreases their food supply, such as a storm, which of the following adaptations would be most useful for the bird to survive such an unpredictable and short-term absence of food resources? A) shivering B) torpor C) hibernation D) burrowing into soil

Biology & Microbiology