The endosymbiotic theory explains the origins of which of the following components of a eukaryotic cell?

a. mitochondria
b. chloroplasts
c. internal membranes
d. All of these are correct.


d. All of these are correct.

Biology & Microbiology

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Boiling water does not increase in temperature when additional heat is applied because

What will be an ideal response?

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Outline the three stages involved in the transcription of a DNA molecule. What will be an ideal response?

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Which brain region controls the secretion of pituitary hormones and exerts direct control over many other aspects of homeostasis?

A) thalamus B) hypothalamus C) hippocampus D) cerebellum

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By which of the following mechanisms can a cell transport a substance from a lower to a higher concentration?

A) simple diffusion B) facilitated diffusion C) active transport D) extracellular enzymes E) aquaporins

Biology & Microbiology