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