Which of the following contain their own genomes?
a. Mitochondria, but not chloroplasts and peroxisomes
b. Chloroplasts, but not mitochondria and peroxisomes
c. Mitochondria and chloroplasts, but not peroxisomes
d. Mitochondria, chloroplasts, and peroxisomes
Answer: c. Mitochondria and chloroplasts, but not peroxisomes
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In which terrestrial biome is biodiversity the greatest?
a. Temperate forests b. Boreal forests c. Tropical rainforests d. Subtropical deserts
Match the scientist(s) on the left with the statement on the right
A) proposed the protein-lipid-protein "sandwich" model of the cell membrane B) proposed the "unit membrane" model based on electron microscopy images of the "railroad track" pattern of membranes C) proposed the fluid mosaic model of the cell membrane D) described the chemical nature of the cell membrane E) created lipid monolayers from solubilized cell membrane lipids F) determined the 3D structure of a membrane protein demonstrating transmembrane segments G) created lipid bilayers from solubilized cell membrane lipids H) demonstrated that a biological membrane is a lipid bilayer 1) Davson and Danielli 2) Gorter and Grendel 3) J. David Robertson 4) Irving Langmuir 5) Unwin and Henderson 6) Charles Overton 7) Singer and Nicolson
The step of translation in which amino acids are added to the growing polypeptide is
mitosis. initiation. elongation. termination. transcription.
In what way might gene duplication play a role in evolution?
What will be an ideal response?