What appears to be the range of the number of protein-coding genes per genome in eukaryotes?
What will be an ideal response?
5000 to about 45,000
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A biological safety cabinet filters out more microorganisms than an N95 mask.
Answer the following statement true (T) or false (F)
The most recent common ancestor of animals and fungi was a multicellular aquatic organism
Indicate whether the statement is true or false.
How does cellular respiration differ in prokaryotes and eukaryotes?
a. Eukaryotes use substrate-level phosphorylation; prokaryotes use oxidative phosphorylation. b. Eukaryotes perform reactions in mitochondria; prokaryotes use the plasma membrane. c. Eukaryotes use NAD+/NADH as electron acceptors; prokaryotes use FAD+/FADH2. d. Eukaryotes do not use oxygen; prokaryotes only use oxygen. e. Eukaryotes metabolize only glucose; prokaryotes metabolize only galactose.
A mutation in the Hoxc8gene in the ancestor of modern snakes caused its descendants to have ____
a. no forelimbs or necks b. vestigial forelimbs c. necks but not forelimbs d. no ribcages or limbs e. no forelimbs or hindlimbs