The phenotype of a person with alpha thalassemia depends on the
A) number of beta globin genes.
B) presence or absence of a sickle cell mutation.
C) number of alpha globin chains.
D) rate of replication of the alpha globin genes.
C) number of alpha globin chains.
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The endosymbiotic theory says that precursor eukaryotic cells acquired cilia by endosymbiosis with a(n) ________ ancestor and others gained photosynthetic ability from endosymbiosis with a(n) ________ ancestor.
A. helminth, algal B. spiral, cyanobacterial C. protozoan, algal D. archaeal, cyanobacterial
The transformation of water from a liquid state to a gaseous state is known as
A) condensation. B) evaporation. C) saturation. D) solidification.
Which of the following best describes the chemical equation for photosynthesis?
A) Carbon dioxide + Sugar + Energy = Oxygen + Water B) Oxygen + Water + Carbon dioxide = Sugar + Energy C) Water + Carbon dioxide + Energy = Sugar + Oxygen D) Oxygen + Sugar = Water + Carbon dioxide + Energy
What is the phylogenetic classification of the Domain Bacteria based on?
A) Cell morphology B) rRNA sequences C) Gram stain reaction D) Habitat