Myoglobin supplies ____ to fuel muscle activity

a. oxygen for aerobic respiration
b. phosphate for ATP formation
c. direct energy for white muscle fiber contraction
d. glucose for lactate fermentation
e. glucose for aerobic respiration


ANSWER: a

Biology & Microbiology

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Answer the following statements true (T) or false (F)

1. All rain forests are tropical. 2. The same biome cannot occur on more than one continent. 3. Only temperature can limit a species' fundamental niche. 4. Microclimate is a term used to describe local variation in climatic conditions. 5. The range of the sugar maple could decrease in response to warming due to climate change.

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Male Jarrow’s spiny lizards ordinarily exhibit strong territoriality only during the ____ mating season, when elevated

blood levels of ____ stimulate their aggressive behavior.

a. summer; estrogen b. summer; testosterone c. autumn; octopamine d. autumn; estrogen e. autumn; testosterone

Biology & Microbiology

Arrange the steps of antibody-mediated immunity in the proper order

1) Plasma cells secrete antibodies. 2) Helper T cells interact with B cells displaying the same antigen-MHC complex. 3) Contact with antigen. 4) Clones of B cells produced. 5) Fragmentation of antigen.

a. 3, 2, 5, 1, 4 b. 3, 5, 2, 4, 1 c. 1, 3, 5, 2, 4 d. 4, 3, 2, 1, 5 e. 5, 3, 4, 2, 1

Biology & Microbiology

The vertebrate lung first appeared in ____

a. fishes b. amphibians c. reptiles d. birds e. mammals

Biology & Microbiology