Compared to mammals and reptiles, what characteristic prevents amphibians from surviving far from water?
A) Their limbs are too weak to support their weight on land.
B) They do not have any lungs and cannot breathe out of the water.
C) Their eggs do not have an amnion which prevents them from drying out.
D) Their cartilaginous endoskeleton would dry out on land.
C
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The form of energy that is available to living organisms is in the form of
A) sunlight. B) radiation. C) chemical bonds. D) nuclear energy. E) heat.
In brown fat, ________ present in the inner mitochondrial membrane uncouples ATP synthesis from electron transport in infants and other newborn mammals.
A) thermogenin B) fluorocitrate C) coenzyme A D) submitochondrial particles E) respirasomes
Embryonic development begins with a single egg fertilized by a single sperm forming a zygote. The
zygote then undergoes mitosis; how many cells would be present at the conclusion of 4 mitotic divisions?
a. 2 b. 4 c. 8 d. 16 e. 32
Before Linnaeus, scientific names were problematic because they were
a. too brief to be descriptive b. very long and difficult to standardize c. written only in Greek d. written only in Latin