Which of the following statements about the causes of extinction are true? Check all that apply.
_____ Probability of extinction varies inversely with population size.
_____ Ten 10-hectare habitat patches is not the same as one 100-hectare patch.
_____ Habitat loss is currently the major cause of extinction.
_____ The prehistoric megafauna of North America were spared from extinction because they coevolved with humans.
_____ Probability of extinction is greatest for an endemic species.
__X__ Probability of extinction varies inversely with population size.
__X__ Ten 10-hectare habitat patches is not the same as one 100-hectare patch.
__X__ Habitat loss is currently the major cause of extinction.
_____ The prehistoric megafauna of North America were spared from extinction because they coevolved with humans.
__X__ Probability of extinction is greatest for an endemic species.
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Most cases of viral gastroenteritis are accompanied by high fevers.
Answer the following statement true (T) or false (F)
Which of the following is composed of a 1:2:1 ratio of carbon to hydrogen to oxygen?
a. carbohydrate b. protein c. lipid d. nucleic acid e. steroid
Which type of mutation is possible thanks to the redundant nature of the genetic code?
A) silent B) missense C) nonsense D) frameshift E) splice site
Which type of roots are also known as prop roots?
A. Adventitious roots B. Aerating roots C. Aerial roots D. Contractile roots E. Coarse roots