________ are long, slender structures that enable a cell, such as a sperm, to swim
Fill in the blank(s) with correct word
Flagella
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An important message from the work of Thomas Malthus that influenced Charles Darwin was
A. animals tended toward "human perfection." B. only a fraction of any population will survive and reproduce. C. population size of humans can. D. inheritance of acquired characteristics. E. none of these. Charles Darwin was influenced by John Ray not Thomas Malthus.
If nitrifying bacteria were not present in a soil, plants would ____
a. take up nitrogen for their use mainly as NH4+ b. not survive because they could not get useful nitrogen c. take up nitrogen for their use mainly as N2 d. take up nitrogen for their use mainly as NH3 e. take up nitrogen for their use mainly as NO3-
Based on what is known about FOXP2, could Neandertals speak?
A. Yes, they had the same FOXP2 mutation as humans. B. No, they had the same FOXP2 mutation as humans. C. No, they had the same FOXP2 sequence as chimpanzees. D. Yes, they had the same FOXP2 sequence as both humans and chimpanzees. E. Yes, they had the same FOXP2 sequence as chimpanzees.
Which taxon is NOT gram-positive?
A) Actinobacteria B) Firmicutes C) Sphingobacteria D) Streptococcus