Identify which features belong to Homo habilis versus Homo erectus.

A. Fossils span between 1.9 and 0.3 MYA
B. Older species
C. Scavengers rather than hunters
D. First species to use tools


A. Homo erectus
B. Homo habilis
C. Homo habilis
D. Homo habilis

Biology & Microbiology

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Long filaments containing microtubules and used for cellular locomotion are called ________, whereas short fibers containing microtubules and used for cellular locomotion are called ________.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

In the illustration below, would the sodium-potassium pump be categorized as a uniporter, symporter, or antiporter?



a. uniporter
b. symporter
c. antiporter
d. none of these

Biology & Microbiology

Most of the interior of a leaf consists of soft, thin-walled, living ________ cells

A) parenchyma B) collenchyma C) epidermal D) sclerenchyma E) guard

Biology & Microbiology

A species of tree produces clusters of dense, fleshy red berries. The seeds of this tree are most likely dispersed by _____

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology