Dating to about 3.5 million to 3 million years ago, the famous fossil "Lucy," found in northern
Ethiopia, represents a member of which species?
a. Homo habilis
b. Homo erectus
c. Australopithecus africanus
d. Australopithecus afarensis
e. Homo neanderthalensis
D
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Due to the lack of an enzyme to break down lipids, excess accumulation of lipids in the brain leads to a human disease called Tay Sachs syndrome. Which organelle is likely to be the one that lacks the proper enzyme needed for lipid breakdown?
A. lysosome B. tonoplast C. mitochondrion D. Golgi apparatus E. peroxisome
Which of the species were probably herbivorous? On which test results did you base this conclusion?
a. species 1 and 4 because of the presence of starch b. species 2 and 4 because of the presence of protein and amino acids c. species 2 and 3 because of the presence of starch and low amino acids andprotein d. species 1 and 3 because of the presence of protein and amino acids
Explain the importance of checkpoints to the cell cycle
What will be an ideal response?
In the food chain below, what does the garden spider represent?crabgrass-cricket-garden spider-blue jay-red-tailed hawk
A. Herbivore B. Primary producer C. Secondary carnivore D. Detritivore E. Primary carnivore