How does Homo sapiens differ from Homo erectus?
1.H. sapiens has larger facial bones, teeth, and jaw.
2.H. sapiens has a rounder skull.
3.H. sapiens evolved from a different evolutionary lineage than H. erectus.
4.H. sapiens was found in Europe but H. erectus was limited to Africa.
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The plant tissue responsible for producing cells that thicken roots and stems is the
A. vascular bundle. B. intercalary meristem. C. apical meristem. D. lateral meristem. E. tracheid.
You are examining an animal in lab which you do not recognize immediately, but dissection shows that it has a backbone and a two-chambered heart, so you classify it among the
A. amphibians. B. reptiles. C. birds. D. fish. E. mammals.
Matching. Choose the most appropriate letter
1. ___ Thermus aquaticus 2. ___ Cyanidium caldarium 3. ___ Amoeba discoides 4. ___ nanobes 5. ___ proto-cells 6. ___ stromatolites 7. ___ cyanobacteria 8. ___ Bangiomorpha pubescens 9. ___ glaucophyte A. contain DNA, but may be too small to be alive B. simple transitional forms between early organic compounds and the first living cells C. red alga resident of hot springs D. first organisms with the noncyclic pathway of photosynthesis E. source of the heat-resistant enzyme used in PCR F. offered support for endosymbiosis G. dome-shaped fossil remains of photoautotrophic bacteria (some nonfossil structures also form. H. protist with photosynthetic organelles that resemble cyanobacteria I. earliest known organism that can be assigned to a modern group
The cell membrane is composed of a bilayer of ________. These molecules have regions that are polar and nonpolar and are therefore ________
Fill in the blank with correct word.