Which of the following is a feature of prokaryotic cells but not eukaryotic cells?
a) pili
b) cell wall
c) flagella
d) dna

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes

One drawback of dams is that they can flood land upstream from the dam and reduce water flow downstream from the dam. a. true b. false

The system breaks down the food we eat, while the system transports the tiny food particles to each cell in the body. a. muscular; circulatory b. digestive; respiratory c. circulatory; digestive d. digestive; circulatory