Biology, 02.01.2020 09:31, DoyleAK108
Cyanobacteria, once referred to as blue-green algae, has a fossil record that dates back nearly 3.5 billion years and is among the oldest fossils known. the cyanobacteria/ blue-green algae had cell walls and were photosynthetic. a few hundred years ago, this organism was classified as a plant, then as a protist. today it is classified in the eubacteria because it
a) is photosynthetic.
b) is know to be prokaryotic.
c) is the ancestor of land plants.
d) has cellulose cell walls and chloroplasts.
Answers: 1
Biology, 21.06.2019 21:00, pnicklin00
Amylase is an enzyme found in the human digestive system. why do you think it was important to keep the enzyme temperature about 37 degrees celsius (98.6 degrees f)? describe what might happened the temperature decreased by 10 degrees celsius.
Answers: 3
Biology, 22.06.2019 03:00, Aminton737
What percentage of light hits earth's surface directly?
Answers: 3
Biology, 22.06.2019 05:30, Will1119
Can bacteria reproduce in a way such that when you start out with two bacteria, you get five bacteria? why or why not? * a. yes, because bacteria reproduce sexually, and can produce any number of offspring, just as humans do. b. no, because bacteria grow at an exponential rate. c. no, because when bacteria reproduce, they split into two parts, and two bacteria splitting would result in four bacteria.
Answers: 1
Cyanobacteria, once referred to as blue-green algae, has a fossil record that dates back nearly 3.5...
Engineering, 03.09.2020 19:01
Social Studies, 03.09.2020 19:01
English, 03.09.2020 19:01
Mathematics, 03.09.2020 19:01
History, 03.09.2020 19:01