Biology, 02.04.2020 02:40 antwain2

Recent work in classification of life on Earth has shown that what were once called prokaryotes are much more diverse than ever suspected. The prokaryotae are now divided into two domains, the Eubacteria and the Archaeabacteria, as different from each other as either is from the Eukaryota. One organism, the blue-green algae or cyanobacteria, has left a fossil record that dates back nearly 3.5 billion years and is among the oldest fossils known. A few hundred years ago, this organism was classified as a plant, then more recently as a protist. Today it is classified in the kingdom Eubacteria. Which of these would NOT be evidence that scientists compiled to place cyanobacteria in the Eubacteria.

A) presence of cell walls containing peptidoglycans
B) presence of chloroplasts for photosynthesis
C) contains a nucleoid rather than a nucleus
D) forms an outer capsule with slime coat

Answers: 1

Show answers

Another question on Biology

Biology, 22.06.2019 15:30

Wich is not standing in the way of astronomers getting a good view of different star

Answers: 2

Answer

Biology, 22.06.2019 19:30

Which of the following options describes photosynthesis correctly? question 8 options: a plant uses carbon dioxide and water to make oxygen and nitrogen a plant breaks down sugar to make carbon dioxide. a plant uses sunlight, carbon dioxide, and water to make sugar and oxygen. a plant uses sunlight to break down sugars for digestion into water and oxygen.

Answers: 1

Answer

Biology, 22.06.2019 22:30

Why can cancer in the lymph nodes (lymphoma) be particularly dangerous? a. the lymph node's ability to produce cancer-fighting lymphocytes would be compromised. b. the lymph node's ability to produce cancer-fighting lymph would be compromised. c. the lymph nodes produce lymph, which nourishes growing cancer cells. d. the lymph nodes produce chyle, which nourishes growing cancer cells.

Answers: 1

Answer

Biology, 22.06.2019 23:00

What characteristic does giardia have that makes it a protist, a characteristic that all other protists have? a. it is a unicellular eukaryote. b. it is a eukaryote that is not an animal, a plant, or a fungus. c. it is parasitic and has flagella. d. it spends part of its time in a body of water.

Answers: 1

Answer

You know the right answer?

Recent work in classification of life on Earth has shown that what were once called prokaryotes are...

Questions