Biology, 19.08.2019 14:30 ga142000

How are archaea and bacteria alike?
a. to survive, they must live in cold environments.
b. their cells are small and lack a nucleus.
c. their genetic material is similar.
d. their structure includes a cell wall.

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Answer from: Katelyn1236

The correct answer would be b. Their cells are small and lack a nucleus.

Both archaea and bacteria are prokaryotic organisms that is, they both are devoid of a nucleus and other membrane-bound organelles such as mitochondria, chloroplast et cetera.

They also share a similarity in terms of shape and size of the cells. Both of them are unicellular in nature and can not be seen by naked eyes.

They show variations in their genetic and biochemical ways. For example, archae contains three RNA polymerases whereas bacteria contain a single RNA polymerase.

Their cell wall also show variation in composition. For example, a bacterial cell wall contains peptidoglycans, whereas archae cell wall does not.

Thus, we can say that archae and bacteria are similar in a manner that their cells are small and lack a nucleus.

Answer from: aomoloju4202

Archaea and bacteria are similar in that their cells are small and lack a nucleus.

Further Explanation Living organisms can either be classified as prokaryotes or eukaryotes. Eukaryotes These are organisms that contain membrane bound nucleus and membrane bound organelles such as endoplasmic reticulum, Golgi apparatus, mitochondria, etc. Prokaryotes These are organisms that lack nucleus membrane and a nucleus together with membrane bound organelles. They include lower organisms such as bacteria and Archaea. Archaea and bacteria are examples of prokaryotes since they lack nucleus and other membrane bound organelles such as mitochondrion, endoplasmic reticulum, etc. Similarities between Archaea and Bacteria Both are prokaryotic organisms They have ribosomes which is the site for protein synthesis Both lack membrane-bound cellular organelles such as mitochondrion. Both archaea and bacteria have flagella Differences between Archaea and Bacteria Archaea cell wall contains while the cell wall of bacteria contains peptidoglycan Bacteria can form spores which remain dormant for years until they get a suitable habitat for them to grow, while Archaea do not. Archaea live in extreme and harsh environments such as salt lakes, oceans,etc. while bacteria are in areas such as in the soil, organic matter, etc.

Keywords: Prokaryotes, Archaea, Bacteria

Learn more about Archaea: Bacteria: Prokaryotes: Eukaryotes:

Level: High school

Subject: Biology

Topic: Classification

Subtopic: Bacteria and Archaea

Answer from: Quest

helicase, i think thats it

Answer from: Quest

cells use diffusion to get substances in and out of themselves. that diffusion will occur across the cell membrane or the outer covering of the cell. because we are talking about the surface of the cell, surface area and volume are important factors here. as a cell increases in size, its surface area and volume increase as well. we call that the surface area to volume ratio (sa: vol). but the catch is that volume increases at a greater rate than surface area. in other words, as a cell gets bigger, the sa: vol gets smaller. so a really small cell like bacteria is mostly cell membrane (surface) with very little contents (volume). a really big cell like an egg, is mostly insides with a super thin membrane. so what ends up happening is that the cell cannot efficiently diffuse all of the stuff it needs in/out to survive. therefore cell size is limited to about 100mm. so how do we make organisms bigger than 100mm? cells divide! by dividing and becoming multicellular, organisms are able to grow! check out the diagrams i attached to see the effect of sa: vol. i hope this ! good luck!

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How are archaea and bacteria alike?
a. to survive, they must live in cold environments.
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