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cluponka [151]
3 years ago
6

Archaea differ from bacteria in that archaea

Biology
2 answers:
o-na [289]3 years ago
7 0

Answer:

The correct answer is A) Have diverse cell wall compositions

Explanation:

Both bacteria and archaea comes under prokaryotes because they both lack a membrane-bound nucleus. The difference between archaea and bacteria is in their cell wall composition.

The bacterial cell wall is made up of peptidoglycan and the archeal cell wall is made up of pseudo-peptidoglycan. In bacteria, peptidoglycan contains N acetyl muramic acid and N acetyl glucosamine unit but in archaea, the N acetyl muramic unit is replaced by some other unit and the linkage of two units is also different in archaea. So the right answer is A.

Alenkasestr [34]3 years ago
4 0

Answer:

A) Have diverse cell wall compositions

Explanation:

The Archaea bacteria are the unicellular prokaryotes which share common features with the Eubacteria and the Eukaryotes.

Like Eubacteria the Archaea do not possess a well-defined nucleus, they reproduce by binary fission, use a variety of organic compounds as food but the difference between them is the composition of the cell wall.

The cell wall of archaea bacteria differs from that of the eubacteria as the cell wall of eubacteria contains the peptidoglycan whereas the archaebacteria do not possess peptidoglycan but a similar molecule with different sugar called pseudo-peptidoglycan.

Thus, Option-A is the correct answer.

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Answer:

Rate of cellular respiration is higher.

Explanation:

Photosynthesis is a process in which plants makes its food. This food is very significant for the plant and those who eats these plants. The factors which affect photosynthesis ,light intensity,carbon dioxide  and temperature.

Light intensity: Without  enough light plant cannot photosynthesize even there is plenty of carbon dioxide and temperature.

If there is no light the carbon dioxide uptake is below Zero(0) With no light there is no photosynthesis.So the rate of respiration higher than the photosynthesis.

If the light intensity increased the rate of photosynthesis will also be higher and more carbon dioxide uptake by the plant during photosynthesis

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4 0
4 years ago
Cells have specific organelles with different structures and functions. Can you compare the mitochondria and chloroplast in term
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3 years ago
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Answer:

A

Explanation:

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The lactose (lac) operon in E. coli is an example of a repressed gene when lactose is not available in a cell. In 3-5 sentences
irakobra [83]

Answer:

Please find the detailed explanation of this statement below

Explanation:

Firstly, a repressed gene is a gene whose expression has been inhibited or repressed. The lac operon in E.coli bacteria is a regulatory unit containing structural genes, a single promoter and operator regions. The promoter is the region where the transcription enzyme (RNA polymerase) binds to in order to transcribe the genes in the lac operon. The structural genes in the lac operon can only be expressed in the presence of lactose sugar.

However, in the absence of lactose, LAC REPRESSOR, which is a transcription factor (protein), prevents the binding of RNA polymerase to the PROMOTER region by binding to the OPERATOR region of the lac operon. This inhibits the expression of the lactose genes in the operon.

Note that, the structural genes in the lac operon (lacZ, lacY, lacA) code for proteins that help break down lactose sugar for energy in the E.coli bacteria. Therefore, a bacteria cell with a repressed lac operon will be unable to degrade lactose sugar.

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3 years ago
A particular bird species found in North America obtains most of its food energy by catching and eating insects. A mutation aris
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