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Ierofanga [76]
3 years ago
13

URGENT!!!!!! PLZ HELP!!!!!!

Biology
1 answer:
Viefleur [7K]3 years ago
6 0
It’s literally a spider
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Most species of cyanobacteria are enclosed in a _____.
Natali [406]

Answer: mucilaginous sheath

Explanation:

These algae are known as "blue algae" because of their pigmentation or "cyanobacteria" because they are prokaryotes. Microbiologists classify cyanobacteria in the realm of Eubacteria. They are the only prokaryote algae. The cellular organization is prokaryotic, without nuclei or organelles. Respiration takes place at the level of plasmalemma and thylakoids. In the center (nucleoplasm), cells contain their genome and circular plasmids. Cyanobacteria often also have a mucilaginous sheath common to many trichomes.

These organisms contain several carotenoid pigments, particularly myxoxanthophyll, which does not occur in any other algae group. Some cyanobacteria are strictly phototrophic, others are optional: they are phototrophic when in the presence of light, but may grow in obscurity using an organic carbon source. Others can use a source of organic carbon as well as inorganic carbon, but only in the presence of light.

8 0
3 years ago
Which microorganisms causes tooth decay?​
nadezda [96]

Answer:

Streptococcus mutans.

Explanation:

Streptococcus mutans is the bacteria (it is still a microorganism) that predominatly causes tooth decay. It is present in all areas of the mouth.

8 0
3 years ago
Disscuse 2 causes and 2 effects of deforestation.
Likurg_2 [28]
Causes:
1. the increase in population and growth of the human race
2. the need for housing and industrial advancements

effects:
1. loss of habitat for wildlife
2 loss of trees for oxygen
7 0
3 years ago
What is the best explanation if the gel of your PCR product shows smeared bands of multiple sizes? Select one:
trapecia [35]

Answer:

e. None of the above

Explanation:

For me as a Researcher, the reason could be increased Concentration of your DNA sample which you are using as your template. Try to decrease the concentration of DNA (up to 100 ng per reaction is enough and can increase up to 200 ng). so the reason for getting non specific bands is increase concentration of DNA  which results in non specific amplification and also degradation of DNA in the reaction which you can see in your gel electrophoresis results.  

i always corrected my results using the same technique that is lowering the concentration of DNA between 100 and 200 ng per single reaction of PCR.

8 0
3 years ago
Which image shows a non renewable resource?<br> 1<br> 2<br> 3<br> 4
xxTIMURxx [149]
How do you add a picture
7 0
3 years ago
Read 2 more answers
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