The enzyme which cuts down the viral dna with no harm to bacterial chromosme is

1 answer:

8 1

Bacteria and restriction enzymes

,use enzymes to cut (and thereby destroy) foreign DNA (such as viral DNA), which would restrict the growth of the virus; own DNA is protected in some way (often by addition of methyl group CH3) to the sequence recognized by enzyme (thus preventing enzyme from binding there)

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Max wants to see if mice that are fed food A grow faster than mice that are fed food B. He measures the mass of the

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mass of mice amount of food

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Both bacteria and amoeba are unicellular organisms. Bacteria are considered to be prokaryotes, whereas amoebas are considered to

Lady_Fox [76]

<span>Though both are unicellular, bacteria doesn’t possess a nucleus or cell organelles, except ribosomes, whereas amoebas possess a well-defined nucleus and all essential cell organelles.
Bacteria are prokaryotic. They do not have membrane-bound organelles. Their DNA is also not enclosed by an envelope. They do not possess a true nucleus.
Amoeba, however, is eukaryotic. Amoebas have a true nucleus, and it is enclosed by an envelope. The organelles are also membrane-bound.</span>

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Explain how humans obtain the energy and matter they need in order to survive ?

Katarina [22]

Hello.

Humans obtain engery by eating food and ingset, <span>carbohydrate, protein and lipid molecules. And get engery from stored fat that is inside the body with vitmans and minarls.

Have a nice day</span>

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4 years ago

Describe one observation that supports the theory that

PIT_PIT [208]

Answer:

The presence of organelle DNA in mitochondria and chloroplast supports the theory that mitochondria and chloroplast originated as independent prokaryotic organism.

Explanation:

The more well documented and generally accepted theory for the origin of eukaryotic organelles is Endosymbiotic Theory. (Margulis 1970).
Recent evidences justify that organelles have originated from the endosymbiotic association of ingested aerobic and and photosynthetic prokaryote, the precursors of mitochondria and chloroplast respectively.
Molecular data have played an important role in supporting the xenogenous origin rather than autogenous origin of organelles.
The idea of independent existence of mitochondria and chloroplast are: they are replicators; they carry genetic information; they have protein synthesising machinery; they have ribosome of prokaryotic type.
The prokaryotic or bacterial origin of mitochondria and chloroplast is supported by the fact like their DNA is simple ,closed and circular with single point of origin; DNA controls the synthesis of their rRNA and tRNA etc.; They have their own ribosome; antibiotic specificity.

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