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iragen [17]
3 years ago
6

What is dna? how do scientists isolate dna in order to study it? how does dna differ from person to person? how can tools of mol

ecular biology be used to compare the dna of two individuals? what are restriction enzymes? what are restriction fragment length polymorphisms? what is gel electrophoresis and how can the results of this technique be interpreted?
Biology
1 answer:
bagirrra123 [75]3 years ago
3 0
Deoxyribonucleic acid
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I need some help with spelling. Help me with the ones I haven't done yet and check my other answers. The word box is there
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Interrupt, rupture
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This is what I got. I hope this helps :)



8 0
3 years ago
To be considered part of the same population organisms must have a reasonable chance of mating with each other. Are two wild ros
IRISSAK [1]

Two questions have been asked, and responded to

Answer:

For question 1: The statement is true

For question 2: Yes, the two wild roses are of the same population

Explanation:

Population is simply the total number of organisms of the same species LIVING and BREEDING together in a given area.

I) To be considered part of the same population, two of more organisms MUST BE able to mate i.e produce gametes that are viable enough to fuse together and create new offsprings.

2) Yes! Two wild roses separated by a wide road belong to the SAME POPULATION because

- it is still a given area or habitat

- transfer of pollen grains by agents such as wind or insects is possible, thus breeding still occurs.

4 0
3 years ago
The leaves of a desert plants often have two or more layers of palisade mesophyll, rather than the single layer that is a charac
Degger [83]

PALISADE CELLS ARE CELLS FOUND WITHIN THE MESOPHYLL IN LEAVES OF DICOTYLED ON PLANTS.THEY CONTAIN CHLLORPLASTS,WHICH CONVERT THE ENERGY STORED IN PHOTONS TO CHEMICAL ENERGY THROUGH PHOTOSYNTHESSIS,WHICH IS MADE UP OF TWO MIN STAGES;THE LIGHT DEPENDENT REACTIONS AND LIGHT INDEPENT REACTIONS
4 0
3 years ago
20P!
ycow [4]

They have an adaptation called trigger hairs.

7 0
3 years ago
Beyond their role in energy transfer, what other benefit do microorganisms that act as producers provide for ecosystems?
insens350 [35]

Answer:

The microorganisms present metabolic wastes that serve as the primary source of food for other living things.

Bacteria that live free in the soil or in symbiosis with plants are essential to fix nitrogen, both nitrates and ammonia. These bacteria take nitrogen directly from the air, originating compounds that can be incorporated into the composition of the soil or living beings.

This property is restricted only to prokaryotes and is widely distributed among different groups of bacteria and some archaeobacteria. It is a process that consumes a lot of energy that occurs with the mediation of the enzyme nitrogenase, which the rest of the living organisms that cannot do or comply with this process is because they lack said enzyme.

Dunaliella is a genus of microscopic algae of the Chlorophyceae class and of the order Volvocales. All are unicellular, although with very varied morphologies.

Morphologically, its main characteristic is that they lack a rigid polysaccharide cell wall.

The ecology of this genus of green algae is characterized by its high tolerance to salinity, with eukaryotic organisms having greater tolerance to salt. They are euryhaline, adapted to salt concentrations from 50 mM NaCl to almost 5.5 M NaCl.

Explanation:

By nitrogen fixation is meant the combination of molecular nitrogen or dinitrogen with oxygen or hydrogen to give oxides or ammonia that can be incorporated into the biosphere. Molecular nitrogen, which is the majority component of the atmosphere, is inert and not directly usable by most living things. Nitrogen fixation can occur abiotic (without the intervention of living beings) or by the action of microorganisms (biological nitrogen fixation). Fixation in general involves the incorporation into the biosphere of a significant amount of nitrogen, which globally can reach about 250 million tons per year, of which 150 correspond to biological fixation.

6 0
3 years ago
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