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3 years ago

How many different arrangement of four bases into triplets can be made

1 answer:

dsp733 years ago

5 0

4^3 = 64

There are 64 ways to arrange the four bases (Adenine, Thymine, Cytosine, and Guanine) into triplets (include repeats of bases as well, for e.g. AAT).

Just in case you are confused by my use of Thymine above, one thing to note is that Thymine will be replaced with Uracil in RNA.

Hope this helps! :)

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When our bodies overcome the offensive tactics of a particular microorganism, this is referred to as? a) therapy. b) colonizatio

ikadub [295]

When our bodies overcome the offensive tactics of a particular microorganism, this is referred to as Resistance.

The body's defense against infection is provided by the immune system, a complex network of organs, cells, and proteins that also safeguards the body's own cells.

Our immune system remembers every germ (microbe) that the immune system has ever eliminated, allowing it to promptly identify and eliminate the microbe if it re-enters the body.

The body contains a number of additional mechanisms in addition to the immune system for defending itself against microorganisms, such as:

The skin acts as a waterproof barrier and secretes oil that has antibacterial qualities.

Lungs: Phlegm (mucous) in the lungs collects foreign particles, and tiny hairs (cilia) waft the phlegm upward so that it can be expelled through coughing.

digestive tract: Most germs can be killed by stomach acid and the mucous lining, which contains antibodies.

Added defenses include the anti-bacterial enzymes found in body fluids like skin oil, saliva, and tears, which can lower the chance of infection. Constant bowel and urinary tract flushing are also beneficial.

Learn more about the immune system here:

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1 year ago

Which scenario describes a way that an abiotic factor can impact a marine system? Liquid water turning into solid ice encourages

Sloan [31]

Answer:

Rapid increases in water temperature cause extensive fish kills

Explanation:

Biotic factors are all living organisms that contribute to an ecosystem. On the other hand, abiotic factors are non-living factors, such as climatic factors (temperature, rainfall, wind), edaphic factors (soil type, soil texture, soil aeration etc). Changes of abiotic factors can have a huge influence on living organisms of ecosystem. The effects might be benefical or harmful.

Some of the most common abiotic factors that can impact a marine ecosystem are water temperature, currents, light, alkalinity, oxygent concentration etc.

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3 years ago

Waters in the coastal ocean tend to be more productive than waters of similar depth in the open ocean. What is the main reason f

Jet001 [13]

Answer:

The coastal ocean seems to be more productive than the waters of the similar height in the open ocean due to ample availability of water, sunlight, and nutrients. The coastal ocean has more nutrients due to the process of upwelling, that is, movement of water offshore by the currents.

Also, water situated on the continental shelves is comparatively shallower and thus it is turbulent. This mixing or turbulence keeps settling the nutrients stirred up and accessible, and eventually, ample of nutrients erode off the continents themselves and so water nearby to the shore seems to be greater in nutrients.

On the other hand, in the surface water away from the coastlines, usually, there is a lot of sunlight but no availability of adequate nutrients. Therefore, the majority of the ocean surface is not much productive.

Explanation:

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3 years ago

At what point is meiosis involved in the plant life cycle

Mazyrski [523]

Meiosis is invovled in the production of gametos (sex cells) so that the plant can reproduce. This usually happens during the time the plant is flowering

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2 years ago

1. Which of the following statements are true?

hammer [34]

Your answers would be:

1. ---- B. A cell cannot be subdivided into smaller units that maintain the living state.

2. ---- The organism is a eukaryote because it has a nucleus.

3. ---- D. Water would flow into them because they are hypertonic to external environment.

If you want to know why:

1. The cell is the basic unit of life or in other words, its the smallest unit that makes up a living thing. It does not subdivided further if you are talking about sustaining life. Yes, it is made up of smaller units of organelles, but these organelles work together as a single unit (as a cell), to do life sustaining processes.

2. The organism is a eukaryote because of the presence of a nucleus. This is one of the main features of a eukaryote that differentiates it from a prokaryote. Prokaryotes to not have a true nucleus.

3. Water would flow into them, causing the cell to swell and eventually burst if the concentration of solutes would not even out before then. The process of osmosis is what brings the water into the cell. The cell would have a higher solute concentration than freshwater. Through osmosis, the water would then go to the area of higher concentration, which would be the cell.

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3 years ago

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