Name for all bacteria

1 answer:

4 0

Bacteria are the plural of bacterium, which are microscopic one-celled organisms. They are found everywhere and can be harmful, as in infections; or they can be beneficial, as in fermentation or decomposition. Five types of bacteria are: Coccus, Bacillus, Spirillum, Rickettsia, and Mycoplasma.

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adenine,guanine,cytosyne and thymine are the four nitrogenous bases present in the DNA of all organisms.Which scientist discored

laila [671]

The scientist who is said to have discovered all the four nitrogenous bases present in the DNA of all organisms is, Erwin Chargaff, an Austro-Hungarian biochemist who immigrated to the United States. Hope this helps!

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3 years ago

A neuron can receive thousands of EPSPs from different neurons, and responds by triggering or not triggering an action potential

Korvikt [17]

Answer:

The addition and response to the net effect of postsynaptic potentials is called Spatial summation

Explanation:

Signal summation occurs when impulses received by a neuron are eummed together to reach the excitation threshold to fire a neuron. It occurs at the axon hillock of a neuron. Signal summation occurs since each neuron is connected to many other neurons, often receiving multiple impulses from them, both excitatory and inhibitory.

Signal summation can either be temporal or spatial.

Temporal summation, occurs when impulses received at the same place on the neuron in close temporal succession add up to initiate an action potential in the neuron.

Spatial summation occurs when impulses received simultaneously at different places on the neuron add up to initiate an action potential in the neuron.

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2 years ago

Which of the following continents was not covered by ice during the Pleistocene ice age?

s2008m [1.1K]

I think the correct answer from the choices listed above is option C. The continent that was not covered by ice during the Pleistocene ice age. This is because the southern location of this nation made it much harder for ice to form, even during this time. Hope this answers the question.

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3 years ago

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Copying of the information in dna into rna, which can exit the nucleus is called

Oksi-84 [34.3K]

Definition:
"Copying of information from DNA to RNA which exit nucleus is known as transcription"

Explanation:

Transcription is a vital process for living organisms, because it is a staring point for protein synthesis. It occurs inside the nucleus and is carried out by RNA polymerase enzyme. In eukaryotes RNA pol is of three types: these are RNA Pol 1, RNA Pol 2, and RNA Pol 3. In prokaryotes it is of only one type.

Steps in transcription:
Transcription consists of three main steps
1. Initiation:
In this step RNA pol attach to DNA template at 5 prime end in the promoter region to start the formation of complementary strand of RNA. In prokaryotes there is a region called Pribnow box, with the consensus sequence TATAAT present about 10 base pair away from site that serves as a transcription initiation. In eukaryotes the promoter region is more complex it contain activator and enhancer.

2. Strand elongation:
Once transcription is initiated, the DNA double helix unwinds and RNA polymerase reads the template strand, adding nucleotides to the 3′ end of the growing chain.

3. Transcription Termination:
Terminator sequences are found close to the ends of non-coding sequences. Before termination polyadenylation occurs.

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2 years ago

What are the five functions of the skeleton system

Ann [662]

Protection- the cranium and ribs protect the brain and vital organs in the chest

Shape- gives shape to the body and makes you tall or short

Support- holds your vital organs in place when playing sports. The vertebrae column holds the body upright

Movement- muscles are attached to bones, which are joined. When the muscles contract, the bones move

Blood Production- red blood cells(to carry oxygen) and white blood cells(to protect against infection) are produced in the bone marrow of some bones

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2 years ago