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scoray [572]
3 years ago
10

Biological carbon acts on a timescale of ______________ of years.

Biology
1 answer:
belka [17]3 years ago
8 0

Answer:

Millions

Explanation:

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All of the following could be considered reconstruction except
Alexxandr [17]
The last one, " Scientists predict a volcano will erupt based on current volcanic activity." This one is false because they actually predict a volcanic eruption by the volcanic waves and other complicated things.
6 0
3 years ago
36) How do we describe transformation in bacteria? A) the creation of a new strand of DNA from a DNA template molecule B) the cr
Tanya [424]

Answer:

The correct answer is D) assimilation of external DNA into a cell

Explanation:

A bacteria is called transformed when it consist a genetic material that is not it's own but taken from outside the cell. So transformation of bacterial cell defines the uptake of foreign DNA by bacterial cell from its surrounding.

This transformation in bacteria is necessary because it provides bacteria some new and extra genes that help it to survive in the adverse and changing environment.  

Transformation can result in getting the antibiotic-resistant gene to the bacteria which protect the bacteria from antibiotics during infection when antibiotic is used against it.

So the right answer is D) assimilation of external DNA into a cell.

3 0
4 years ago
Every day, Americans use less than 3.5 gallons of water to cook, clean, flush toilets, and bathe.
Marianna [84]
This is false because people could use way much water
7 0
3 years ago
A postsynaptic neuron has three presynaptic inputs - from neurons X, Y, and Z. Stimulation of neuron X causes the postsynaptic n
xenn [34]

Answer:

Y is probably excitatory and Z is probably inhibitory

Explanation:

  • Two neurons communicate with each other generally by releasing neurotransmitters.
  • The neuron which releases the neurotransmitter is termed as presynaptic neuron and the neuron to which the neurotransmitter binds to exert its effects is called as postsynaptic neuron.
  • Based on the nature of the neurotransmitter released, the presynaptic neurons can either be inhibitory or excitatory in nature.
  • The change in the membrane potential of the postsynaptic neurons depends on the total sum of inputs coming from different pre synaptic neurons at a given time.
  • From the given situation, the stimulation by X alone is causing deploarization of 0.5 mV which shows that it is causing excitation, and since depolarization is increasing when X and Y are stimulaneously stimulated Y is also excitatory in nature. However the depolarisation is not occurring when X and Z are stimualted together and hence, Z is probably inhibitory in nature.
3 0
3 years ago
Menciona las cuatro fases de la mitosis​
Zolol [24]

Answer:

profase, metafase, anafase y telofase :)

Explanation:

( translation: prophase, metaphase, anaphase,and telophase)

3 0
3 years ago
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