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zzz [600]
3 years ago
15

A difference between bacteria and archaea is

Biology
1 answer:
frosja888 [35]3 years ago
8 0
The answer is a; at one point archaea and bacteria were thought to be the same thing, but upon further analysis a few differences were found(namely the differences in there cell membrane/walls)
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Like a key in a lock, the shape of the _____ must bind with the _____ of the receiving neuron.
likoan [24]

Neurotransmitters are the chemical molecules, which help in transfer of the signals from one neuron to another. Inside the neurons, the signals are transferred as electrical signals, but at junction of two neuron, which is known as synapse, the signals are transferred in chemical forms.

These neurotransmitters have a definite shape and are recognized by the receptors present in the receptor site of the succeeding neuron. The neurotransmitters from the synapse binds to the receptor site of the receiving neuron. binding of the neurotransmitter to the receptor causes excitation of the receiving neuron, which also known as postsynaptic neuron.

Hence, Like a key in a lock, the shape of the neurotransmitter must bind with the receptors of the receiving neuron.

5 0
3 years ago
John and Joshua used a light microscope to observe a plant cell. They indicated the magnification as x1000. Given the eye piece
Zinaida [17]

Answer:

Objective Lens Magnification = ×100

Explanation:

In a microscope, the ocular (eyepiece) lenses are usually to a magnification of ×10, meaning that it magnifies the image 10 times. While the standard objective lenses have magnifications of ×4, ×10, ×40, and ×100.

In order to work out the total magnification, the individual magnifications of the ocular and objective lenses have to be known, after which a simple multiplication of both magnifications will give the total magnification used.

Total Magnification = (eyepiece lens magnification) × (objective lens magnification)

1000 = 10 × obejcetive lens magnification

Dividing both sides by 10

Objective lens magnification = 1000 ÷ 10 = 10

∴ Objective lens magnification = ×100

7 0
3 years ago
The outermost membrane of a euglenid chloroplast is thought to have been derived from what part of an original host cell that en
Gemiola [76]

The plasma membrane of the enveloped alga cell serves as the source of the apicoplast's second outermost membrane.

<h3>Where did all chloroplasts come from?</h3>

Chloroplasts were first established in eukaryotes through an endosymbiotic relationship with a cyanobacterium; they later spread through the evolution of eukaryotic hosts and the subsequent engulfment of eukaryotic algae by formerly nonphotosynthetic eukaryotes.

<h3>How did eukaryotic cells develop mitochondria and chloroplasts?</h3>

Chloroplasts and mitochondria most likely developed from engulfed bacteria that once existed as autonomous organisms. An aerobic bacterium was eventually swallowed by a eukaryotic cell, which later established an endosymbiotic bond with the host eukaryote and gradually transformed into a mitochondrion.

To know more about cell visit:-

brainly.com/question/3142913

#SPJ4

5 0
1 year ago
) a $1,000 fine, and/or _____ in jail may be administered to anyone who dumps or abandon an animal off of a road.
Daniel [21]
6 months in jail is the answer


4 0
3 years ago
Read 2 more answers
Regarding cellular phones, the __________ is a code used to reset a forgotten pin.
tekilochka [14]

Regarding cellular phones, the <u>electronic serial number (ESN)</u> is a code used to reset a forgotten pin.

  • An electronic serial number (ESN) is the distinctive identification number that the manufacturer embeds or inscribes on the wireless phone's microchip.
  • The ESN is automatically sent to the base station each time a call is placed so that the mobile switching office of the wireless carrier can verify the legitimacy of the call. In the field, the ESN cannot be easily changed.
  • The mobile identification number (MIN), which is used by wireless carriers to identify phones on their network, is different from the ESN.
  • To aid in preventing fraud, MINs and ESNs can be electronically checked.

learn more about electronic serial number (ESN) here: brainly.com/question/14917805

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3 0
2 years ago
Read 2 more answers
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