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zaharov [31]
3 years ago
11

What vocabulary term is used when looking at the ratio for the outward physical appearance of an organism?

Biology
2 answers:
DedPeter [7]3 years ago
5 0

Answer:

phänotypus,

Explanation:

dexar [7]3 years ago
4 0

Answer:

The noun phenotype entered the lexicon around 1910, adapted from the German word phänotypus, based on the Greek phaino, which means "shining," or “appearance.” The phenotype can include not only the physical appearance of the organism, but also its behavior — for example, the migration of geese

Explanation:

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Answer:

D. None of the above

Explanation:

<u>Reason that Drastic Change in weather may cause mass extinction</u>

Weather plays an important role in the survivability & the growth/diminish of the population. For example, animals that need large amounts/bodies of water (for example fishes), will not survive when the area is hit with a heat wave & drought, which would cause fishes to surface, and die.

<u>Reason that Geological change would play a large role in mass extinctions</u>

While the Geography is constantly changing, large abrupt changes would cause a upheaval and may upset the population, leading to a depletion of resources or even a sudden destruction of part/all of the population. For example, an earthquake may kill large amounts of animals, and the destruction of the greenery in the area may severely limit the amount of food/decrease the primary consumer's populations, leading to a starvation.

~

8 0
3 years ago
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Give two reasonsthat may account for the continuous firing of a<br> PostsynapticNeuron.
lyudmila [28]

Answer:

1.Continuous diffusion of negatively charged ions into the postsynaptic neurons , <u>which  leads to continuous reversal of charges (hyperpolarization) and therefore continuous firing of action potential</u>

2. Inhibition of hydrolytic enzymes e.g (acetycholinesterase)   that  metabolize activities of  cholinergic   neurotransmitters  e,g acetycholine at post synaptic cleft. leading to firing of action potential.

Explanation:

Neuron whose dendrites  transmits action potential to the  neuromuscular junction is called presynaptic neuron. While  neuron that  transmit action potential away from the neuronal synaptic junction, or from the neuromuscular  junction to the cell body of adjacent neuron or to effectors (gland and muscles) are called  post synaptic  neuron.

The more  negatively charged ions that diffused into the post synsptic neuron, the more depolarization, and the greater the frequency of action potential produced

The inhibition of  activities of hydrolytic enzyme which metabolize cholinergic neurotransmitter leads to  continuous   excitatory activities  of cholinergic neurotransmitters   on  the receptors at the postsynaptic neuron, and the more  action potential

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