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3 years ago

The synaptic effect of cocaine is to __________.

Biology

1 answer:

Sedaia [141]3 years ago

5 0

B. speed up the reuptake of dopamine and norepinephrine

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How long did it take for rattlesnakes to adapt without a rattle?

malfutka [58]

Answer:

They haven't yet, that is a myth. Rattlesnakes still have a rattle and probably always will.

Explanation:

4 0

3 years ago

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Theodor W. Engelmann illuminated a filament of algae with light that passed through a prism, thus exposing different segments of

WARRIOR [948]

Answer:

The correct answer is C and Engelmann conducted this experiment to prove relationship between algae and the rate of photosynthesis.

Explanation: First we must talk about 3 facts:

1) Prism scatters the white light into different wavelengths.

2) Photosynthesis, 6 carbon dioxide and 6 water molecules are consumed and 6 oxygen and 1 sugar molecule is synthesized using light energy.

6CO2 + 6H2O → C6H12O6 + 6O2

3) Aerobic bacteria breaks down sugar while using oxygen and produces water and carbon dioxide in simplified terms.

So with this experimental setup a researcher can understand the rate of the photosynthesis by increased accumulation of aerobic bacteria near algae in certain wavelengths since they uses oxygen and tend to move close to the oxygen source (<u>see figure</u>). In this experiment there are no ways to measure heat (B), there is no known relation between wavelength of light and aerobic respiration since it can happen even in the dark (A) and finally there are no ways to measure carbon dioxide (D).

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3 years ago

Help.................

Karo-lina-s [1.5K]

Answer:

Autotrophs are organisms that use light energy or energy stored in chemical compounds to make their own food.

1st order heterotrophs are organisms that eat only plants

2nd order heterotrophs are organisms that eat herbivores

3rd order heterotrophs: organisms that eat herbivores and other carnivores

Top group: carnivores

Explanation:

Producers are named as such because they produce their own food either by photosynthesis or chemosynthesis. These organisms are called autotrophs and include plants.

There are various levels of consumers. The first is first order heterotrophs, which feed on the producers. These are herbivores and include, for example, a deer feeding on grass.

The next is second order heterotrophs, which feed on the first order heterotrophs. E.g. an owl eating a mouse. These are carnivores

The next layer are also carnivores, third order heterotrophs which eat second order heterotrophs, for example a lion eating a zebra.

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3 years ago

___ moves molecules by going from an area of a low concentration gradient to a high concentration gradient

kumpel [21]

Answer:

That is active transport.

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3 years ago

Refer to the following food chain: A fly eats a piece of fruit; a spider eats the fly; a bird eats the spider. The bird dies, an

uranmaximum [27]

When the bird is decomposed, more energy is transfered since its's bigger than a fly, a spider and the amount of fruit a fly can eat.

Hope it helped,

BioTeacher101

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3 years ago

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