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Viefleur [7K]
4 years ago
10

Why is caffeine good heart rate for study for daphnia

Biology
2 answers:
Sunny_sXe [5.5K]4 years ago
8 0

Answer:

Dopamine, like caffeine, increases the heart rate of Daphnia in a dose-dependent manner. Dopamine's effects on Daphnia's heart has not been reported previously. ... Caffeine showed a similar effect on Daphnia's heart rate at a 10-times lower concentration than dopamine (28.5% increase at 0.08 mg/ml, Figure 2).

Explanation:

Alborosie4 years ago
4 0
Dopamine, like caffeine, increases the heart rate of Daphnia in a dose-dependent manner. Dopamine's effects on Daphnia's heart has not been reported previously. Caffeine showed a similar effect on Daphnia's heart rate at a 10-times lower concentration than dopamine.
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When an individual has a healthy cardiovascular system, what is blood pressure and blood volume dependent upon?
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D

Explanation:

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3 years ago
The ________ west coast climate is situated on the western (windward) side of continents from about 40 to 65 degrees latitude.
Fofino [41]

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marine

Explanation:

5 0
2 years ago
The hay included as part of the culture medium provided a food source for bacteria. Bacteria are a good food source for some typ
lions [1.4K]

Answer:

  • Protozoans → would not have survived because they have no way to produce their own food → Heterotrophs
  • Algae → would have survived without this food source → Heterotrophs

Explanation:

The protist kingdom is composed of two main groups.  The principal difference between them is that algae can produce their own food, while protozoans need to ingest other organisms or organic molecules to survive.

  • Algaes are autotroph
  • Protozoans are heterotroph

<u>Protozoans</u>:

Microscopic unicellular organisms, eukaryotic and heterotrophs -predators or detritivores-. Most of them are aquatic free-living organisms, but some species are parasites. They feed on<u> bacteria</u>, other organic wastes, and other microscopic organisms. The phagocytosis process is normally used to ingest the food, invaginating their cell membrane.  

<u>Algae</u>:

Eukaryotic micro- or macroscopic organisms. Autotroph and photosynthetic. They might be either unicellular or pluricellular. They use sunlight to synthesize organic matter from water, CO₂, and mineral salts. Unicellular ones can be free-living or associate with others to form colonies. They are part of the phytoplankton and are ingested by heterotrophic organisms. Pluricellular algae do not create real tissues but they compose a tale. The depth at which they inhabit depends on the pigments they produce. All of them inhabit fresh or sea waters.

8 0
3 years ago
the presence of which atmospheric condition will most likely result in clear skies in Binghamton, New York
Kaylis [27]

Answer:

High-Pressure Center

Explanation:

To get this answer, this question and answer is based on the <em>Coriolis effect</em>. The <em>Coriolis effect</em> causes the air to rotate in a clockwise direction. When it turns clockwise direction, it will always be high pressure.

6 0
2 years ago
God PLEASE help. What does surface area-to-volume ratio, diffusion rate, and time for substances have anything to do with reachi
sasho [114]

Answer:

Surface area to volume ratio, in simple means the size of surface area to the volume of substance that can pass through it at a particular time.

Amoeba and some bacterias are flat and have large surface area to volume ratio. So the diffusion rate is very high due to large surface area.

Where as humans have small surface area: volume so diffusion is very slow or does not take place at all.

Explanation:

As the ratio gets smaller, it takes longer for items to diffuse.

Explanation:

When the cell increases in size, the volume increases faster than the surface area, because volume is cubed where surface area is squared.

When there is more volume and less surface area, diffusion takes longer and is less effective. This is because there is a greater area that needs to receive the substance being diffused, but less area for that substance to actually enter the cell.

this is actually why cells divide. When they become too large and it takes too long for them to transport materials across the cell, they lose efficiency and divide in half to raise the surface area to volume ratio.

I HOPE TGIS HELPS PKEASE MARK ME AS BRAINLIEST

4 0
3 years ago
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