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SIZIF [17.4K]
3 years ago
15

true or false a scientist opinion is a valid source of information to use in a scientific investigation?

Biology
1 answer:
dedylja [7]3 years ago
3 0
False because it's an "OPINION" not a FACT.
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A cell is hypotonic to it’s environment. Where will water move through osmosis?
TiliK225 [7]

Answer:   B. Into the cell

Explanation: If a cell is put into a hypertonic solution, water will leave the cell. When a cell is put into a hypotonic solution, water will enter the cell. And a cell in an isotonic solution water moves into and out of cell at the same time.

4 0
3 years ago
If you help me ill give you 100 points
alexdok [17]

Answer:

Dissolved oxygen concentrations are constantly affected by diffusion and aeration, photosynthesis, respiration and decomposition. While water equilibrates toward 100% air saturation, dissolved oxygen levels will also fluctuate with temperature, salinity and pressure changes ³.

Relationship between oxygen uptake and dissolved oxygen concentration The potential for adverse effects of low DO concentrations on fish can be defined ...

Explanation:

7 0
2 years ago
Contractions of the heart generate blood pressure, which is responsible for moving blood through the blood vessels.
malfutka [58]

The contractions of the heart is what creates out blood to pulse through out body and is the basis of our blood pressure; which means this statement is TRUE.


The systolic number (top) of the blood pressure is our heart physically pushing the blood out of the heart and to the rest of the body.

The diastolic number (bottom) of the blood pressure our heart at rest when it has just finished with one pump.

8 0
3 years ago
Read 2 more answers
Describe one way osmosis and osmotic pressure is important to medicine.
OleMash [197]

Answer:

Since the beginning of life of the first multicellular organisms, the preservation of a physiologic milieu for every cell in the organism has been a critical requirement. A particular range of osmolality of the body fluids is essential for the maintenance of cell volume. In humans the stability of electrolyte concentrations and their resulting osmolality in the body fluids is the consequence of complex interactions between cell membrane functions, hormonal control, thirst, and controlled kidney excretion of fluid and solutes. Knowledge of these mechanisms, of the biochemical principles of osmolality, and of the relevant situations occurring in disease is of importance to every physician. This comprehensive review summarizes the major facts on osmolality, its relation to electrolytes and other solutes, and its relevance in physiology and in disease states with a focus on dialysis-related considerations.

3 0
2 years ago
Determine which of the following measurements is largest: 1800 centimeters, 2.1 meters, 0.0017 kilometers
fiasKO [112]

Answer: 1800 centimeters is the largest measurement

Explanation:

1800 cm = 0.018 km

2.1 m = 0.0021 km

0.0017 km is the smallest

8 0
3 years ago
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