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sp2606 [1]
3 years ago
12

What is the definition of chemical reaction

Biology
2 answers:
anzhelika [568]3 years ago
7 0

Answer:

a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.

Explanation:

kipiarov [429]3 years ago
3 0
A process that involves rearrangement of the molecular or ionic structure of substance.
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I️ need some help in question #54 Im pretty sure it’s either b or c
andreyandreev [35.5K]
Hey there :)

Energy is released when a phosphate group is removed from ATP

Your answer will be option B
3 0
3 years ago
Different cell types can react differently to epinephrine in the human body. Choose two cell types in the human body and briefly
Ipatiy [6.2K]

Answer:

I haven't really learned about cell types but I did find this information

Explanation:

How can epinephrine have different effects on different cells? Different cells have different receptors that bind epinephrine. Different cells activate different enzymes as a result of epinephrine binding.

epinephrine induces increased vascular smooth muscle contraction, pupillary dilator muscle contraction, and intestinal sphincter muscle contraction. Other significant effects include increased heart rate, myocardial contractility, and renin release

Hope it at least helps a little :)

3 0
3 years ago
What creates a positive charge inside the cell during a nerve impulse?
sergejj [24]

Answer:

a gated sodium channels open and sodium ions flood into the cell

8 0
3 years ago
Why are carbon dioxide concentrations expected to increase?
garri49 [273]

Answer:

The correct answer is d all of the above

Explanation:

There are many reasons behind increasing the concentration of atmospheric carbon dioxide such as

1 Burning of fossil fuels such as coal,petroleum increases the level of atmospheric carbon dioxide.

2 Increase in Argiculture also increases the level of green house gases such as CO2.

3 Clearing of lands for increasing population and agriculture by cutting down trees also adversely effect the normal 02:CO2 ratio in the atmosphere.

6 0
3 years ago
What is the very first thing an analyst reaches for when they find a tool mark?
lys-0071 [83]

Answer: C. Their camera

Toolmarks are the impressions left by an object or tool on it's contact surface.   Toolmarks are searched and collected in a crime scene to relate a link with the tool which has created them. In crime scene investigation, toolmarks found in the scene of crime should be photographed by the analyst in close range, mid range and overview range shots in order to record it's original location, shape, size and number if multiple tool marks are present.


7 0
3 years ago
Read 2 more answers
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