CHEMISTRY HIGH SCHOOL

Which one of the following chemicals does the body generate during regular exercise? A. Adrenaline
B. Estrogen
C. Endorphins
D. Sodium chloride

Answers

Answer 1
Answer: The answer is actually C. endorphins. during regular exercise, the pituitary gland and central nervous system produce endorphins

Related Questions

The rate constant (k) for the decay of the radioactive isotope I-131 is 3.6 x 10-3 hours 1. The slope of which of the following graphs is correct for the decay and could be used to confirm the value of k?
Energy transfer by convection is primarily restricted toA. gases. B. liquids. C. solids. D. fluids. E. none of the above
What is the most abundant gas in Earth's present day atmosphere?methane oxygen carbon dioxide nitrogen
How can compact fluorescent bulbs help the environment? (2 points) They will create new industry. The will use less energy overall. They will further science and technological development. They will provide society with a product that is in short supply.
A mixture of sand and table salt can be separated by filtration because the substances in the mixture differ in( I) boiling point (2) density at STP(3) freezing point (4) solubility in water

Which of these statements about enzymes is NOT true? - If enough substrate is added, the normal Vmax of a reaction can be attained even in the presence of a competitive inhibitor.
- When [S] << Km, the reaction is second order and V0 depends on [S] and [Et].
- Their kcat is a second order rate constant.
- The lower their Km, the better they recognize their substrate, but the lower their reaction rate.
- When [S] << Km, V0 depends on [S] and [Et].

Answers

Answer:

1. True. 2. True. 3. Not true. 4. True. 5. True

Explanation:

1. Yes, because if the amount of substrate i much greater than of competitive inhibitor then the probability of substrate to bind to ferment is much higher than of inhibitor (if we have noncompetitive inhibitor it damages the structure of active site and the substrate concentration does not have a role in reaction rate).

2. Yeah, because then the michaelis-menten equation will transform into [tex} V0=(kcat*[E]*[S])/Km [/tex] and it is a second order equation.

3. No, because it is measured in sec-1 and that means it is 1 rate constant.

4. True, if the lower Km the better is binding and due to that rate is slower because it's harder for substrate to unbind.

5. The same as question two.

Is rubber band stretching physical or chemical

Answers

Answer:

\boxed {\boxed {\sf Physical \ change}}

Explanation:

A chemical change, as the name suggests, must result from a change in the chemical makeup and new substances are produced. A very common example is metal rusting.

A physical change can be observed without a change in chemical composition. No new substances are produces. Ripping paper and an ice cube melting are physical changes.

A rubber band stretching is a physical change. No new substances are made and the chemical makeup remains the same.

Answer:

physical

Explanation:

this is a physical action to create a change. does not involve chemicals or elements

How would you describe the particles that make up a liquid? are the shape and volume of liquids definite or indefinite?

Answers

Particles in a liquid move freely and liquids have a definite volume and indefinite shape since it occupies the shape of the container in which the liquid is in.

Your sense of touch is based in your _____.
bones
muscles
skin
tissues

Answers

umm tissues , because it is caused by receptors .

Answer:

Skin

Explanation:

Hope this helps   :)

What joint allows a small amount of movement?

Answers

Cartilaginous joints allow for a small amount of movement.
These joints are made of cartilage, which is a flexible connective tissue. Cartilage is less rigid than bone, but doesn't have as much flexibility as muscle.

A chemist mixes two liquids together. The reaction produces a gas and a solid. According to the law of conservation of mass, what should the chemist observe when she compares the total masses of the substances before and after the reaction? A.The masses are equal. B.The masses are inconsistent. C.The mass of the substances before the reaction is greater than the mass of the substances after the reaction. D.The mass of the substances before the reaction is less than the mass of the substances after the reaction.

Answers

 A is the answer. Because the masses are equal.
The answer is (A.) The masses are equal. (The law of conservation of mass says that mass cannot be created (added) or destroyed. So the total mass must be the same before and after. Hopefully, this helps)
Other Questions
A chemical manufacturer sells sulfuric acid in bulk at a price of $100 per unit. If the daily production cost in dollars for x units is: C(x)=100,000+50x+0.0025x^2, and if the daily production capacity is at most 7000 units, how many units of sulfuric acid must be manufactured and sold daily to maximize the profit?
Explain why all ores are minerals but all minerals are not ores.
This is the equation for the combustion of propane.C3H8 + 5O2 → 3CO2 + 4H2O + heatWhich are the reactants and the products in this reaction?A.The reactants are C3H8 (propane) and H2O (water). The products are O2 (oxygen) and CO2 (carbon dioxide).B.The reactants are C3H8 (propane) and O2 ( oxygen). The products are CO2 (carbon dioxide) and H2O (water).C.The reactants are CO2 (carbon dioxide) and H2O (water). The products are C3H8 (propane) and O2 ( oxygen).D.The reactants are O2 (oxygen) and CO2 (carbon dioxide). The products are C3H8 (propane) and H2O (water).
Which compound is an example of a binary ionic compound?Question 6 options: H2O H2SO4 MgF2 SF6