A substance that releases hydrogen ions in water is a base. True or false?

Answers

Answer 1

Answer:

Answer: FALSE

Explanation:

An acid is a substance which donates H⁺ (hydrogen) ions when are added to water or any other solution. The amount of H⁺ions liberates per acid molecule defines the acidity of the acid like weak or strong. The base is a substance which donates OH⁻ ions (hydroxide ions ) in the solution or water.

Answer 2

Answer: No it is false. Because any substance is base what include OH. If it releases H ion, it should be acid.

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Which of the following processes releases energy to be used by a cell?A phosphate group is added to ATP to form ADP.
B phosphate group is removed from ADP to form ATP.
c phosphate group is added to ADP to form ATP.
D phosphate group is removed from ATP to form ADP.

Answers

D. a phosphate group is removed from ATP to form ADP.

Answer:

the answer is D: A phosphate group is removed from ATP to form ADP.

Explanation:

I got it right on the exam

1. The greek philosopher Democritus coined what word for a tiny piece of matter that cannot be divided?A. Element
B. Atom
C. Electron
D. Molecule

2. According to John daltons Observations, when elements combine in a compound,
A. the ratio of their Masses is always the same.
B. each element contributes an equal number of atoms
C. their volumes are always equal.
D. their masses are always equal

Answers

For your first question, the correct answer is B. Atom.
And for the second question, the correct answer is A.

How might a change of one amino acid at a site, distant from the active site of an enzyme, alter the substrate specificity of an enzyme?

Answers

Answer:

An enzyme is a protein. Any change in the primary structure of a protein (the primary structure is the aminoacid sequence) can induce a change in the secondary, as well as tertiary structure (tridimensional conformation). This change in the shape of the enzyme can affect its activity, since it can change the active site consequently to this conformational change.

Explanation:

What is the production of new plants without seeds?

Answers

this is called vegetative or asexual reproduction

Which type of microscope allows you to look at 3D objects? *compound
stereoscope
magnifying
simple

Answers

Answer:

Stereoscope

Explanation:

Stereo Microscopes enable 3D viewing of specimens visible to the naked eye.

Explain the energy transformation that occurs when a person exercises.

Answers

AnswerYou could use the better version of the internet

Explanation:

Answer:

Electrical energy is defined as the energy flowing through a device due to the flow of electrons or charges from one point to another.

The energy present within an object or material due to the sum of its motion and potential energy is known as mechanical energy.

Thermal energy is defined as the energy present within an object because of the motion of its particles.

So, when we plug in and turn on a hair dryer then electrical energy starts to flow. As a result, some of its molecules will gain kinetic energy and some will have potential energy.

Hence, its sum will lead to formation of a mechanical energy. Since, this mechanical energy gets converted into thermal energy due to which hairs get dry.

Thus, we can conclude that the energy transformation that occurs when a hair dryer is plugged in and turned on is that electrical energy transforms into mechanical and thermal energy.

Explanation:

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Detergents are compounds that dissolve lipids. If a cell were exposed to large concentrations of detergents, which cell part would likely suffer the greatest?

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Many plants have a waxy cuticle to prevent them from losing water. This is made ofA. lipids.B. nucleic acids.C. starches.D. protein.

What is phosphorylation ?