PLZ HELP ME 1. The positively charged particle in an atom is the

a. neutron. c. proton.

b. ion. d. electron.

2. Two or more different atoms are combined in

definite proportions in any

a. symbol. c. element.

b. isotope. d. compound.

3. A covalent bond is formed by the

a. transfer of electrons. c. gaining of electrons.

b. sharing of electrons. d. losing of electrons.

4. When you shake sugar and sand together in a test

tube, you cause them to form a

a. compound. c. solution.

b. mixture. d. suspension.

5. A compound that produces hydrogen ions in

solution is a(an)

a. salt. c. base.

b. acid. d. polymer.

6. In polymerization, complex molecules are formed

by the joining together of

a. macromolecules. c. polymers.

b. carbohydrates. d. monomers.

8. Proteins are polymers formed from

a. lipids.

b. carbohydrates.

c. amino acids.

d. nucleic acids.

9. An enzyme speeds up a reaction by

a. lowering the activation energy.

b. raising the activation energy.

c. releasing energy.

d. absorbing energy.

10. In a chemical reaction, a reactant binds to an

enzyme at a region known as the

a. catalyst.

b. product.

c. substrate.

d. active site.

they kick it to the curb.

explanation:

that current was nasty.

the atomic number of magnesium is 12. its nucleus must contain 12 protons and no electrons. the atomic number of an atom is determined by the number of protons.

magnesium is an electrolyte injection commonly used to treat low magnesium levels in your blood. it is also used to prevent or control seizures in women with preeclampsia or eclampsia.

ans.

in united states (us), the first leading cause of death for both women and men is heart diseases that leads to more than half of the deaths. heart diseases develop due to narrow arteries, buildup of plaque in blood capillaries that arises difficulties in blood flow.

the second leading cause of deaths in us is cancer that affects individuals of all ages. it develops due to uncontrolled growth and spread of tumor cells, which results in death if the not controlled or treated.

the third leading cause of deaths in us is copd or chronic obstructive pulmonary disease. it includes difficulty in breathing, chest infections, and persistent cough. smocking is a leading cause of copd and around 80% of copd deaths occur due to smoking.

thus, the correct answer is 'option). cancer, copd, and heart disease.'

the answer for plato is a