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Which of the following statements concerning isotopes is TRUE? A. Isotopes have the same number of protons and neutrons, yet vary in the variety of electrons castle contain. B. Isotopes of an element have the same atomic number, but have various atomic masses. C. The chemical properties of every one of an element"s isotopes are precisely the same. D. The atomic weight of any kind of element is about equal come the mass variety of its many abundant isotope. E. The second, third, and also fourth answers room correct. F. All of the statements room true concerning isotopes.
If neutral atoms come to be positive ions, castle _______. A. Lose protons B. Acquire protons C. Obtain neutrons D. Acquire electrons E. Shed electrons
If the DNA molecule each other a twisted ladder, which chemical units type the sides of the ladder? A. Amino acids and also phosphates B. Alternate deoxyribose sugar and also phosphate groups C. Alternating ribose sugar and also phosphate teams D. Pairs of nitrogenous bases E. Polypeptide chains
Solution A has actually a pH the 4. Equipment B has actually a pH that 13. Recognize the correct statement. A. Solution A is more basic than systems B (Solution A has more hydrogen ions). B. Systems A is more acidic than systems B (Solution B has much more hydrogen ions). C. Solution A is more basic than solution B (Solution B has much more hydrogen ions). D. Systems A is an ext acidic than equipment B (Solution A has more hydrogen ions).
Proteins are comprised of plenty of _______. A. Amino acid molecules B. Monosaccharide molecule C. Triglyceride molecules D. Nucleotide molecules E. Fatty acid molecules
The cell nucleus of one atom is the ar of which type of subatomic particles? A. Electrons and also protons B. Neutrons and protons C. Protons only D. Electrons and also neutrons E. Electrons and molecules
Which that the complying with accurately explains enzymes? A. They are organic catalysts. B. They space consumed throughout chemical reactions. C. They react best at exceptionally high temperatures. D. They space lipoproteins. E. They are major energy resources for the cell.
All of the adhering to are true about the importance of water, an not natural compound, in the body except _______. A. Water offer a protective role in the body B. Come digest foodstuffs or break down biological molecules, water molecule are included to the bond of the larger molecules C. Water is great solvent because it is nonpolar D. Water is an important reactant in some types of chemical reactions E. Water absorbs and releases huge amounts the heat prior to its temperature changes appreciably
Energy the is in activity is _______. A. Energy discovered in a rock poised at the top of a hill B. Referred to as kinetic energyC. Potential power the energy stored in the D. Bonds of chemical substances E. Uncovered in a muscle at rest
Nucleotides, the structure blocks of main point acids, are comprised of _______. A. A nitrogen-containing base, any an easy sugar, and a phosphate group B. A calcium-containing base, a pentose sugar, and a phosphate team C. A nitrogen-containing base and also a phosphate group only D. A nitrogen-containing base, a pentose sugar, and also a phosphate group E. A nitrogen-containing base, a pentose sugar, and also a sulphate group
The atom number identifies the element and also refers to the variety of _______. A. Neutrons and also protons in the cell core B. Atoms C. Proton D. Molecule E. Neutrons
The role of ATP is come _______. A. Password for mRNA B. Act as a hormone C. Enable cells to usage energy directly from simple sugars D. Form DNA E. Provide a type of chemical energy that is usable by every body cells
The just electrons that are vital when considering bonding habits are those in the _______ shell. This covering is called the _______ shell. A. Outermost; valence B. Innermost; valence C. Outermost; binding D. Middle; binding E. Next to last; valence
The term "_______" describes a distinctive substance the cannot be decomposed or damaged down into easier substances. A. Aspect B. Atom symbol C. Regular table D. Link E. Molecule
Chemistry: The central Science14th EditionBruce Edward Bursten, Catherine J. Murphy, H. Eugene Lemay, Matthew E. Stoltzfus, Patrick Woodward, Theodore Brown
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