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AC-HPAT Chemistry Questions With Complete Solutions

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AC-HPAT Chemistry Questions With Complete Solutions double-displacement reaction A double displacement reaction, also known as a double replacement reaction or metathesis, is a type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products Precipitate precipitate is an insoluble solid that emerges from a liquid solution. The emergence of the insoluble solid from solution is called precipitation. Often the precipitate emerges as a suspension. Precipitates can form when two soluble salts react in solution to form one or more insoluble products. Energy Levels Energy levels (also called electron shells) are fixed distances from the nucleus of an atom where electrons may be found. As you go farther from the nucleus, electrons at higher energy levels have more energy. Electrons in the outermost energy level of an atom are called valence electrons Marquis Test The Marquis Test is commonly used for Ecstasy testing as MDMA turns the precipitate purple black. Cobalt thiocyanate is used to test for cocaine. The Cobalt is mixed with the questionable substance, then drowned in hydrochloric acid, doused in chloroform, and shaken. What is the relation between an atomic number and a mass number? Atomic number is actually the number of protons in an atom while mass number is the number of nucleons i. e, number of protons plus the number of neutrons. Isotopes Isotopes refer to the nuclides of a certain element that have different numbers of neutrons, or in other words, atomic nuclei that have the same number of protons but different numbers of neutrons. A radioisotope is an isotope that is unstable and therefore undergoes radioactive decay or will at some point. Chemical Synthesis Chemical synthesis, the construction of complex chemical compounds from simpler ones. It is the process by which many substances important to daily life are obtained. It is applied to all types of chemical compounds, but most syntheses are of organic molecules. Decomposition A decomposition reaction is a type of chemical reaction in which a single compound breaks down into two or more elements or new compounds. These reactions often involve an energy source such as heat, light, or electricity that breaks apart the bonds of compounds single-displacement reaction A single-displacement reaction, also known as a single-replacement reaction, is a type of chemical reaction where an element reacts with a compound and takes the place of another element in that compound. This type of reaction is typically pictured like this: Here, A replaces B in the compound BC

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AC-HPAT Prep (Biology, Chemistry, Physics,
Math) 188 Questions With Complete
Solutions.
Most of the cell membrane's specific functions are controlled by:
Proteins


Alcoholic Fermentation is a form of:
Anaerobic Respiration


Phagocytosis is a form of:
Endocytosis


What is a pyruvate?
Pyruvate is an important chemical compound in biochemistry. It is the output of the metabolism of
glucose known as glycolysis. One molecule of glucose breaks down into two molecules of pyruvate,
which are then used to provide further energy, in one of two ways.


What are the small spherical bodies within a cell where proteins are assembled according to genetic
instructions?
Ribosomes


What is the structural and functional unit of life?
The cell


What is a prokaryotic cell?
A cell that lacks a true nucleus and membrane-bound organelles


What is a eukaryotic cell?
A cell that contains a nucleus and membrane-bound organelles


What is cellular respiration?
A catabolic pathway for the production of ATP, in which sometimes oxygen is consumed as a reactant
along with an organic fuel. At times, the process proceeds without oxygen, but this is less efficient.


What is anaerobic respiration?
A form of cellular respiration that does not involve oxygen.


What is aerobic respiration?
Form of cellular respiration which requires oxygen to generate energy.


Name the four types of transport that allow small molecules to move across the cell membrane:
Diffusion, Osmosis, Active Transport, and Passive Transport.

, Prokaryotes often reproduce by:
Binary Fission


What is binary fission?
A form of asexual reproduction in which the parent divides into two identical halves.


What is cytokinesis?
The division of cytoplasm into two identical daughter cells, which occurs during the telophase stage of
mitosis.


What is a haploid cell?
A cell that contains one set of chromosomes


What is a diploid cell?
A cell that contains two sets of chromosomes


What is chromatin?
The substance of which eukaryotic chromosomes are composed, consisting of mostly proteins, DNA,
and RNA.


What is a centriole?
a cylindrical organelle near the nucleus in animal cells, occurring in pairs and involved in the
development of spindle fibers in cell division.


What is a chromosome?
A structure carrying genes is a linear sequence, found in the nucleus, consisting of DNA and protein.


What is DNA?
A double-stranded, helical nucleic acid molecule capable of replicating and determining the inherited
structure of a cell's proteins. It makes up the genetic material of most living organisms and plays a
role in determining heredity.


What is RNA?
A single-stranded nucleic acid molecule involved in protein synthesis. It is responsible for carrying the
genetic code transcribed for DNA to specialized sites within the cell where the information is
translated into protein composition.


What is a nucleotide?
A nucleotide is the basic building block of nucleic acids. RNA and DNA are polymers made of long
chains of nucleotides. A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose
in DNA) attached to a phosphate group and a nitrogen-containing base.


What is transcription?
Transcription is the process by which the information in a strand of DNA is copied into a new molecule
of messenger RNA (mRNA). ... This complex initiates transcription, and the RNA polymerase begins
mRNA synthesis by matching complementary bases to the original DNA strand.

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