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ATI TEAS 7 Science Pretest 2024/2025
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Science Teas 7 ATI TEAS 7 Science Pretest 2024/2025
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ATI TEAS 7 Science Pretest 2024/2025A polysaccharide can be described as which of the following?
A.) A carbohydrate that is made of many sugar molecules
B.) A molecule that is made up of many amino acid monomers
C.)A macromolecule that makes up many lipid molecules
D.) A polymer made up of many fatty acids bonded together - ANSWER-A.) A
carbohydrate that is made of many sugar molecules
"Poly" means many, and "saccharide" means sugar.
An atom that has lost an electron becomes _______ in charge and is called a(n)
____________.
A.) positive; anion
B.) negative; cation
C.) negative; anion
D.) positive; cation - ANSWER-D.) positive; cation
An atom without a charge is neutral because it has the same number of electrons in its
orbitals as protons in its nucleus. When an electron is lost from the atom, a positive
proton is not balanced and the atom is called a cation. When an electron is gained by
an atom, the extra negative charge of the electron is not balanced by an extra proton in
the nucleus. A negatively charges atom is called an anion.
Atomic mass has a decimal because it is the average _____ of all the isotopes for a
particular element. The atomic number of an element is the number of ________ in its
nucleus.
A.) number of electrons; protons
B.) mass; protons
C.) mass; neutrons
D.) protons; neutrons - ANSWER-B.) mass; protons
, The mass of all isotopes for an element are average to derive the atomic mass seen in
an element's box in the periodic table. The atomic number is an integer value indicating
the number of protons is one atom of an element.
Contraction occurs within the thin _______ filaments slide past the thicker ______
filaments, causing the sarcomere unit to shorten or contract.
A.) actin; myosin
B.) myosin; axon
C.) axon; actin
D.) dendrite; axon - ANSWER-A.) actin; myosin
Actin and myosin slide past each other, and the sarcomere unit shrinks.
Each element's atomic number is determined by the number of which of the following
types of particles in each atom?
A.) Protons
B.) Electrons
C.) Neutrons
D.) Ions - ANSWER-A.) Protons
The atomic number of an element is its number of protons.
Genetic information describing the characteristics of an organism is found in which of
the following?
A.) Ribosome
B.) Nucleus
C.) Lysosome
D.) Mitochondrion - ANSWER-B.) Nucleus
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