FREE STANDARDIZED TESTS AND STUDY GAMES ABOUT

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FREE STANDARDIZED TESTS AND STUDY GAMES ABOUT

LIFE AND PHYSICS ATI

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -199 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: 1. ___ matter has definite volume and shape. has a specific amount of matter and takes up a specific amount of space.

• ___ matter has definite volume but no definite shape, meaning that it will conform to the

shape of the container.

• __ has no definite volume or shape. they are highly compressible and subject to

changes in volume.

Answer:

• solid

• liquid

• gases

Question 2: 1. ____ fatty acids and their derivatives that are insoluble in water

• ___ are sometimes grouped among the macromolecules, but lipids are not ___. This is

because they are not built from monomers joined together via dehydration reactions.

• ___ are a diverse set of molecules that are grouped together because of how they interact

with water.

Answer:

• lipids

• lipids, polymers

• lipids

Question 3: 1. ___ and ____ are key processes for the transport of molecules through substrates and across membranes.

• water is a ____, meaning substances ____ dissolve in it.
• water moves from regions where solvent concentration is ___ to areas where solvent

concentration is ___

Answer:

• diffusion and osmosis

• solvent, solutes

• high to low

Question 4: 1. ___ a specialized part of a cell that as a specific function

• the DNA encodes for all the proteins necessary for the cell and in turn the organism to carry

out life functions. this is why the ___ is often referred to as the control center, or brain, of the cell.

Answer:

• organelle

• nucleus

Question 5: 1. The numbers of neutrons in different atoms of the same element can vary, and these atoms are called

• number of ___ gives the atomic number of an atom

Answer:

• isotopes

• protons

Question 6: 1. DNA contains ___ sugar

• RNA contains __ sugar

Answer:

• deoxyribose

• ribose

Question 7: 1. ___ The building block of DNA and RNA.

• ___ the core of an atom

Answer:

• nucleotide

• nucleus

Question 8: 1. ____ energy bonds in molecules store energy for later use

• ___ energy is the energy of an object in motion
• ___ energy is being transferred by waves in electric and magnetic fields.

Answer:

• potential

• kinetic

• radiation

Question 9: 1. ____ A negatively charged ion.

• ____ The most basic complete unit of an element.
• ____ A positively charged ion.
• _____ A negatively charged atomic particle.

Answer:

• anion

• atom

• cation

• electron

Question 10: the two nucleic acids are

Answer:

deoxyribonucleic acid (DNA) and ribonucleic acid (RNA)

Question 11: fat molecules consists of a ____ backbone and 3 ___

Answer:

glycerol, fatty acid chains

Question 12: ____ A phosphorus atom bound to four oxygen atoms.

Answer:

phosphate group

Question 13: 1. DNA has four nitrogenous bases which are

• RNA contains four nitrogenous bases which are

Answer:

• adenine, guanine, cytosine, or thymine

• adenine, guanine, cytosine, or uracil

Question 14: 1. the functions of carbohydrates are

• the monomer example for carbohydrates are?
• the food example for carbohydrates are

Answer:

• structure: cellulose, chitin, storage: glycogen and amylose structure, recognition: glycoproteins,

glycolipids

• monosaccharides

• bread, potatoes