Biology 1

Which of the following is (are) true about enzymes? Choose all that apply

• enzymes are substrate specific

• enzyme function may be destroyed if it is denatured

• enzymes are used up in the reactions they catalyze

• enzymes lower the activation energy of a reaction

Which of the following is caused by water's high specific heat?

• a lake heats up more slowly than the air around it

• ice floats on water

• sugar dissolves in hot tea faster than in iced tea

• oil and water do not mix well

Tags

NGSS.HS-PS3-4

Which series of terms is in the correct sequence of biological organization, from the simplest to the most complex?

• molecule, tissue, cell, organelle, organ

• organism, ecosystem, community, population, biosphere

• community, population, ecosystem, habitat, biosphere

• cell, tissue, organ, population, community

• tissue, organ system, organ, cell, organism

Tags

NGSS.HS-LS1-2

All of the different microbial (i.e., bacteria, fungi, and protist) species living on the table in front of you make up which level of biological organization?

• a population

• a biosphere

• a community

• an ecosystem

Tags

NGSS.HS-LS2-2

What are the four most common elements found in living organisms?

• hydrogen, carbon, nitrogen, sulfur

• nitrogen, oxygen, hydrogen, carbon

• hydrogen, helium, carbon, oxygen

• oxygen, nitrogen, hydrogen, sulfur

What type of reaction is shown in the figure?

• hydrolysis reaction

• condensation reaction

• acid-base reaction

What is the name of the bond formed by the reaction?

• hydrogen bond

• phosphodiester linkage

• peptide bond

• ionic bond

Tags

NGSS.HS-LS1-6

What type of molecule is produced?

• a polynucleotide

• a nucleotide

• an amino acid

• a polypeptide

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-6

Based on your understanding of water's polarity, the solute molecule depicted below (and surrounded by water molecules) is most likely _____

• negatively charged

• positively charged

• without charge

• nonpolar

Tags

NGSS.HS-PS1-3

Which of the amino acids below could form a hydrogen bond between their R-groups?

• serine and alanine

• alanine and valine

• serine and valine

• none of the above