Jensine Cabo (BIOL2401-04P) Pre

Q. 

Organic compounds are broken down by a process called _______that involves bonds breaking, while they are synthesized by a process called _______ that involves bonds forming.

• Hydrolysis, dehydration synthesis

• dehydration synthesis, abduction

• synthesizing, hydrolisis

• hydrolysis, protein synthesis

On a pH scale, a pH of 7 is ______, a pH of 4 is ______, and a pH of 12 is ______. 

• acidic; basic; acidic

• neutral; acidic; basic

• acidic; acidic; acidic

• neutral; basic; acidic 

Acids are ______, whereas bases are _______.

• proton donors, proton acceptors

• proton donors, electron acceptors

• proton acceptors, electron donors

• proton acceptors, proton donors

 

Which factors increase the rate of chemical reactions? 

• catalysts

• increase temperature 

• increase concentration of the reactant

• decrease temperature

• increase in particle size

Tags

NGSS.HS-PS1-5

 

Reactions that release energy are called ______ reactions, whereas those that absorb energy are called ______ reactions.

• endergonic, exergonic

• endergonic, endergonic

• exergonic, exergonic

• exergonic, endergonic

Tags

NGSS.HS-PS1-4

A decomposition reaction involves bonds breaking and is also called a catabolic reaction, whereas a synthesis reaction involves _______ and is also called a ______ reaction.

• bond formation, catabolic

• bond formation, anabolic

• bond formation, synthesis

• bond breaking, catabolic

Tags

NGSS.HS-PS1-4

NGSS.HS-PS1-5

 

The following are electrons in the electron shells of four atoms. Which atoms would most likely be reactive?

• 2

• 2,7

• 2,8,7

• 2,8,8

• 2,8

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which does not have 6.02 x 1023 (Avogadro’s number) solute particles? 

• one mole of sucrose 

• one mole of sodium chloride (NaCl) 

• one mole of water

• one mole of methane (CH4)

• one mole of glucose

Which statement is FALSE? 

• isotopes differ in the number of neutrons 

• isotopes don’t vary in mass number  

• mass number is the sum of protons and neutrons 

• the half-life of a radioisotope is the time it takes to lose half of its energy 

Tags

NGSS.HS-PS1-8

. 

Which component of a homeostatic control mechanism provides the means to respond? 

• Control center

• Receptor

• Effectors

• All three

Tags

NGSS.HS-LS1-3