An Atom Carries No Charge Because It Has as Many

Q39: A pure substance that cannot be broken

Q40: There are how many different types of

Q41: A solution with a pH of 7.4

Q42: Which protein binds and releases oxygen molecules?<br>A)collagen<br>B)insulin<br>C)keratin<br>D)hemoglobin<br>E)enzymes

Q43: Answer the questions by matching the statement

Q45: If a chlorine atoms has 7 electrons

Q46: Which nucleotide contains the sugar ribose?<br>A)DNA<br>B)ATP<br>C)RNA<br>D)cAMP<br>E)UBP

Q47: A system that compensates for pH fluctuations

Q48: How do hydrophilic molecules interact with water?<br>A)They

Q49: Which statement is true of water?<br>A)Water molecules