Chek Yo Delf Ultimate Study Guide

The first step in the Scientific Method is to __________.

Observe: Notice details and collect information about natural phenomena.

A hypothesis must be __________ and __________.

specific and measurable

The __________ variable is the factor intentionally manipulated by the researcher in an experiment.

Independent

In an experiment, the __________ group receives the experimental treatment.

Experimental

The number of protons in an atom’s nucleus is referred to as its __________.

Atomic Number

In a neutral atom, the number of protons is equal to the number of __________.

Electrons

The formula to calculate neutrons is __________.

Neutrons = Mass Number - Atomic Number

An ionic bond is formed between a metal and a __________ through the transfer of electrons.

nonmetal

Covalent bonds are formed when atoms __________ pairs of valence electrons.

share

The primary structural difference between DNA and RNA is the type of sugar they contain; DNA has __________ and RNA has __________.

deoxyribose; ribose

Maltose is formed by joining __________ and __________.

Glucose; Glucose

The reaction that joins monomers into polymers by removing a water molecule is called __________.

Dehydration Synthesis

Humans cannot digest cellulose because they lack enzymes to break it down; cows can digest it due to __________ that produce cellulose-cleaving enzymes.

symbiotic gut bacteria

Average atomic mass is often a decimal because it reflects the __________ of all naturally occurring isotopes of an element.

weighted average

Plants that receive __________ hours of light per day produce the greatest number of leaves.

12

In water, the bond holding hydrogen and oxygen together within the molecule is a __________ bond, while the attraction between water molecules is a __________ bond.

polar covalent; hydrogen