BIOL 130: Chapter 2

The type of stored energy that is not performing any work is ____.

____ are positively charged.

_____ is the storage carbohydrate in animals. (Polysaccharide)

____ are radioactive/unstable isotopes.

_____ are non-polar neutral molecules that don't interact with water.

TRUE or FALSE? Fructose is the sugar used most often by cells for energy.

4 nucleotides that compose DNA (in pairs):

TRUE or FALSE? 90% of plasma in blood is water.

______ store generic information (DNA & RNA).

HDL (High-density Lipoproteins) are...

_____ molecules share electrons equally.

____ measures the radioactive material and put it on a curve to measure its t 1/2.

_____ is the complex carbohydrate in plants. (Polysaccharide)

Mass number is the number of ____ and _____.

Bases have a pH balance _____ 7.

TRUE or FALSE? Water has a high heat evaporation.

_____ is the building block of proteins.

_____ sugars composed of 2 monosaccharides.

____ are uncharged/neutral.

_____ the substance that is dissolved.

There are ____ naturally occurring elements.

_____ have different number of neutrons making them heavier.

TRUE or FALSE? Water molecules are polar.

____ direct most of life's processes.

______-charged ion is formed if an atom or molecule gains electron.

Acids have a pH balance ___ 7.

____ are attractive forces holding atoms together to make them stable.

_____ minimize pH change.

______ is made of cellulose (plant's cell wall) that can't be broken down.

4 nucleotides that compose RNA (in pairs):

Which of the following are unsaturated fats (oil)?

_____ is the currency of the cell.

Enzymes are specialized ______.

_____ molecules share electrons unequally.

The type of energy that is doing work is ____.

TRUE or FALSE? Hydrogen bonds are the weakest of the types of chemical bonds.

TRUE or FALSE? Although you hear about the dangers of cholesterol, a certain amount of cholesterol is good for you.

TRUE or FALSE? he three classes of lipids are triglycerides, phospholipids, and steroids (cholesterol).

____ are negatively charged.

_____ is the bond where atoms give up or take electrons to stabilize.

____ donate their electrons to make free radicals less reactive/stable.

_____ simple sugars in one unit only.

______ is the study of matter and energy.

TRUE or FALSE? Fatty acids are broken down into saturated, unsaturated (transfat), and omega - 3.

About 60% of your body weight consists of _____.

_______ long chains of carbons and hydrogens that do not dissolve in water.

_____ are long chains (polymers) of subunits called amino acids.

Atomic number is the number of ____ and _____.

Triglycerides have...

____ are polar molecules that are attracted to water.

_____ is the time it takes for an isotope to decay.

The ____ is the backbone/building block of living things.

Water is neutral with a pH balance of _____.

______ carries instructions for making proteins.

_____ serves as the biological solvent.

_____ are the basic building blocks of matter.

_____ lists down all known elements.

____ the bond where atoms are shared.

____ is the outermost shell.

_______ bond occurs when a covalently bonded hydrogen is positive and is attracted to a negatively charged atom.

Which fat has kinks? Saturated or unsaturated?

____ dissolves substance.

The first electron shell can hold ____ electrons, and the second shell can hold ____ electrons.

Are you ready for the first exam?

____ sugars composed of long complex chains of monosaccharides.

______ is formed when atoms share a single pair of electrons.

_____ is when water molecules cling to other polar molecules.

LDL (Low-density Lipoproteins) are...

____ is water molecules cling to each other.

TRUE or FALSE? Water CAN'T absorb and hold heat energy.

Which of the following is a steroid?

Which of the has a covalent bond?

All these are Carbohydrates EXCEPT:

____ are the smallest units of an element that retains the element's physical and chemical properties.

_____-charged ion is formed if an atom or molecule loses electron.

____ are unstable molecules caused by some reactions in cells.

_____ carries instruction for making RNA.

Chromatine; ______, chromosome; _____.

Over 90% of the human body is composed of....

Ice is _____ dense than water.