UNLV Biol 189 Exam 1- Regner Questions With Complete Solutions

UNLV Biol 189 Exam 1- Regner Questions With Complete
Solutions

-Energy Shells- # of valence e-

Most inner Shell:
2nd Shell:
3rd Shell: Correct Answers 2

8

8

"The good thing about science is that..." Correct Answers "...it's
true whether or not you believe in it."- Neil Degrasse Tyson

1st cell appeared Correct Answers ~3.5 billion years ago

2 purine bases Correct Answers Adenine & Guanine

3 components of cytoskeletons Correct Answers 1.
Microfilaments

2. Intermediate filaments

3. Microtubules

3 domain tree of life Correct Answers Bacteria, Archea &
Eukarya.

,3 pyrimidine bases Correct Answers Thymine, Cytosine, and
Uracil.

4 regions of the mitochondria Correct Answers 1. Smooth outer
membrane (porous)

2. Intermembrane space

3. Matrix = Fluid filled inside that contains mitoDNA,
ribosomes & enzymes for pyruvate oxidations & citric acid
cycle.

4. Inner membrane with folds (cristae) = Electron transport
chain happens.

5 types of chemical bonds Correct Answers 1. Covalent Bonds

2. Nonpolar Covalent Bonds

3. Polar Covalent Bonds

4. Ionic Bods

5. Hydrogen Bonds

6 major Elements that make up most living organisms Correct
Answers -Carbon

-Hydrogen

-Oxygen

, -Nitogen

-Phosphorous

-Sulfur

acids Correct Answers donate H+ (protons)

all cells share common Correct Answers structures & functions:

-Plasma membrane

-Phospholipid bilayer (barrier)

-Cytosol/Cytoplasm

-Jelly-like fluid that contains proteins & ribosomes

-Chromosomes

-Organizing unit of DNA; DNA & proteins

-Ribosomes

-RNA/Protein structures (required for translation)

all life forms Correct Answers undergo evolution over time

all living things Correct Answers reproduce