BIO 201 BIOCHEMISTRY EXAM QUESTIONS AND ACCUARATE ANSWERS
2024/2025 | VERIFIED
Matter - anything that has mass and occupies space.
States of matter; solid, liquid, and gas
energy - the capacity to do work or put matter into motion.
Energy does not have mass, nor does it take up space
Two forms of Energy: Potential ( stored (inactive energy) and Kinetic ( energy in action)
Energy can be transformed from potential to kinetic
Forms of energy - Chemical
Electrical
Mechanical
Radiant or electromagnetic
Elements - All matter is composed of elements.
Elements are substances that cannot be broken down into simpler substances
CARBON, OXYGEN, HYDROGEN, AND NITROGEN MAKE UP 96% OF THE BODY
- Pure substances comprised of only one type of stoms
- Builiding blocks of biological
Atoms - All elements are made up of atoms
-smallest particles of an element with properties of that element
- Atoms are composed of subatomic particles
- Protons=+ charge
- Neutrons= no charge
- Electrons= - charge
, ~ contains Nucleus and electron shell
Atomic # and Mass # - Atomic # = the number of protons
Mass # = the number of prptons plus the number of neutrons in one atom
Isotopes - have the same atomic number but different mass numbers.
same element with same # of protons and electrons but differ in neutrons
Electron shells - inner shells are filled first
- Octect rule: 8 electrons to fill the shell, except 1st ( requires 2)
if shell is filled its INERT ( harmless)
If not then it will react
Ions - Cations: Positively charged ions
Anions: Negatively charged ions
Molecules - Particles formed when two or more elements combine through bonding
Compound - Is a molecule that is formed if atoms of two more Different elements combine
through covalent ( very strong) bonding
Types of Bonds - Chemical Bonds:
- Ionic Bonds
- Covalent Bonds
- Polar
- non Polar
- Hydrogen bonds
2024/2025 | VERIFIED
Matter - anything that has mass and occupies space.
States of matter; solid, liquid, and gas
energy - the capacity to do work or put matter into motion.
Energy does not have mass, nor does it take up space
Two forms of Energy: Potential ( stored (inactive energy) and Kinetic ( energy in action)
Energy can be transformed from potential to kinetic
Forms of energy - Chemical
Electrical
Mechanical
Radiant or electromagnetic
Elements - All matter is composed of elements.
Elements are substances that cannot be broken down into simpler substances
CARBON, OXYGEN, HYDROGEN, AND NITROGEN MAKE UP 96% OF THE BODY
- Pure substances comprised of only one type of stoms
- Builiding blocks of biological
Atoms - All elements are made up of atoms
-smallest particles of an element with properties of that element
- Atoms are composed of subatomic particles
- Protons=+ charge
- Neutrons= no charge
- Electrons= - charge
, ~ contains Nucleus and electron shell
Atomic # and Mass # - Atomic # = the number of protons
Mass # = the number of prptons plus the number of neutrons in one atom
Isotopes - have the same atomic number but different mass numbers.
same element with same # of protons and electrons but differ in neutrons
Electron shells - inner shells are filled first
- Octect rule: 8 electrons to fill the shell, except 1st ( requires 2)
if shell is filled its INERT ( harmless)
If not then it will react
Ions - Cations: Positively charged ions
Anions: Negatively charged ions
Molecules - Particles formed when two or more elements combine through bonding
Compound - Is a molecule that is formed if atoms of two more Different elements combine
through covalent ( very strong) bonding
Types of Bonds - Chemical Bonds:
- Ionic Bonds
- Covalent Bonds
- Polar
- non Polar
- Hydrogen bonds
