HESI A2 BIOLOGY/BIOLOGY HESI A2 NEWEST EXAM
QUESTIONS AND CORRECT DETAILED A NEW UPDATED
VERSION LATEST 2024-2025(100% CORRECT VERIFIED
ANSWERS) ALREADY GRADED A+
Properties of Water
2 Hydrogen bonds Covalently bonded to Oxygen.
Hydrogen Bonding between molecules.
- High specific heat
- Large bodies or water stabilize climates
- Strong cohesive and adhesive properties
- Water freezes forms a lattice crystal resulting in ice floating in water.
- Polarity of water allows it to act as a universal solvent.
- Water can be used to dissolve different solvents.
Carbohydrates
,ANSWER-Long chains, or polymers of sugar. Most importantly form the backbone
of DNA and RNA.
Saturated
ANSWER-Clogs arteries. NO DOUBLE BONDS in their hydrocarbon tail. SOLID @
room temperature.
Unsaturated
ANSWER-Double bond in their hydrocarbon tail. LIQUID at room temperature.
Phospholipids
ANSWER-Phosphate group (polar) soluble in water. Hydrocarbon tail of fatty acids
is nonpolar and nonsoluble in water.
Ex. Cell Membrane
Steroids
ANSWER-Are lipids, which are precursors to hormones and drugs
Proteins
ANSWER-They are Polymers of 20 molecules called Amino Acids. Enzymes are a
type of protein, which catalyze different reactions or processes. LARGEST
Biological Molecule
Cell
ANSWER-Fundamental unit of biology
, Prokaryotic Cells
ANSWER-NO defined nucleus and NO membrane- bound organelles.
Eukaryotic Cells
ANSWER-Membrane-enclosed nucleus and series of membrane-bound organelles
that carry out the functions of the cell as directed by the genetic information
contained in the nucleus.
Nucleus
ANSWER-Contains DNA called Chromosomes.
Ribosomes
ANSWER-Are organelles that read the RNA produced in the nucleus and
TRANSLATE the genetic instructions to produce PROTEINS.
Bound ribosomes
ANSWER-Are found attached to the endoplasmic reticulum (ER)
Free ribosomes
ANSWER-Are found in the cytoplasm
Endoplasmic reticulum
ANSWER-Attached to the nucleur membrane and consists of two continuous
parts.
QUESTIONS AND CORRECT DETAILED A NEW UPDATED
VERSION LATEST 2024-2025(100% CORRECT VERIFIED
ANSWERS) ALREADY GRADED A+
Properties of Water
2 Hydrogen bonds Covalently bonded to Oxygen.
Hydrogen Bonding between molecules.
- High specific heat
- Large bodies or water stabilize climates
- Strong cohesive and adhesive properties
- Water freezes forms a lattice crystal resulting in ice floating in water.
- Polarity of water allows it to act as a universal solvent.
- Water can be used to dissolve different solvents.
Carbohydrates
,ANSWER-Long chains, or polymers of sugar. Most importantly form the backbone
of DNA and RNA.
Saturated
ANSWER-Clogs arteries. NO DOUBLE BONDS in their hydrocarbon tail. SOLID @
room temperature.
Unsaturated
ANSWER-Double bond in their hydrocarbon tail. LIQUID at room temperature.
Phospholipids
ANSWER-Phosphate group (polar) soluble in water. Hydrocarbon tail of fatty acids
is nonpolar and nonsoluble in water.
Ex. Cell Membrane
Steroids
ANSWER-Are lipids, which are precursors to hormones and drugs
Proteins
ANSWER-They are Polymers of 20 molecules called Amino Acids. Enzymes are a
type of protein, which catalyze different reactions or processes. LARGEST
Biological Molecule
Cell
ANSWER-Fundamental unit of biology
, Prokaryotic Cells
ANSWER-NO defined nucleus and NO membrane- bound organelles.
Eukaryotic Cells
ANSWER-Membrane-enclosed nucleus and series of membrane-bound organelles
that carry out the functions of the cell as directed by the genetic information
contained in the nucleus.
Nucleus
ANSWER-Contains DNA called Chromosomes.
Ribosomes
ANSWER-Are organelles that read the RNA produced in the nucleus and
TRANSLATE the genetic instructions to produce PROTEINS.
Bound ribosomes
ANSWER-Are found attached to the endoplasmic reticulum (ER)
Free ribosomes
ANSWER-Are found in the cytoplasm
Endoplasmic reticulum
ANSWER-Attached to the nucleur membrane and consists of two continuous
parts.
