EVALUATION 2026 GUARANTEED PASS
ANSWERS GRADED A+
● Cytoplasma. Answer: Intracellular fluid containing organelles
● Nucleus. Answer: Control center; largest organelle; genetic library
with blueprints for nearly all cellular proteins in the DNA
● Lipid Bilayer. Answer: Provide the barrier that marks the boundaries
of a cell; composed of two layers of fat cells organized in two sheets
● Fluid Mosaic Model. Answer: The cell membrane as a two-
dimensional liquid that restricts the lateral diffusion of membrane
components
● Intracellular Fluid. Answer: Fluid of cytoplasma
● Extracellular Fluid. Answer: Fluid around cells
● Interstitial Fluid. Answer: ECF that surrounds cells
● Hydrophilic. Answer: tend to mix with water
, ● Hydrophobic. Answer: tends not to mix with water
● Integral Membrane Protein. Answer: Firmly inserted into membrane;
function as transport proteins, enzymes, or receptors
● Peripheral Membrane Protein. Answer: Loosely attached to integral
proteins; function as enzymes; motor proteins for shape change during
cell division and muscle contraction
● Ion Channel. Answer: Pore-forming membrane proteins whose
functions include establishing a resting membrane potential
● Receptor Protein. Answer: Receptor is a protein molecule that receives
chemical signals from outside a cell
● Tight Junction. Answer: Adjacent integral proteins fuse to form
impermeable junction encircling cell; prevent fluids and most molecules
from moving between cells
● Desmosomes. Answer: "Rivets" or "Spot Welds" that anchor cells
together; Keratin filaments extend through cytosol to opposite plaque
giving stability to cell