Digestive System & Enzymes
Pepsin works in which organ?
Stomach
Amino acids build which macromolecule?
Proteins
If DNA has 32% G, what percent is A?
18%
What happens to a cell in a hypertonic solution?
It shrinks
Which organelle stores DNA?
Nucleus
Trypsin works in which organ?
Small intestine
Which 2 molecules make up a lipid?
Fatty acids + glycerol
Changing one amino acid in hemoglobin may cause what?
Incorrect folding & reduced oxygen-carrying ability
What process describes water moving across a membrane from high to low concentration?
Osmosis
Which organelle makes proteins?
Ribosomes
What happens to pepsin if stomach pH rises to 6?
It becomes less active
A reaction breaking glucose into CO₂ and H₂O is what type? Anabolic or Catabolic
Catabolic
What makes RNA able to exit the nucleus?
It’s single-stranded
Why do red blood cells in 5% salt shrivel?
Water moves out from high → low concentration
Which organelle is a network connected to the nucleus?
Endoplasmic Reticulum
Individuals with lactose intolerance lack which enzyme?
Lactase
Which monomer makes up carbohydrates?
Monosaccharides
Which part is NOT in a nucleotide: amino acid, sugar, base, or phosphate?
amino acid
What do we call it when other molecules that pass a membrane?
Diffusion
Which organelle performs photosynthesis?
Chloroplast
Into what 2 molecules is lactose normally broken down?
Glucose and Galactose
One function of carbohydrates in cells?
Energy or structure
Explain Chargaff’s rule for A–T and C–G pairing.
A=T and C=G because bases pair in equal amounts
If cells take in too much water, what will happen?
Burst/Lyse
Name an organelle in an Animal cell and state its function.
(Answers Vary)