AP Biology Midterm Review Sheet
1. Organization of Life- order, evolutionary adaptation, response to the environment, regulation, energy processing, growth and
2. Levels of Organization (10 Levels)
Biosphere- The entire portion o
AP Biology Chapter 5 Definitions
1. Alpha () helix-A spiral shape constituting one form of the secondary structure of proteins, arising from a
specific hydrogen-bonding structure.
2. Amino acid- An organic molecule possessing both carboxyl
Chapter 7 Definitions
1. Active transport- The movement of a substance across a biological membrane against its concentration or
electrochemical gradient with the help of energy input and specific transport proteins.
2. Amphipathic molecule- A molecule th
AP Biology Definitions Chapter 4
1. Amino group- A functional group that consists of a nitrogen atom bonded to two hydrogen
atoms; can act as a base in solution, accepting a hydrogen ion and acquiring a charge of
2. Carbonyl group- A fu
AP Biology Definitions
1. Animalia -The kingdom that consists of multicellular eukaryotes that ingest their food.
2. Plantae -The kingdom that consists of multicellular eukaryotes that carry out photosynthesis.
3. Population -A localized gr
AP Biology Chapter 3 Definitions
1. Acid- A substance that increases the hydrogen ion concentration of a solution.
2. Acid precipitation- Rain, snow, or fog that is more acidic than pH 5.6.
3. Adhesion- The attraction between different kind
Chapter 7 Membrane Structure and Function
Overview: Life at the Edge
The plasma membrane separates the living cell from its nonliving surroundings.
This thin barrier, 8 nm thick, controls traffic into and out of the cell.
Like all biolo
Chapter 14 Vocabulary AP Biology
1. Alleles- Alternative versions of a gene that produce distinguishable phenotypic effects.
2. Amniocentesis- A technique of prenatal diagnosis in which amniotic fluid, obtained by aspiration from a needle inserted
To perform their many tasks, living cells require energy from outside sources.
Energy enters most ecosystems as sunlight and leaves as heat.
Photosynthesis generates oxygen and organ
Every day we observe heritable variations (such as brown, green, or blue eyes) among individuals in a population.
These traits are transmitted from parents to offspring.
One possible explana
February 15, 2012
AP Biology Homework: Chapter 18 and 19
1. Some double-stranded DNA viruses can reproduce by two alternative mechanisms: The lytic
cycle and the lysogenic cycle. The lytic cycle is the reproductive cycle that culminates in
Chapter 12 The Cell Cycle
Overview: The Key Roles of Cell Division
The ability of organisms to reproduce their kind is the one characteristic that best distinguishes living things from nonliving
The continuity of life is based on the reproduction
Cell-to-cell communication is absolutely essential for multicellular organisms.
Cells must communicate to coordinate their activities.
Communication between cells is also important for many unicellul
Life on Earth is solar powered.
The chloroplasts of plants use a process called photosynthesis to capture light energy from the sun and convert it to chemical
energy stored in sugars and oth