Line 1: *Antibodies are large, Y-shaped proteins that recognize and bind to antigens. ALL immunogens are antigens. Antibodies are large, Y-shaped proteins that recognize and bind to immunogens.*
*(G)*
Line 2: *Antibodies are large, y-shaped proteins that recognize and bind to:
Options:
- (A) humans
- (B) A Greek letter
- (C) bones
- (D) the skin
- (E) animals
- (F) inorganic items
- (G) immunogens
- (H) water*

Logic of a solution: *Evaporation of sweat uses energy, and the energy comes from body heat. Diaphoresis is a fancy medical term for perspiration or sweating. Evaporation of perspiration uses energy and the energy comes from body heat.*
*(B)*
The original question: *Which of the following uses energy that comes from body heat?
Options:
- (A) kinetic energy
- (B) evaporation of perspiration
- (C) kinetic friction
- (D) evaporation of snow
- (E) Transfers energy
- (F) a rock rolling down a hill
- (G) a fire burning near a campsite
- (H) converting mass to energy*

Line 1: *Insulin helps cells take up glucose from the blood. Blood Glucose Blood Glucose Glucose is the principal source of energy for mammalian cells. Insulin helps cells take up energy from the blood.*
*(E)*
Line 2: *Cells obtain energy from the blood with the help of
Options:
- (A) sweating
- (B) batteries
- (C) pancreas
- (D) electron
- (E) insulin
- (F) alveoli
- (G) oxygen
- (H) sunlight*

Logic of a solution: *Bottleneck effect occurs when a population suddenly gets much smaller. Population is the number of people. Bottleneck effect occurs when the number of people suddenly gets much smaller.*
*(G)*
The original question: *What is it called when the number of people suddenly gets smaller?
Options:
- (A) competing for resources
- (B) competition
- (C) A Greek letter
- (D) heat or cold
- (E) Earth orbiting the Sun
- (F) permineralization
- (G) bottleneck effect
- (H) relocation*

Line 1: *Flowing water can slowly dissolve carbon in sedimentary rock. Limestone is a type of sedimentary rock. Flowing water can slowly dissolve carbon in limestone.*
*(F)*
Line 2: *Flowing water from a mountain can dissolve carbon in what kind of rock?
Options:
- (A) magma
- (B) loose soil
- (C) loose dirt
- (D) precipitation
- (E) pumice
- (F) limestone
- (G) wind and rain
- (H) andesite*

Line 1: *Trees have woody stems covered with bark. Stems of plants include trunks and branches. Trees have woody trunks covered with bark.*
*(G)*
Line 2:
*What part of a tree would be woody and covered in bark?
Options:
- (A) shrub beds
- (B) the leaves
- (C) the roots
- (D) cacti
- (E) a sapling
- (F) Chlorophyll
- (G) the trunk
- (H) four limbs*