1. Marine Cadet Arms Test
   Military Corps Allegiance Test
2. Medical College Admission Test

The MCAT is the Medical College Admission Test used by institutions in the United States. If you want to be a medical student, you have to pass this critical exam.

1. to make eggs
   to create immune cells
2. to provide a target for the fists of childhood bullies

Most vertebrates have a spleen, and one of its primary functions is in support of the immune system. It creates antibodies that ward off infections.

1. color
   acidity
2. structure

In a lot of living cells, scientists find protein tubules and filaments that make up the cytoskeleton. The cytoskeleton gives the cell shape and structure.

1. made of wheat
   salmonella
2. bacteria

You don’t need to wash your hands, ever. You're already teeming with other lifeforms. Some scientists estimate that 90% of the cells in a human body are bacteria.

1. eyes
   nervous system
2. liver

As vertebrate embryos develop, the nervous system grows and evolves. Neural plates turn into neural tubes, and the central nervous system begins to take shape.

1. respiratory system
   lymphatic system
2. nervous system

The lymphatic system is an often unsung hero of the human body. With its nodes and ducts, it transfers toxins and wastes​ out of the body before it can do serious harm.

1. gametes
   mitochondria
2. Golgi Complex

Mitochondria are often called the powerhouses of the cell. They use oxidative metabolism to turn food into energy that organisms need to survive.

1. The brain loses too much iron.
   The body struggles to fight off infections.
2. You sneeze around cats.

When the body loses some (or all) of its ability to fight of critters like harmful bacteria or viruses, it's in a state of immunodeficiency. Severe immunodeficiency often causes death.

1. organisms that can move independently
   obstructions of the respiratory system
2. hemoglobin

Cells are basic blocks of life, and all cells are motile objects thanks to their ability to divide into new cells. They are organisms that can move independently.

1. circulatory system
   respiratory system
2. nervous system

Angiotensin II can be used to help with hypotension in the circulatory system. Hypotension can often happen due to septic shock.

1. plants
   bacteria
2. badgers

In the right conditions, certain types of bacteria can move across surfaces using what's called swarming motility. Plentiful food and moderate temperates make many bacteria thrive.

1. social cues
   biosignals
2. intelligence

Biosignals are any measureable signal in organisms. EEGs and MMGs are methods used to measure brain activity and muscle contraction, respectively.

1. illegal immigrants
   older people
2. smaller people

In the U.S., Medicare is a vital tool for many older Americans who would otherwise go without health care. Medicaid, on the other hand, is often meant for anyone who doesn't have the resources to get regular health care out of pocket or perhaps through an employer.

1. glia
   blood
2. neurons

In adults, bone marrow is the hub of hematopoiesis​, the creation of blood. One person might create 100 billion new red blood cells each day.

1. true
2. false

In 1665, Robert Hooke became the the first person to observe cells. His use of a primitive microscope altered the course of science, making it possible for humans to see very tiny cells.

1. viruses
   bacteria
2. politicians

Cacteria and archaeans are two type of prokaryotic organisms. They have a cell nucleus that isn't contained within a well-defined membrane.

1. neurological disfunction
   DNA
2. colon cancer

Ribonucleic acid or RNA, is a lot like DNA. Both carry the genetic coding that's critical for instructing the activities of various body cells.

1. They cause instant death.
   strange political leanings
2. an ability to live in very harsh conditions

Extremophiles are microorganisms that can survive in harsh conditions, from very high or low temperatures, alkalinity, or wild chemical concentrations. They are typically archaeans.

1. rigor mortis
   spermatozoa
2. organelles

Eukaryotic cells have a nucleus and multiple types of organelles. Organelles ha​ve specific jobs, from creating energy to generating new hormones.

1. adaptive immune response
   galvanic skin response
2. lymphoid tissue

Electrodermal activity is a term used to describe the varying electrical traits of skin. It's is also commonly called galvanic skin response or skin conductance response, among other terms.

1. nuclei
   neurulation
2. boundaries

Eukaryotes are cells that have a well-defined nucleus tucked away behind a membrane. These kinds of cells can reproduce either sexually or asexually.

1. the retinas
   organs
2. your codependent child

Stroma is the structural tissue that helps organs maintain their shape and function. Parenchyma, on the other hand, describes the functional parts of the organ.

1. generalized anxiety disorder
   leukemia
2. conversion disorder

A conversion disorder is manifested by a sensory or motor problem … but it's one that has a psychological cause, not one that's rooted in issues with the body.

1. liver
   heart
2. spleen

Germinal centers are found within the lymphatic system and the spleen. They're incredibly important as part of the body's immune system.

1. Certain cultural markers associated with the upper class have more value in society.
   the effects of race on health
2. Berlin and London

Cultural capital is a bit like monetary capital -- it's an advantage bestowed on the elite due to their standing in society.

1. totally normal
   an abnormality
2. a way to locate specific genes

When nonhomologous chromosomes have parts that are rearranged, you wind up with chromosomal translocation. It's an abnormality that can cause a variety of issues with extra or missing genes.

1. personal space
   social norms
2. privacy laws

Social norms are established rules of behavior that vary from culture to culture. In the U.S., no one tells their doctor or dentist they love them during a routine exam … unless they're family. Or, you know, nuts.

1. 2,000
   20,000
2. 2 million

Feeling mortal yet? Each and every second, about 2 million of your blood cells die. If you listen closely, you may hear some of them screaming, "banazi!"

1. often bind foreign materials
   may act as hormones
2. can self-replicate

Proteins do all sorts of fantastic things in the human body. But they don't self-replicate like DNA.

1. negative reinforcement
   E. coli
2. generalization

In generalization, a specific stimulus creates a conditioned response. In this example, you've learned to associate all cooked beef with the burger that made you violently ill.