Organelles
Body Systems
Ecology
Genetics & Reproduction
Immune Response
100

The powerhouse of the cell. This organelle makes ATP through the process of cellular respiration

What are mitochondria?

100

This system contains the ovaries, fallopian tubes, and uterus. It's purpose is to make gametes, facilitate fertilization, and carry a fetus to term.

What is female reproductive system?

100

The maximum population size that can be supported by a specific ecosystem or environment.

What is carrying capacity?

100

The organ which provides nutrients to a developing fetus. This organ allows the mother to pass oxygen and glucose to the fetus, without allowing the maternal and fetal blood to mix.

What is placenta?

100

An injection containing a dead or weakened pathogen, meant to stimulate the production of antibodies.

What is a vaccine?

200

The organelle that surrounds an animal cell and controls which substances flow into, or out of, the cell.

What is cell membrane?

200

Part of the digestive system, these organs work to break down macromolecules from food.

What is mouth, esophagus, and stomach?

200

An organism that obtains energy from inorganic sources, such as the sun, and synthesizes its own food.

What are producers/autotrophs?

200

These structures are made up of many strands of DNA, or genes. Humans typically have 46 of them.

What are chromosomes?

200
The body produces these in order to neutralize/attack invading pathogens.

What are antibodies?

300

Where photosynthesis happens; only plants have these. They give leaves their green coloring.

What are chloroplasts?

300

The two systems that interact to bring oxygen to all body cells.

What are circulatory system and respiratory system?

300

An organism's unique role, or job, within an ecosystem. If two organisms occupy the same one, they are usually in competition with one another.

What is a niche?

300

These types of cells are created through the process of meiosis.

What are eggs and sperm/gametes?

300

Any microorganism, such as a virus, bacteria, or other parasite, which causes disease in humans.

What is a pathogen?

400

The control center of the cell; genetic information is stored here.

What is the nucleus?

400

Part of the digestive system, this organ absorbs nutrients and allows them to travel to the bloodstream.

What is intestine?

400

These introduced populations often grow uncontrollably due to lack of natural predators.

What are invasive species?

400

Through this process, a zygote is formed.

What is fertilization?

400

An example of this is a rejected organ transplant, where the immune system overreacts against the new organ.

What is allergic reaction?

500

The small organelle that takes mRNA molecules and assembles amino acids, synthesizing proteins. There are many of this organelle in every cell.

What are ribosomes?

500

This system, made up of a network of organs, includes the pancreas, which controls blood sugar levels.

What is endocrine system?

500

The process by which an ecosystem recovers from a devastating event such as forest fire. Over time, the ecosystem gradually recovers, starting with small grasses and shrubs, then larger bushes, and finally the climax ecosystem with a full forest. Biodiversity increases over the course of this process.

What is ecological succession?

500

The process by which an embryo's stem cells develop into specific cell types, such as blood cells, skin cells, muscle cells, bone cells, nerve cells, etc.

What is specialization/differentiation?

500

This virus weakens the immune system, leaving it vulnerable to other pathogens. People don't die directly from this disease, but the attack on the immune system indirectly kills them when they cannot fight infections such as pneumonia.

What is HIV/AIDS?