Cell structures
What does each part of the cell theory states?
All living organisms are composed of 1 or more cells. Cells are the basic unit of all living organisms. Cells are form only from previously existing cells. Cells pass copies of their genetic material to daughter cells.
What is the definition of diffusion?
The net movement of particles form an area of high concentration to an area of low concentration.
What is the definition of ecology and what are ecologists?
Ecology is the part of biology (study of life) that involves the relationships of organisms (animals, plants, human, bacteria) to each other and their environment. People who study ecology are called ecologists.
What is the process of mitosis?
Mitosis is cell division that creates two new identical cells, crucial for growth and replacing old cells with new ones.
What is the main idea about diffusion and osmosis?
Diffusion and osmosis are both essential processes that help maintain balance in cells, but they are different in how they move substances.
What is the main difference between prokaryotic and eukaryotic cells?
Eukaryotic cells are larger and contain organelles and a nucleus, while prokaryotic cells are smaller cells that do not contain organelles or a nucleus
What is the definition of osmosis?
The diffusion of water across a selectively permeable membrane is called osmosis.
What is predation and what are some examples?
Predation-one organism hunts another, Hunter: predator, predator eats prey. Ex: wolf hunting moose
Where is DNA found?
Most DNA is located in the cell nucleus, but a small amount of DNA can also be found in the mitochondria.
What is an example that shows how diffusion and osmosis work in cells?
Diffusion is the movement of molecules from an are of high concentration to low concentration, such as oxygen moving into a cell. Osmosis is a specific type of diffusion that involves the movement of water across a semipermeable membrane, like water moving into plant roots.
What is the cell membrane and what are its 2 major functions?
The cell membrane is a barrier that separates a cell from the external environment. The 2 major functions of the cell membrane is to form a boundary between inside and outside of the cell, and control the passage of materials.
What is the definition of solute, solvent, and solution?
A solution is made up of a solute and a solvent. The solvent is the substance that does the dissolving and is present in the largest amount, while the solute is the substance being dissolved.
What are the definitions of four symbiotic relationships and what are some examples of them?
Commensalism-relationship in which one organism benefits and the other is not harmed. Ex: fish was eating food scraps from teeth, shark unaffected.
Parasitism-relationship in which one organism benefits and the other is harmed. Ex: tapeworm/ animals
Competition-when organisms or species compete for limited resources such as food, water, or shelter. Ex: animals fighting over water during drought.
Mutualism-Relationship in which both organisms benefit. (Ex: bees and flowers)
What are the steps of mitosis and which two of these stages occur at the same time?
The steps of Mitosis are: Prophase -> Metaphase -> Anaphase -> Telophase + Cytokinesis. Telophase and cytokinesis are the two final steps that occur at the same time.
What is an example that shows how diffusion and osmosis work in cells?
Diffusion is the movement of molecules from an are of high concentration to low concentration, such as oxygen moving into a cell. Osmosis is a specific type of diffusion that involves the movement of water across a semipermeable membrane, like water moving into plant roots.
What are the 7 cell structures?
Mitochondria, chloroplasts, ribosomes, endoplasmic reticulum, golgi apparatus, vacuole, and lysosome.
What is the definition of concentration?
Any reaction will be in dynamic equilibrium if it's reversible and the rates of the forward and reverse reactions are equal.
What is the definition of ecosystem, biosphere, and biodiversity?
Ecosystem - a biological community of interacting organisms and their physical environment.
Biosphere - The portion of Earth that supports life.
Biodiversity - The variety of all living things and their interactions.
What is the relationship between chromatin and chromosomes?
Chromatin is the complex of genomic DNA with proteins called histones, where each histone-bound DNA molecule is referred to as a chromosome.
Why are diffusion and osmosis important for cells to function properly?
These processes are important because they help cells maintain homeostasis by balancing the amount of substances inside and outside the cell. Without diffusion and osmosis, cells wouldn't be able to take in nutrients or get rid of water effectively, which would harm the cell's ability to survive.
Which common organelles are found in both plant and animal cells?
Common organelles found in both plant and animal cells include the nucleus, mitochondria, endoplasmic reticulum, golgi apparatus, ribosomes, and lysosomes.
What is the definition of dynamic equilibrium and what are some examples of it?
Any reaction will be in dynamic equilibrium if it's reversible and the rates of the forward and reverse reactions are equal. Ex: a car moving with a constant velocity.
What is an ecological pyramid and what are the four levels?
Ecological pyramid is a diagram that can show the relative amounts of energy or numbers of organisms at each topic level. The four levels of the ecological pyramid are primary (first level), secondary (second level), tertiary (third level), and quaternary (fourth level).
What is the central dogma of molecular biology and what does it state?
The central dogma of biology explains the flow of genetic information with a biological system. It states that DNA is used to build RNA, (ribonucleic acid), which then builds proteins.
Why are diffusion and osmosis important for cells to function properly?
These processes are important because they help cells maintain homeostasis by balancing the amount of substances inside and outside the cell. Without diffusion and osmosis, cells wouldn't be able to take in nutrients or get rid of water effectively, which would harm the cell's ability to survive.