biology 1
This type of organism does NOT have a nucleus and membrane-bound organelles.
What is a prokaryote?
Water is classified as a ____ molecule. Why?
Polar; because it has polar covalent bond and a bent shape (unequal sharing of electrons)
Bohr is known for...
Introducing the rings and placing electrons in orbits; Bohr model.
Who introduced the idea of clouds in an atom?
Schrödinger
Photosynthesis is considered a ____ reaction
Cellular respiration is a ____ reaction
Uphill reaction; anabolic
downhill; catabolic
A single stranded structure utilized in protein synthesis
What is RNA?
What simple molecules are the basic units of proteins?
What are amino acids
How many bonds can carbon make?
4
What are the products of cellular respiration?
water and carbon dioxide
What is the difference between glucose, starch, chitin, and cellulose?
Cellulose: makes up the structure of plants like cell wall
Starch: How plants store their food (potato starch)
Glucose: how animals store their food (glycogen)
Chitin: makes up structure of insects
ALL cell types have these four features in common.
What are cytoplasm, DNA, ribosomes, and a cell membrane?
Electrons have a charge of ___, a mass of ___, and are located in ___
Charge of 0, mass 0, in the cloud
The ending product of cellular respiration is...
What is ATP?
A biomolecule that serves as a fast source of energy?
What are carbohydrates
What is a nucleus and in what kind of cells is it found in?
A nucleus controls and regulates the activities of the cell and carries the genes. They are found in eukaryotic cells.
An atom that picks up a charge by gaining or losing electrons
What is an ion?
Rutherford's Gold Foil found that....
The model of an atom should have a dense positive nucleus surrounded by small negative electrons. Plum pudding model.
Define endosymbiosis and how it relates to endosymbiotic theory.
Two independent bacteria combine together to become one bacterium. Bacteria benefit from this arrangement. Internal bacteria are passed down from generation to generation. Believed that this process led to the creation of eukaryotes because a proto-euokaryote engulfed a proto mitochondria. This explains why eukaryotes have mitochondria.
process by which organisms use oxygen to break down food molecules to get chemical energy for cell functions
What is cellular respiration
What molecules are fatty acids made of?
Hydrogen, carbon, oxygen
Made of mostly phospholipids embedded with proteins, this flexible boundary separates life from nonlife.
What is the plasma membrane (cell membrane)?
What are the light reaction inputs for photosynthesis
Water, sunlight(light), NADP+ and ADP
What is active transport?
the movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy.
Which theorist believed that an atom is a "piece of something that is as small as possible?
Democritus
a movement of ions and other atomic or molecular substances across cell membranes without need of energy input
What is passive transport?