Test 1 Flashcards
What is a prokaryote, eukaryotes?
Organism that contains NO nucleus and have no bacteria & archaea
Organism with a nucleus, contains DNA
Correct sequence of biological organization..
Atoms Molecules Organelle Cell Tissue Organ Organ system
Where are protons, neutron, and electrons located? What are there charges?
Protons= located in atoms nucleus, have a positive charge Neutrons= located in atoms nucleus! have neutral/ no charge Electrons= orbits outside the nucleus, have negative charge
What type of chemical bonds share electrons in an atom?
Covalent bond
What’s the difference between covalent and ionic bonding?
Covalent= shares electron in an atom
Ionic= attraction between two oppositely charged ions
Ionic bond
Attraction between two oppositely charged ions
Name 4 macromolecules
– carbohydrates ( corn, starch)
– proteins (muscle tissue)
– lipids (fats, oil & waxes)
– nucleic acids (DNA & RNA)
What is a nucleotide?
Consists of three things
Building block of nucleic acid, consists of phosphate group, nitrogenous gas, & five carbon sugar
Difference between experimental and control group?
Experimental groups gets the treatment that’s being tested, control group does not.
Process by which a cell or organism maintains this state of internal consistency…
Homeostatsis
Particle of matter, composed of protons, neutrons, and electrons.
Atom
What sighs smallest unit of life that can function independently?
Cell
An atom or group of atoms that has lost or gained electrons, giving it N electrical charge, is called what?
Ion
Why do we have controls in experiments?
Compare changes and results in an experiment
Ph Scale, which side is acid? Which side is a base?
–0-7( acid),(hydrogen, H+)
7 (neutral)
7-14 (base)(hydroxide, OH-)
Positive Ion, is called?
Negative Ion, is called?
– cation ( net positive, attracted to negative)
– anion ( net negative, attracted to positive)
What is periodic table, why do we have it?
Chart that list elements based on atomic #, properties, & electron configuration
To keep chemicals and chemical reactions in order, for us to continually exists..
What is octet rule?
Filling shells in an atom
FIRST LAW OF THERMODYNAMICS
Energy can’t be created or destroyed but can be transferred, energy remains constant
What happens in dehydration synthesis?
2 small molecules join to form a larger molecule, water is removed, and a protein is created
Difference between organic and inorganic molecules?
Organic, contains carbon
Inorganic, does not contain carbon
What are the 4 types of protein structures? What Re they shaped like?
Primary Structure- (straight line)
Secondary Structure-(helix,twisted)
Tertiary Structure–(alpha helix, beta pleated)
Quaternary Structure (
What are the 6 characteristics of life?
- Organization
- Energy use
- Internal constancy
- Reproduction
- Development
- Evolution
Biochemical Reaction to cells is called?
What does it mean for your body?
–Metabolism
–coverts food into energy
