College Bio Ch 1 & 2 Quiz

What are the 8 characteristics of life

cells, reproduce, grow and develop, obtain materials and use energy, respond to their environment, stable internal environment, genetic code, change over time

What are the taxonomic categories

Domain, kingdom, phylum, class, order, family, genus, species

What are the 4 bases of DNA

A, C, G, T

Who is the father of evolution

Charles Darwin

What are the 3 domains

Archaea, Bacteria, Eukarya

What are the kingdom(s) in the domain Bacteria

Eubacteria

What are the kingdom(s) in the domain Archaea

archaebacteria

What are the kingdom(s) in the domain Eukarya

Protista, Fungi, Plantae, Animalia

What are the levels of organizations

atom, molecule, organelles, cells, tissues, organ, organ system, organism, population, community, ecosystem, biome, biosphere

What are the 2 main points of Darwin’s book

descent with modification, natural selection

What are the 3 subcategories of Darwin’s book

individuals in a population vary in their traits, populations produce more offspring than survive, species are generally suited to their environment

What is natural selection

those with traits better suited to the environment are more likely to survive and pass their traits to their offspring

what are the steps of the scientific method

observation, hypothesis, experiment, collect data, conclusion, repeat

what are the 2 parts to every experiment

control and variable

how many natural elements are there

92

what are the main 4 elements required by majority of living matter

carbon, hydrogen, oxygen, nitrogen

what percent does each of the 4 essential elements make up in the body

oxygen 65%, carbon 18%, hydrogen 10%, nitrogen 3%

what are the 6 trace elements

phosphorus, iron, sulfur, calcium, iodine, potassium

which of the 6 trace elements is needed in ALL forms of life

iron

what is the difference between atomic number and atomic mass

atomic number tells how many protons there are, atomic mass tells the number of protons and neutrons

what is the function of an isotope

dating relics/fossils

what is a covalent bond

electrons are shared between two or more atoms

what is an ionic bond

electrons are transferred from one atom to another and the oppositely charged particles attract

what is a hydrogen bond

when the polar sides of H2O atoms attract to one another

what are Van der Waals forces

when the orbit of two atoms electrons sync up

why is water a universal solvent

its polarity makes it able to tear apart other polar substances

what makes a substance hydrophilic or hydrophobic

its polarity; polar substances are hydrophilic, nonpolar substances are hydrophobic

how is surface tension formed

powerful hydrogen bonds and cohesion

how is ice/water different from other elements when changing from liquid to solid

ice is less dense than water, which is the opposite from other atoms, where the solid is usually more dense than the liquid