Ch. 1- Intro to science of life
Name 2 of the 7 things that all life have in common.
order, cells, growth and development, energy utilization, response to the environment, reproduction, evolution
What are elements
Unique forms of matter that have specific chemical and physical properties
What are the four macromolecules
Carbohydrates, lipids, proteins, and nucleic acids
What is an example of an ecosystem
Desert, rainforest, etc.
What is the largest animal on earth
the blue whale
Name all the steps of the scientific method in the correct order
observation, hypothesis, experimentation, analysis/conclusion
What are the four most common elements of living organisms
Carbon, Oxygen, Hydrogen, and Nitrogen
What are the monomers of each macromolecule
Carbohydrates= monosaccharides
Lipids= glycerol and fatty acids
Proteins= amino acids
Nucleic acids= nucleotides
What does the atomic number tell us
the number of protons and electrons
What species of large bird did the Australian minister of defense loose a war to
Emus
What is the independent variable of an experiment
what you are testing; inputs or causes
What is the difference between a covalent bond and an ionic bond
A covalent bond is when electrons are shared and an ionic bond is when atoms give up or gain electrons
What is the tertiary structure of a protein
it is the unique 3-D structure of a polypeptide due to chemical interactions between R-groups on amino acids
True or false: all chemical reactions are irreversible
false, they can be reversible or irreversible
How many hearts do octopuses have
three!
Explain pseudoscience and include an example.
Pseudoscience is something that is falsely represented as having a scientific basis and often based on anecdotal evidence from a single or few examples. An example is fortune telling, phreneology, astrology.
Name and Explain two different properties of water
heat capacity: specific heat capacity refers to the amount of heat one gram of a substance must absorb to raise its temperature one degree Celsius
heat of vaporization: amount of energy required to change one gram of a liquid substance to gas
water is a universal solvent
cohesion: water molecules at the liquid-gas interface stick together due to hydrogen bonding
surface tension: the capacity of a substance to withstand being ruptured when placed under tension or stress
adhesion: attraction between water molecules and other molecules
What are three types of RNA and their roles
Messenger RNA (mRNA)= intermediary nucleic acid that leaves the nucleus and contains blueprint for protein synthesis
Transfer RNA (tRNA)= serves as a bridge between nucleotides and amino acids
Ribosomal RNA (rRNA)= assists in protein synthesis
What is denaturation
changes in protein structure that leads to changes in function
What large mammal was taught to waterski in the 1960s
An elephant
Explain the difference between a single blind study and a double blind study
Draw the Bohr model of Potassium (K) with an atomic number of 19 and Neon (Ne) with an atomic number of 10.
I will write on white board
What is the difference between a saturated fatty acid and an unsaturated fatty acid
A saturated fatty acid contains no carbon-carbon double bonds in the carbon-backbone. An unsaturated fatty acid contains at least one carbon-carbon double bond in the carbon chain backbone
What are functional groups
groups of atoms within a molecule that confer consistent specific properties to these molecules. Functional groups often interact with other functional groups via hydrogen bonds
What is a tardigrade (water bear) related to
They are related to arthropods (insects, spiders, and crustaceans)