WGU C190 INTRO TO BIOLOGY LATEST UPDATED
VERSION ACTUAL EXAM 300 COMPLETE REAL QUESTIONS
AND CORRECT ANSWERS (CORRECT VERIFIED
SOLUTIONS) |GUARANTEED PASS.
Living organisms are composed of 4 main categories of
molecules known as "the molecule of life". The 4 main
categories are: - Answer-Lipids, carbohydrates, proteins, and
nucleic acids.
Two main types of cells - Answer-Prokaryotes and Eukaryotes
Cells of prokaryotes - Answer-Relatively small and simple; they
do not have any clearly defined compartments inside of them
Cells of eukaryotes - Answer-Include membrane-bound
organelles: compartments inside the cell that contain specific
groups of macromolecules and carry out specific cellular
functions.
One of these organelles is the nucleus; it encloses the DNA
within the cell.
Abiotic - Answer-Non-living matter
,Biotic - Answer-Living matter
Molecule - Answer-Chemical structure consisting of at least two
atoms held together by a chemical bond
Macromolecule - Answer-Biologically important molecules that
are technically polymers.
Polymers are made by combining smaller units called
monomers, which are simpler macromolecules.
Example of a macromolecule: Genetic molecule DNA that
contains the instructions for the development of all living
organisms.
Organism - Answer-Individual living entities that survive and
reproduce as a unit
Atom - Answer-A dense nucleus surrounded by electrons
Cell - Answer-Essentially a tiny droplet of water and other
molecules enclosed by a fluid "skin" or membrane.
,The cell is the smallest and simplest entity that possesses all the
characteristics of life.
Emergent properties - Answer-Characteristics of a system that
are not present in any of its component parts.
E.g. A car's parts disassembled are useless but, when assembled,
work together to perform a function
Microorganism - Answer-Single-celled life forms. E.g. Bacteria
and protests
Organelle - Answer-Compartments inside the cell that contain
specific groups of macromolecules and carry out specific
cellular functions. One of these organelles is the nucleus; it
encloses the DNA within the cell.
Life on Earth shares the following six of the criteria - Answer-*
Response to stimuli
* Cellular organization
* Growth and reproduction
* Transformation of energy and material (metabolism)
, * Multi-level organization
* Ability or tendency to evolve
Only some life forms eat others; producers such as plants do not.
Similarly, only animals (not all life forms) have a nervous
system.
Homeostasis - Answer-The ability or tendency of organisms and
cells to maintain stable internal conditions
DNA's role in an organism - Answer-An inherited molecule that
provides recipes for proteins.
These, in turn, determine cell structure and function.
Scientific inquiry - Answer-Hypothesis
Experimental design
Data collection
Drawing conclusions
Biological macromolecules - Answer-Special molecules that
contain carbon atoms covalently bonded with hydrogen atoms.