BIO 191 FINAL REVIEW COMPLETE QUESTIONS WITH ACTUAL ANSWERS ALREADY GRADED A+ BY EXPERTS
Living organisms and non-living systems have numerous
... [Show More] characteristics in common, but
only organisms _____________
a) have the ability to move
b) are composed of cells
c) are composed of atoms
d) have the ability to utilize energy
e) have the ability to replicate - b) are composed of cells
While you are riding the ski lift on a very cold day, you start to shiver involuntarily. You know
that shivering is your body's attempt to help regulate your body's temp. Shivering is
therefore best described as a mechanism of:
a)homeostasis
b) sensitivity
c) the hierarchy of complexity
d) evolutionary adaptation - a) homeostasis
Which of the following describes a scientific theory?
a) an educated guess for how a scientific phenomenon is possible
b) a hypothesis that is believed by many scientists
c) a unifying explanation for a broad range of observations
d) a prediction for a scientific observation - c) a unifying explanation for a broad range of
observations
what are the characteristics of living things? - 1) composed of at least one cell
2) sensitivity: response to stimuli ( if walk in dark pupils dilate)
3) growth ( cell size or #), development, reproduction ( pass genetic info to offspring)
4) utilize energy: metabolism ( has energy to power processes)
5) homeostasis: maintain stable internal condition
6) evolutionary adaptation: interaction b/w organisms and environment (causes differential
survival)
7) hierarchy of complexity: simple parts combine to form complex
hierarchy of complexity - atoms -> molecule -> macromolecule -> cell -> tissues -> organs -
> organism
scientific thinking - 1)make observations
2) generate hypothesis
3) form predictions
4) experiment
5) more hypothesis, predictions, experiments
6) conclusion
control group - variable thats unchanged
A duck must eat in order to grow, move and reproduce. Which characteristic of life is this?
a) homeostasis
b) energy utilization
c) ordered complexity
d) sensitivity
e) evolutionary adaptation - b) energy utilization
Which of the following is the second smallest :
water
skin cell
carbon
mitochondria
carb - water
The bonds within one molecule of glucose are:
a) weak covalent bonds
b) strong covalent bonds
c) strong ionic bonds
d) a combination of covalent and ionic bonds - b) strong covalent bonds
how can a water strider walk on water?
a) ionic bonds b/w air and water molecules
b)many weak H bonds b/w water molecules
c) strong, covalent interactions b/w water molecules
d) H bonds b/w the insect and the water droplets - b) many weak H bonds b/w water
molecules
in this molecule, H-O-H, is the bond b/w the o and h a hydrogen bond? - no
A molecule with polar covalent bonds would
a) be soluble in water
b) not be soluble in water
c) contain atoms with very similar electronegativity
d) both A and C are correct - a) be soluble in water
cell theory - 1) cells are the basic unit of life
2) all living things consist of at least one cell
3) all cells come from pre-existing cells [Show Less]