Exam
Comprehensive
Questions with
Verified Answers
Graded A+
1. organelles Answer: nucleus - nuclear pore, nucleolus,
nucleoplasm, nuclear envelope endoplasmic reticulum - rough, smooth
mitochondrion
cytoplasm
secretory vesicles
Golgi apparatus
peroxisome
centrosome
centriole
lysosome
ribosomes
cilium
cell membrane
2. hypothesis Answer: statement consistent with most of the data, may take the form of a model
(an explanation that appears to account for the data); must be testable
3. theory Answer: a hypothesis that has been extensively tested by many investigators, using
ditterent approaches, widely accepted
,4. law Answer: a theory that has been proven with outcomes that are predictable and can be calculat
5. examples of laws Answer: Newton's Law of
Universal Gravitation Ohm's Law
Theory of
Relativity Theory
of Evolution
6. facts Answer: tenuous and dynamic
7. scientific method Answer: used to assess new information
formulate a hypothesis (tentative explanation or model that can be
tested) data are collected and interpreted and the model is
accepted or rejected
8. occam's razor Answer: states that the simplest explanation consistent with the facts is likely to
be correct
9. cell biology Answer: the study of cells (from Latin word
cellula 'little rooms') bacteria, fungi, plants and animals (all
consist of cells)
unicellular and multicellular
,prokaryotic and eukaryotic
dynamic nature - grow, divide, have specialized functions, can respond to stimuli, and adapt to
environmental changes
10. cells Answer: basic unit of biology
11. emergence of modern cell biology Answer: three historical strands weave
together into modern cell biology, each with important contributions to understanding cells
cytology, biochemistry, genetics
12. cytology Answer: focuses mainly on cellular structure and emphasizes optical techniques
13. biochemistry Answer: focuses on cellular function
14. genetics Answer: focuses on information flow and heredity
15. seeing is believing - cytology Answer: observe through microscopes
16. Robert Hooke (1665) Answer: observed compartments in cork, under a microscope
and first named cells (the basic unit of biology)
17. what was Robert Hooke limited by? Answer: his observations were limited by the
low magnification power (30X enlargement) of his microscope
18. Antonie van Leeuwenhoek Answer: produced better lenses that magnified up to
300X
19. units of measurements in cell biology
Answer: microns (µm) 1 centimeter = 10 000
micrometers
20. early progress in cell biology was slow due to Answer: microscopes with
limited resolution (the ability to see fine detail)
the descriptive nature of cell biology; the focus was on observation, with little emphasis on explanation
21. cell theory Answer: postulated by Schwann in 1839
1) all organisms consist of one of more cells
2) the cell is the basic unit of structure for all
organisms later Virchow added
3) all cells arise only from preexisting cells
22. biochemical strand of cell biology Answer: covers the chemistry of
biological structure and function around the same time as people were studying cells
microscopically
23. Fredrich Wohler Answer: synthesized urea in a lab, which was previously thought to
, be only produced by a living organism
contradicted vitalism
24. vitalism Answer: the hypothesis that living things are alive because of some special "vital
force"