Download Unit 1 Practice Test - Kirkwood Community College

Unit 1 Practice Test
1) Which of the following is true?
A) A scientific theory is a hunch about a natural event.
B) A scientific fact and a scientific theory carry the same weight in the scientific community.
C) A scientific theory explains what we know to this date about a natural event.
D) My "theory" about how a crime occurred is a scientific theory.
2) Choose the answer that best describes the sequence of the scientific method.
A) experiment, observation, hypothesis, conclusion
B) hypothesis, experiment, observation, conclusion
C) guess, hypothesis, experiment, conclusion
D) observation, hypothesis, experiment, absolute fact
E) observation, hypothesis, experiment, conclusion
3) A scientific explanation that is tentative and that requires more investigation is termed a/an
________________________.
4) Which of the following is a theory?
A) There is molecular and biochemical evidence that all organisms are related.
B) Many people believe Echinacea cures their colds.
C) A boy finds a chipped rock he believes is an arrowhead.
D) A and B are theories.
E) A, B and C are theories.
5) The difference between a theory and a hypothesis is
A) a theory must be proven beyond a shadow of a doubt.
B) a hypothesis must be proven beyond a shadow of a doubt.
C) a hypothesis must be supported by evidence.
D) a theory must be supported by evidence.
E) None of the above are differences.
6) Which of the following is the most complex level of organization?
A) a heart
B) a water molecule
C) a rainforest
D) the circulatory system
7) Which of the following is NOT considered to be an attribute of a living thing?
A) heredity
B) metabolism
C) homeostasis
D) reproduction
E) interdependence
8) Which of the following is an example of homeostasis? An organism that can
A) assimilate and use energy.
B) reproduce.
C) evolve from other living things.
D) maintain a relatively constant internal environment.
E) respond to the environment.
9) Number the following in the correct order of complexity, going from least (1) to most (6) complex?
____Organelle
_____Atom
_____Molecule
_____Organ
_____Tissue
_____Cell
10) Which of the following is not an organic macromolecule?
a. carbohydrate
c. lipid
b. ice
d. nucleic acid
11) Refer to the illustration above. Label each structure in the spaces below.
Structure 1______________________________
Structure 2______________________________
Structure 3______________________________
Structure 4______________________________
Structure 5______________________________
12) Rough endoplasmic reticulum has ____________________ embedded on its surface.
13) The theory of spontaneous generation was refuted by which scientist? _________________________
14) Organelles are compartments within _______________________.
15) A theory must be supported by ________________________.
16) You mix sugar in water and stir until it's completely dissolved. In this system, the water is the
_________, the sugar is the __________, and the end result is a _________.
A) solute; solution; solvent
B) solute; solvent; solution
C) solvent; solution; solute
D) solution; solvent; solute
E) solvent; solute; solution
Answer: E
17) Pure water has a pH of __________ .
Answer: 7
18) Polysaccharides are made up of_________________________.
Answer: sugars
19) DNA is made up of
A) proteins.
B) steroids.
C) nucleotides.
D) amino acids.
E) sugars.
Answer: C
20) Match the definitions on the left with the terms on the right.
1. Is composed of functional units called
genes_______
2. A carbohydrate polymer ________
3. Serve as cell surface receptors_________
a. polysaccharide
b. glycoproteins
c. DNA
21) Which of the following is an example of an eukaryotic cell?
A) an archea
B) a virus
C) a bacteria
D) a plant cell
E) These are all examples eukaryotic cells.
Answer: D
22) Please indicate which of the following rank the given objects in size from smallest (1) to largest (5).
______bacteria
______virus
______protein
______animal cell
______frog egg
Answer: protein, virus, bacteria, animal cell, frog egg
23) What maintains the cell shape, anchors the organelles in place, and moves parts of the cell?
______________________
Answer: cytoskeleton
24) You isolate a cell with a cell wall, chloroplasts, and a central vacuole, this cell is most likely a
__________ cell?
Answer: plant
Answers
1c
2e
3 hypothesis
4a
5d
6c
7e
8d
9 3, 1, 2, 6, 5, 4
10 b
11 endoplasmic reticulum; nucleus; mitochondria; cell membrane; Golgi apparatus
12 ribosomes
13 Pasteur
14 cells
15 evidence
16 e
17 7
18 sugars
19 c
20 c; a; b
21 d
22 protein, virus, bacteria, animal cell, frog egg
23 cytoskeleton
24 plant