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WorksheetsBiology Review SB1
Total questions: 30
Worksheet time: 28mins
Name
Class
Date
1.
SB1a. A lab technician needs to determine whether cells in a test tube are prokaryotic or eukaryotic. The technician has several dyes she could use to stain the cells. Four of the dyes are described in the table below.
a)
acridine orange
b)
osmium tetroxide
c)
eosin
d)
Nile blue
2.
SB1a. A type of cell that can exist in broad range of environmental conditions, can rapidly multiply, and lacks a nucleus is called what type of cell?
a)
Animal
b)
Eukaryote
c)
Plant
d)
Prokaryotes
3.
SB1a. The drawing below illustrates a small portion of the molecules that make up a cell membrane.
What is an important function of the cell membrane in this model?
What is an important function of the cell membrane in this model?
a)
Help cells recognize each other
b)
Packaging cell products for export
c)
Control the passage of materials
d)
Proving energy for the cell
4.
SB1a. Prokaryotes are structurally simple organisms that have existed over two billion years. Which of the following are prokaryotes?
a)
Bacteria
b)
Fungi
c)
Plants
d)
Viruses
5.
SB1a.What is one major difference between prokaryotes and eukaryotes?
a)
Prokaryotes have many DNA replication origins while eukaryotes do not.
b)
Eukaryotes have circular DNA while prokaryotic DNA forms a double helix shape.
c)
Eukaryotes have membrane-bound organelles while prokaryotes do not.
d)
Prokaryotic cells have a nucleus while eukaryotic cells do not.
6.
SB1b. The role of the enzyme in a chemical reaction is speed up the reaction by _________________
a)
Increasing the activation energy
b)
Lowering the activation energy
c)
Increasing the pH of the reaction
d)
Decreasing the temperature of the reaction
7.
SB1b. Which of the following best describes the function of an enzyme?
a)
Speed up reactions
b)
Lower Activation energy
c)
Break substrates down into smaller units
d)
All of the above are true
8.
SB1b.The specific location where a substrate binds on an enzyme is called the:
a)
Active site
b)
Catalyst region
c)
Connection site
d)
Reactant complex
9.
SB1b. Enzymes influence chemical reactions in the body by
a)
providing the substrate required for the reaction to occur
b)
affecting the rate at which reactions occur
c)
absorbing water released when polymers are formed
d)
combining with excess hydrogen to form wastes
10.
SB1d. Many bacteria live in fresh water. Which of these statements best describes what will happen when freshwater bacterial cells are placed in salt water?
a)
Water leaves the cell, causing the cell to expand
b)
Water leaves the cell, causing the cell to shrink.
c)
Water enters the cell, causing the cell to expand.
d)
Water enters the cell, causing the cell to shrink.
11.
SB1b. Special proteins called enzymes are biological catalysts. This means that they:
a)
Speed up the rate of chemical reactions in biological processes
b)
Reduce the activation energy required to start a chemical reaction
c)
All of the above
d)
None of the above
12.
SB1c.Like complex carbohydrates, proteins are biomolecules that serve many functions and can be chemically broken down and restructured. Both proteins and complex carbohydrates are which of the following?
a)
Polymers of smaller subunits
b)
Sequences of sugars
c)
Lipids are larger molecules
d)
Lipids are larger molecules
13.
SB1c.Which of these are the repeating units that form a DNA molecule?
a)
fatty acids
b)
nucleotides
c)
amino acids
d)
chromosomes
14.
SB1c. Athletes are often concerned with the question of how much protein they need in their diets because of the requirement of growing muscles for protein. Just as the muscles need the basic building blocks of protein, protein itself has basic building blocks. Which of the following are the basic building blocks of protein?
a)
Nitrogen bases
b)
Amino acids
c)
Monosaccharaides
d)
Fatty acids
15.
SB1c. Which of the following is the main reason humans need carbohydrates in our diet?
a)
Carbohydrates are broken down in the cells to provide energy
b)
Carbohydrates combine to form many different proteins
c)
Carbohydrates act as catalysts that speed up chemical reactions
d)
Carbohydrates store our genetic information
16.
Sb1c. The table provides information about the composition and function of four important molecules in living organisms.
Which of the molecules in this table is a carbohydrate?
Which of the molecules in this table is a carbohydrate?
a)
1
b)
2
c)
3
d)
4
17.
SB1c. Which molecules store and transmit genetic information?
a)
Lipids
b)
Proteins
c)
Nucleic Acids
d)
Carbohydrates
18.
SB1c. All four biomolecules (protein, carbohydrate, nucleic acid, lipid) include which of the following elements?
a)
CHO
b)
CO
c)
CHON
d)
CHONP
19.
SB1c.Most carbohydrates in the human body are
a)
used as building blocks for proteins
b)
used as catalysts for reactions in cells
c)
consumed as a source of energy
d)
not easily absorbed into the bloodstream
20.
SB1d.The water molecules in this beaker will move -
a)
to the right
b)
to the left.
c)
both to the left and to the right
d)
both to the left and to the right
21.
SB1d. A cell with 5% solute concentration is placed in a beaker with a 1% solute concentration
What will happen to the cell over time?
What will happen to the cell over time?
a)
the cell will gain H2O and expand
b)
the cell will lose H2O and shrink
c)
the cell will both gain and lose equal amounts of H2O; thus, it will remain the same size
d)
the cell will undergo no exchange of H2O with its surroundings
22.
SB1b. Which organelle is responsible for the "rough" look of the endoplasmic reticulum?
a)
Lysosome
b)
Ribosome
c)
Golgi apparatus
d)
Plasma membrane
23.
SB1b. What packages proteins into forms the cell can use, expel, or keep stored?
a)
Mitochondria
b)
Golgi body
c)
Centrioles
d)
The "Awesome Terrific Protein" (ATP)
24.
SB1b. Antibodies are composed primarily of amino acids. In which class of biomolecules would antibodies belong?
a)
Nucleic acids
b)
Carbohydrates
c)
Proteins
d)
Lipids
25.
SB1b Which of the following conclusions can be drawn from this graph?
a)
The optimum pH of the enzyme is 6.6.
b)
The optimum pH of the enzyme is 5.8
c)
The enzyme’s activity increases as pH increases 5.0 to 9.0
d)
The enzyme’s activity is greater around pH of 8.0 .
26.
SB1b Enzymes need certain environmental conditions in order to function properly. What happens when enzymes are heated to a high temperature?
a)
they die
b)
they denature
c)
they change their amino acid sequence
d)
they work better
27.
SB1d What is diffusion?
a)
when molecules move
b)
when molecules move from a high concentration to a low.
c)
no movement
d)
molecules move everywhere
28.
SB1d The cell below is in a _____________ solution.
a)
Hypertonic
b)
Hypotonic
c)
Isotonic
29.
SB1c What organelle helps with cell digestion and recycling waste materials ?
a)
Lysosomes
b)
Ribosomes
c)
Golgi Complex
d)
ER
30.
SB1c I provide the cell with protection and controls what comes in and out of the cell.
a)
nucleus
b)
cell wall
c)
cell membrane
d)
mitochondria
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