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Cells And DNA Final Review
Test Description: This a review of Fall 2013 semester consisting of SEPUP: Cells World Health and Nowicki's Biology - DNA
Instructions: Answer all questions to get your test result.
1) What is the pathogen that causes AIDS?
A
protist
B
bacteria
C
virus
D
eukaryote
2) Which statement best explains the role of ribosomes in protein synthesis?
A
Ribosomes are the sites where the message in the mRNA is translated into proteins.
B
Ribosomes carry mRNA to the cytoplasm where it is translated into DNA.
C
Ribosomes assemble chains of proteins from pieces of DNA in the nucleus.
D
Ribosomes are the sites where DNA is transcribed into mRNA.
3) If the DNA code read ATCG, which choice below would be the sequence of an RNA strand that would bind with the DNA strand?
A
CGUT
B
ATCG
C
UAGC
D
TAGC
4) Each nucleotide triplet in mRNA that specifies a particular amino acid is called a(n)
A
codon
B
anticodon
C
mutagen
D
exon
5) Which of the following organic molecules are most closely related to nucleic acids?
A
sugars
B
fatty acids
C
nucleotides
D
amino acids
6) During transcription
A
RNA is produced.
B
translation occurs.
C
DNA is replicated.
D
protiens are synthesized.
7) Which of the following organic molecules are classifed as carboyhydrates?
A
sugars
B
amino acids
C
nucleotides
D
fatty acids
8) DNA is important for cellular activities because DNA
A
is the major component of cytoplasm.
B
increases the solubility of nutrients.
C
codes for the production of proteins.
D
is a structural component of cell membranes.
9) During replication, a complementary strand of DNA is made for each original DNA strand. Thus, if a portion of the origical strand read CCTAGCT then the new strand would be
A
GGATCGA
B
TTGCATG
C
CCTAGCT
D
AAGTATC
10) How many codons are needed to specificy three amino acids?
A
12
B
6
C
9
D
3
11) Which of the following organic molecules are closely related to proteins?
A
sugars
B
fatty acids
C
amino acids
D
nucleotides
12) The organelles associated with plant photosynthesis are the
A
mitochondria
B
vacuoles
C
golgi body
D
chloroplasts
13) Which of the following is an example of a prokaryotic cell?
A
bacterium
B
amoeba
C
virus
D
liver cell
14) One difference between prokaryotes and eukaryotes is that
A
golgi vessicles are found only in prokaryotes
B
nucleic acids are found in prokaryotes
C
prokaryotes do not have a nucleus
D
mitochondria are found in larger quantities in eukaryotes
15) Studying a picture of a cell, you can clearly see green plastids and a cell wall. You conclude that the cell is probably a(n)
A
animal
B
prokaryote
C
now extinct organism
D
plant
16) The packaging and distribution center of the cell is the
A
nuclear envelope
B
golgi body
C
nucleus
D
central vacuole
17) In a cell, protiens are made in the
A
cell membrane
B
ribosomes
C
mitochondria
D
nucleus
18) The cell membrane consists mainly of
A
phospholipids and proteins
B
water and carbon dioxide
C
carbohydrates and sugars
D
cellulose and pectins
19) The diffusion of water is also called
A
hydrofusion
B
active transport
C
hydrolysis
D
osmosis
20) How do cells move a material from an area of low concentration across a membrane inot an area of higher concentration?
A
active transport, which does not require using energy
B
facilitated diffusion, which does not require using energy
C
facilitated diffusion, which requries using energy
D
active transport, which requires using energy
*select an answer for all questions
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