What is the outer boundary of the cell?
a) cell wall
b) plasma membrane
c) nuclear membrane
d) endoplasmic reticulum
What is an organic, nonprotein component of an enzyme molecule called?
a) an accessory enzyme
b) an allosteric group
c) a coenzyme
d) a functional group
Most of the enzymes are composed of
a) carbohydrates
b) lipids
c) proteins
d) phosphates
The transfer of energy from one reaction to another in order to drive the second reaction is called
a) first law of thermodynamics
b) second law of thermodynamics
c) energy coupling
d) exergonic reactions
Which statement about cellular respiration is CORRECT?
a) Glycolysis takes place inside the mitochondria.
b) Most of the ATP produced is from oxidative phosphorylation.
c) NAD+ is an electron donor.
d) Water is the final electron acceptor in the electron transport chain.
Which defines a codon?
a) a protein that begins transcription by breaking apart H bonds
b) a free-floating base that attaches to an open DNA strand
c) the genetic code word of three bases on mRNA that specify one amino acid
d) the strong bond between two complementary nitrogen bases
If a portion of a messenger RNA molecule contains the base sequence A-A-U, the corresponding transfer RNA base sequence is
a) A-A-U
b) G-G-T
c) T-T-C
d) U-U-A
Which of the following is attached to the transfer RNA (tRNA)?
a) DNA
b) ribosome
c) amino acid
d) nucleic acid
Which of the following is NOT true about the structure of DNA?
A) deoxyribose and phosphate forms the handrails of the molecule
B) DNA consists of two, antiparallel strands of nucleotides
C) N-containing bases form the rungs of the DNA ladder
D) all of the above are true
Which of the following is NOT an endocrine gland?
a) pancreas
b) adrenal glands
c) salivary glands
d) thyroid gland
Fill in the blanks:
Word Bank: Nucleus, Chloroplast, Golgi Apparatus, Rough Endoplasmic Reticulum, Mitochondria, Lysosome, vacuoles, cytoplasm
Modifies or packages proteins for export from the cell: Golgi Apparatus
The organelle that controls the cell’s activities and contains the DNA: Nucleus
A complex network that transports materials throughout the cell. Holds many ribosomes: Rough Endoplasmic Reticulum
An organelle that converts sunlight energy, carbon dioxide and water into high energy sugar molecules: Chloroplast
Transforms the chemical energy stored in food molecules into energy the cell can use: Mitochondria