Which of the following contains prokaryotic cells?
A) the archaea
The molecule associated with energy transfer in living organisms is:
B) ATP
A community and its physical and chemical environment constitue:
C) an ecosystem
The molecule of inheritance is:
D) deoxyribonucleic acid
Which of the following is not a requirement of all living things:
D) breathing
The one-way flow of energy through the biosphere starts with energy input from:
D) the sun
The scientific name for human is HOMO SAPIENS. HOMO is the genus and SAPIENS is the specie. The scientific way to refer to human is:
a) Homo sapiens
b) Sapiens Homo
c) homo Sapiens d) Homo sapiens e) Sapiens homo
d) Homo sapiens
Decomposers include certain bacteria and fungi.
True
Sexual reproduction results in offspring that are genetically identical to the parent.
False
The atom of element Phosphorus has 16 neutrons and 15 electrons. What is the atomic number for Phosphorus atom?
15
Element Helium(He) has atomic number of 2. Do you consider this element reactive or inert?
Inert
Atoms gains or lose electrons to form
C) ionic bonds
The normal range of blood pH indicates:
A) 7.3-7.5
Two atoms of oxygen are bond together by double covalent bond. How many electrons do they share?
B) 4
True or False:
Neutrons are negatively charged.
False
True or False:
Water is a great solvent of polar molecules.
True
True or False:
In a polar covalent bond, electrons are equally shared.
False
Loss of a protein's normal 3-D shape because of high temperatures or changes in pH is called:
B) denaturation
True or False:
In a condensation reaction, small molecules come together to make a large molecule.
True
True or False:
Ribose is a 6-carbon monosaccharide.
False
Match the Terms with their most suitable descriptions:
___ building blocks of nucleic acids
D. nucleotides
Match the Terms with their most suitable descriptions:
___ building blocks of protein are
D. amino acids
Match the Terms with their most suitable descriptions:
___ building blocks of most lipids are and
G. fatty acids
Match the Terms with their most suitable descriptions:
___ building blocks of carbohydrates
G. monosaccharides
True or False:
If a solution outside of a cell contains a greater concentration of dissolved solutes than the contents of the cell, the solution is said to be hypotonic.
False
In active transport solutes are transported down their concentrated gradient.
False
Phospholipids contain a hydrophobic head and two hydrophillic tails.
False
Plant cells but not animal cells have:
A) c & d
Match the Terms with their most suitable descriptions:
____ synthesis of proteins takes place in
mitochondrion
b. vesicles
c. lysomes
d. nucleic acids
e. amino acids
f. amyloplasts
g. chromoplasts proteins
h. chloroplasts
i. covalent
j. Golgi bodies
k. smooth ER
l. rough ER
m. nucleolus
n. flagella
o. nucleus
l. rough ER
Match the Terms with their most suitable descriptions:
____ photosynthesis takes place in
D. chloroplasts
Match the Terms with their most suitable descriptions:
____ synthesis of lipids takes place in
L. smooth ER
Match the Terms with their most suitable descriptions:
____ modify, sort, package & ship & lipids
O. Golgi bodies
Match the Terms with their most suitable descriptions:
____ provide movement for the cells
C. flagella
Match the Terms with their most suitable descriptions:
____ digestion in the cell is done by
B. lysomes
Match the Terms with their most suitable descriptions:
____ ATP is produced in
E. mitochondrion
Multiple Choice:
Enzymes:
E) a & b
The final product(s) of glycolysis include:
C) b & c
Oxygen is formed during:
A) the non-cyclic pathway of ATP formation
Cell's ability to acquire energy and to use it to, store, build, or break apart substances is called:
C) metabolism
True or False:
In the non-cyclic pathway of the light-dependent stage of photosynthesis, two photosystems are involved.
True
True or False:
Glucose is formed in the light-dependent stage of photosynthesis.
False
True or False:
The starting molecule in glycolysis is pyruvate.
False
True or True:
Krebs cycle of aerobic respiration takes place in the cytoplasm.
False
True or False:
CO2 is released during the Krebs(citric acid) cycle.
True
True or False:
Light-independent stage of photosynthesis takes place in the grana.
False
True or False:
In exergonic reactions, energy is released.
True
True or False:
According to the second law of thermodynamics, the entropy in the universe is increasing.
True
What would be the complimentary strand of DNA to the Dna strand below?
DNA A-T-C-G-T-T-G-A-C-A-T-T
T-A-G-C-A-A-C-T-G-T-A-A
One species' DNA differs from others in its
C) nucleotide sequence
DNA replication results in
B) two molecules, each with one old strand and one newly assembled strand of nucleotides
Match the Terms wirh their most suitable descriptions:
____ DNA binding proteins
A. stabilize the single-stranded DNA
Match the Terms wirh their most suitable descriptions:
____ DNA polymerase
D. obtains nucleotides and correctly pairs them
Match the Terms wirh their most suitable descriptions:
____ ligase
D. attaches small gaps
Match the Terms wirh their most suitable descriptions:
____ helicase
D. unwinding enzyme
Match the Terms wirh their most suitable descriptions:
____ Watson & Crick
F. discovered the double helix structure of DNA
Match the Terms wirh their most suitable descriptions:
____ Rosalind Franklin
B. provided excellent x-ray diffraction images of DNA
What would be the mRNA transcribed from this DNA sequence?
DNA T-A-C-A-T-A-A-G-G-A-A-T-T-C-T-A-C-T
For how many amino acids does this mRNA sequence code?
mRNA A-U-G-U-A-U-U-C-C-U-U-A-A-G-A-U-G-A; 5
The RNA molecule is
B) single-stranded
mRNA is produced by
A) transcription
The five-carbon sugar found in RNA is:
B) ribose
The loading of mRNA onto an intact ribosome occurs during
A) translation
True or False:
The enzyme used during transcription is DNA polymerase.
False
True or False:
A codon is a double nucleotide on mRNA.
False
Match the description with the corresponding stage of translation:
___ initiation
B. the first tRNA carrying methionine binds ribosome and mRNA
Match the description with the corresponding stage of translation:
___ elongation
E. tRNA molecules carrying amino acids add to the growing polypeptide chain
Match the description with the corresponding stage of translation:
