a) the archaea
b) the protistans
c) the fungi
d) all of the above
a) the archaea
The molecule associated with energy transfer in living organisms is:
a) deoxyribonucleic acid
b) lipids
c) ATP
d) carbon
c) ATP
A community and its physical and chemical environment constitute:
a) a population
b) the biosphere
c) an ecosystem
d) an organ system
c) an ecosystem
The molecule of inheritance is:
a) deoxyribonucleic acid
b) lipids
c) ATP
d) carbon
a) deoxyribonucleic acid
Which of the following is not a requirement of all living things:
a) reproduction
b) metabolism
c) adaptation
d) aerobic respiration
e) none of the above
d) aerobic respiration
The one-way flow of energy through the biosphere starts with energy input from:
a) deoxyribonucleic acid
b) the sun
c) ATP
d) aerobic respiration
b) 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:
E) Homo sapiens
Decomposers include certain bacteria and fungi.
T
Sexual reproduction results in offspring that are genetically identical to the parent.
F
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 gain or lose electrons to form
a) ionic bonds
b) covalent bonds
c) hydrogen bonds
a) ionic bonds
The normal range of blood pH indicates:
a) 7.3-7.5
b) 5.5-6.3
c) 7.8-8.3
d) above 8.5
a) 7.3-7.5
Two atoms of oxygen are bond together by double covalent bond. How many electrons do they share?
a) 2
b) 4
c) 6
d) 5
b) 4
Neutrons are negatively charged. T/F
F
Water is a great solvent of polar molecules. T/F
T
In a polar covalent bond, electrons are equally shared. T/F
F
Loss of a protein’s normal 3-D shape because of high temperatures or changes in pH is
called:
a) metabolism
b) denaturation
c) hydrolysis
d) condensation
b) denaturation
In a condensation reaction, two small molecules covalently bond to form a larger molecule. T/F
T
Ribose is a 6-carbon monosaccharide. T/F
F
building blocks of nucleic acids are
nucleotides
building blocks of proteins are
amino acids
building blocks of most lipids are glycerol &
fatty acids
building blocks of carbohydrates are
monosaccharides
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 T/F
F
In active transport solutes are transported down their concentration gradient. T/F
F
Phospholipids contain a hydrophobic head and two hydrophillic tails. T/F
F
Plant cells but not animal cells have:
a) Golgi bodies
b) ER
c) plastids
d) central vacuole
e) c & d
e) c & d
synthesis of proteins takes place in
covalent
photosynthesis takes place in
chloroplasts
synthesis of lipids takes place in
smooth ER
modify, sort, package &ship proteins & lipids
Golgi bodies
provide movement for the cells
flagella
digestion in the cell is done by
lysosomes
ATP is produced in
mitochondrion
What would be the complimentary strand of DNA to the DNA strand below?
DNA
3’A-T-C-G-T-T-G-A-C-A-T-T 5’
5’ T-A-G-C-A-A-C-T-G-T-A-A 3’
5'- 3'
One species’ DNA differs from others in its
a) sugars
b) phosphate groups
c) nucleotide sequence
d) all of the above
nucleotide sequence
DNA replication results in
a) four molecules, half-old, and half-new strands
b) two molecules, each with one old strand and one newly assembled strand of nucleotides
c) three double-stranded molecules, one with new strands and two that are discarded
d) none of the above
b) two molecules, each with one old strand and one newly assembled strand of nucleotides
DNA binding proteins __________________
stabilize the single-stranded DNA & the strands apart
DNA polymerase
adds DNA nucleotides to the primer to build the strand
ligase
joins Okazaki fragments seals small gaps
helicase
unwinds parental DNA double helix
Primase
produces & adds primers to template strand
Watson & Crick
discovered the double helix structure of DNA
What would be the mRNA transcribed from this DNA sequence?
DNA
3’T-A-C-A-T-A-A-G-G-A-A-T-T-C-T-A-C-T5/
mRNA
5’A-U-G-U-A-U-U-C-C-U-U-A-A-G-A-U-G-A3’
The RNA molecule is
a) a double helix
b) single-stranded
c) double-stranded
d) none of the above
b) single-stranded
mRNA is produced by
a) replication
b) transcription
c) translation
b) transcription
The five-carbon sugar found in RNA is:
a) galactose
b) ribose
c) deoxyribose
d) glucose
b) ribose
The loading of mRNA onto an intact ribosome occurs during
a) translation
b) transcription
c) transcript processing
d) none of the above
a) translation
The enzyme used during transcription is DNA polymerase.___ T/F
F
A codon is a double nucleotide on mRNA.___T/F
F
initiation
the first tRNA carrying methionine binds ribosome and mRNA
elongation
tRNA molecules carrying amino acids add to the growing polypeptide chain
termination
a stop codon is reached
The final product(s) of glycolysis include:
a) glucose molecules
b) pyruvate molecules
c) ATP
d) b & c
e) a & c
d) b & c
Oxygen is formed during:
A) the non-cyclic pathway of ATP
Cell’s ability to acquire energy and use it to, store, build, or break apart substances is
called:
a) biochemistry
b) photosynthesis
c) respiration
d) metabolism
d) metabolism
Enzymes
a) catalyze metabolic reactions
b) lower the activation energy
c) get used up during a reaction
d) a & b
e) a & b & c
d) a & b
In the non-cyclic pathway of the light-dependent stage of photosynthesis, two photosystems are involved. T/F
T
Glucose is formed in the light-dependent stage of photosynthesis.
T/F
F
The starting molecule in glycolysis is pyruvate
T/F
F
Krebs cycle of aerobic respiration takes place in the cytoplasm
T/F
F
CO2 is released during Krebs(citric acid) cycle. T/F
T
Light-independent stage of photosynthesis takes place in the grana
T/F
F
In exergonic reactions, energy is released. T/F
T
In animals cells, cytoplasmic division is done by furrowing T/F
T
Nuclear membrane begins to break down in prophase. T/F
T
Chromosomes are at their maximum condensation in telophase. T/F
F
Random alignment of the homologous chromosomes happens at metaphase I.
T/F
T
There are two nuclear divisions in mitosis and one nuclear division in meiosis.
T/F
F
Mitosis and cytokinesis give rise to two clones (genetically identical cells).
T/F
T
A human primary oocyte can give rise to only one viable egg.
T/F
T
Sister-chromatids are lined up at the equator of the spindle at:
C) metaphase stage of mitosis
Chromosomes are duplicated in:
a) prophase
b) the G1 stage of interphase
c) the S stage of interphase
d) the G2 stage of interphase
c) the S stage of interphase
Crossing over
a) takes place during prophase I stage of meiosis
b) happens between the nonsister chromatids
c) produces variety in the genetic make up of the gametes
D) all of the above