8167221
Descripción
Test por Digital Growth, actualizado hace más de 1 año
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Creado por Digital Growth
hace alrededor de 7 años
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Pregunta 1
Pregunta
Which of the following is a not a characteristics of Telomeres
Respuesta
-
Unicellular Eukaryotes
-
Cancer Cells
-
Blood Cells
-
Limited Cell Division
Pregunta 2
Pregunta
[blank_start]Cell aging[blank_end] and [blank_start]apoptosis[blank_end] may relate to telomere shortening
Respuesta
-
Cell aging
-
apoptosis
Pregunta 3
Pregunta
Telomerase can extend chromosomes by Diving more repeat sequence to their ends
Respuesta
- True
- False
Pregunta 4
Pregunta
Which one of the following answers may best suit
"Cells lose ability to divide after limited number of cell division"
Respuesta
-
Centromere
-
Telomere
-
Diploid
-
Chromatid
Pregunta 5
Pregunta
In which year radioactively labeled bacteriophage protein and DNA where used to see which entered infected cell
Respuesta
-
1950
-
1952
-
1960
-
1962
Pregunta 6
Pregunta
[blank_start]Hershey[blank_end] and [blank_start]Chase[blank_end] showed that when bacteriophages, which are composed of DNA and protein, infect bacteria, their DNA enters the host bacterial cell, but most of their protein does not.
Respuesta
-
Hershey
-
Chase
Pregunta 7
Pregunta
Genetic Materials is
Respuesta
-
DNA
-
Protien
-
RNA
-
Nucleic Acid
Pregunta 8
Pregunta
Genes were protein before they were invented
Respuesta
- True
- False
Pregunta 9
Pregunta
Elements _____ &_____are found in proteins and DNA
Respuesta
-
S & P
-
S & Zn
-
P & Mg
-
P & H
Pregunta 10
Pregunta
Who made the DNA Photographic plate
Respuesta
-
Rosalind Franklin
-
Francis Crick
-
Raymond Gosling
-
Salvador Luria
Pregunta 11
Pregunta
In which year the Model of DNA based on X-ray diffraction proposed
Respuesta
-
1921
-
1951
-
1953
-
1923
Pregunta 12
Pregunta
Who proposed the model of DNA based on X-ray diffraction
Respuesta
-
James Watson & Hershey
-
Marie &Francis Crick
-
Chase & James Watson
-
James Watson & Francis Crick
Pregunta 13
Respuesta
-
Nucleic acid structure & Nucleotide Residues
-
Nucleotide Residues & Nucleic Protein
-
Nucleic Protein & Nucleic acid
-
Nucleic acid & Nucleic protiens
Pregunta 14
Pregunta
[blank_start]1871[blank_end] Nucleus is known to be a mixture of DNA,RNA and Protein
[blank_start]1928[blank_end] Substance in heat-killed bacteria that transforms living bacteria
[blank_start]1944[blank_end] Identification of Griffith's transforming principle as DNA
[blank_start]1949[blank_end] Relationships among DNA bases that provide a clue to DNA structure
Respuesta
-
1871
-
1928
-
1944
-
1949
-
1928
-
1871
-
1949
-
1944
-
1871
-
1944
-
1928
-
1949
-
1871
-
1928
-
1944
-
1949
Pregunta 15
Pregunta
Which of the following are Nucleotide components
Respuesta
-
Adenine
-
Guanine
-
Thymine
-
Adrenaline
-
Tourmaline
-
Cytosine
Pregunta 16
Pregunta
Nucleotide base A and T forms
Respuesta
-
2 H bonds
-
3 H bonds
-
1 H bonds
-
0 H bonds
Pregunta 17
Pregunta
Nucleotide base G and C forms
Respuesta
-
2 H bonds
-
3 H bonds
-
1 H bonds
-
0 H bonds
Pregunta 18
Pregunta
Pentose Sugar : Deoxyribose (H attached to 2' C)
Nitrogenous base attached to [blank_start]1[blank_end]' C
Phosphate group attached to [blank_start]5[blank_end]' C
Respuesta
-
1
-
3
-
7
-
4
-
6
-
2
-
5
-
0
Pregunta 19
Respuesta
-
Nucleotide
-
Phosphate group
-
Phosphodiester
-
Deoxyribose
-
Nucleotide
-
Phosphate group
-
Phosphodiester
-
Deoxyribose
-
Nucleotide
-
Phosphate group
-
Phosphodiester Lingage
-
Deoxyribose
-
Nucleotide
-
Phosphodiester Linkage
-
Deoxyribose
-
Phosphate group
Pregunta 20
Respuesta
-
Both A. and B. are Deoxyribonucleic acid
-
Only A. is Deoxyribonucleic acid
-
A. and B. are Deoxyribonucleic acid
-
A is Deoxyribonucleic acid and B is Ribonucleic acid
Pregunta 21
Pregunta
Paired nucleotide runs anti parallel
Respuesta
- True
- False
Pregunta 22
Pregunta
Each stands of DNA has [blank_start]3[blank_end]' End and [blank_start]2[blank_end]' End
Respuesta
-
3
-
2
Pregunta 23
Pregunta
DNA 3' end has exposed
Respuesta
-
OH group on 3' C of deoxyriose
-
OH group on 2'C deoxyriose
-
OH group on 5'C deoxyriose
-
OH group on 1'C deoxyriose
Pregunta 24
Pregunta
DNA 5' end has an exposed phosphate group on the
Respuesta
-
5' C Deoxyribose
-
2' C Deoxyribose
-
3' C Deoxyribose
-
4' C Deoxyribose
Pregunta 25
Pregunta
Nucleotide strands are complimentary due to
Respuesta
-
Twin Base rule
-
Twin paring rule
-
Base pairing rule
-
Odd Paring rule
Pregunta 26
Pregunta
Part A : Purine number ≠ pyrimidine number
Part B : A=T ; G=C
Respuesta
-
Part A and B are true
-
Part A is true and B is false
-
Part A is False and Part B is true
-
Part A and B are false
Pregunta 27
Pregunta
If Nucleotide sequence of one strand is known, sequence can be
Respuesta
-
Defined
-
Pridicted
-
Partly predicted
-
Never Defined
Pregunta 28
Pregunta
a.How many hydrogen bonds are present between Adenine and thymine.
b.How many hydrogen bonds are present between Guanine and cytosine.
Respuesta
-
2 and 6
-
2 and 3
-
3 and 5
-
2 and 5
Pregunta 29
Pregunta
Who confirmed the semi-conservative replication of DNA.
Respuesta
-
Francis
-
Meselson
-
Thomas
-
Marie
Pregunta 30
Pregunta
Double Helix produced during DNA replications consists of _____ parent strand(s) and _____new complementary strand(s)
Respuesta
-
1 and 2
-
2 and 2
-
1 and 1
-
2 and 3
Pregunta 31
Pregunta
Name the Following Hypothesis of DNA Replication
Respuesta
-
Semiconservative
-
Conservative
-
Dispersive
-
Semi Dispersive
-
Semiconservative
-
Conservative
-
Dispersive
-
Semidispersive
-
Semiconservative
-
Conservative
-
Disprative
-
Semidisorative
Pregunta 32
Pregunta
How does DNA replication prevent super-coiling.
Respuesta
-
By breaking and rejoining one DNA
-
By breaking and rejoining one DNA or Both
-
By breaking one DNA
-
By rejoining one both the DNA
Pregunta 33
Pregunta
_________________ relieve tension created by unwinding localized
areas of DNA
Respuesta
-
Topoisomerases
-
Toposomes
-
Catenation
-
Knotting
Pregunta 34
Pregunta
DNA replication is bidirectional
Respuesta
- True
- False
Pregunta 35
Pregunta
______________chromosomes have a single origin of replication ______________chromosomes have multiple origins of replication
Respuesta
-
Prokaryotic & Prokaryotic
-
Eukaryotic & Prokaryotic
-
Eukaryotic & Eukaryotic
-
Prokaryotic & Eukaryotic
Pregunta 36
Pregunta
Synthesis continues until adjacent replication forks meet
Respuesta
- True
- False
Pregunta 37
Respuesta
-
dcab
-
badc
-
abcd
-
cdab
Pregunta 38
Pregunta
Every living organism must get energy from food molecules that they make or obtain from environment
Respuesta
- True
- False
Pregunta 39
Pregunta
______________________ is a catabolic process where chemical bond energy of food molecules transferred to ATP
Respuesta
-
Cellular respiration
-
Molecular respiration
-
Intracellular respiration
-
Metabollic respiration
Pregunta 40
Pregunta
Most organisms use [blank_start]aerobic[blank_end] cellular respiration
Respuesta
-
aerobic
Pregunta 41
Pregunta
Food is broken down into [blank_start]Carbon dioxide[blank_end] and [blank_start]Water[blank_end]
Respuesta
-
Carbon dioxide
-
Carbon monoxide
-
Carbon Hydroxide
-
Water
-
Sodium
-
Nitrogen
Pregunta 42
Pregunta
How much ATP is produced per GULCOSE
Respuesta
-
36.38 ATP's
-
37.38 ATP's
-
32.38 ATP's
-
36.10 ATP's
Pregunta 43
Pregunta
What are the four Stages of Aerobic Respiration
Stage 1 : [blank_start]Glycolysis[blank_end]
Stage 2 : [blank_start]Formation of acetyl coenzymes[blank_end]
Stage 3 : [blank_start]Citric acid Cycle[blank_end]
Stage 4 : [blank_start]Chemioosmosis[blank_end]
Respuesta
-
Glycolysis
-
Lactic acid cycle
-
Formation of acetyl coenzymes
-
Formation of citric acid
-
Citric acid Cycle
-
Formation of acetyline
-
Chemioosmosis
-
Sulfur Excretion
Pregunta 44
Pregunta
Glycolysis occur in 3 phases
Respuesta
- True
- False
Pregunta 45
Pregunta
Define the equation " glucose + 2 ATP → 2 G3P + 2 ADP → 2G3P + 2NAD+ + 4ADP → 2 pyruvate + 2NADH + 4ATP "
Respuesta
-
Glycolsis
-
Citric Acid Cycle
-
Chemosmosis
-
Acetyle coencyme
Pregunta 46
Pregunta
What are the Net products of glycolysis
Respuesta
-
2 ATPs
-
5 ATPs
-
2 NADHs
-
1 NADHs
-
2 pyruvates
-
1 pyruvates
Pregunta 47
Pregunta
What are the Citric acid cycle products per glucose
Respuesta
-
6 NADH, 2 FADH2
-
5 NADH, 2 FADH2
-
2 ATP
-
3 ATP
-
4 CO2
-
3 CO2
Pregunta 48
Pregunta
Each Citrate begins a “cycle” of ______ subsequent
reactions,
Respuesta
-
Six
-
Seven
-
Three
-
Two
Pregunta 49
Respuesta
-
Acetyl Coenzyme A
-
Coenzyme
-
Citrate
-
Carbon Compound
-
Acetyl coenzyme
-
Citrate
-
4 carbon compound
-
Oxaloacetate
-
5 carbon compound
-
3 carbon compound
-
1 carbon compound
-
4 carbon compound
-
4 carbon bond
-
5 carbon bond
-
2 carbon bond
-
3 carbon bond
-
Oxaloacetate
-
4 carbon compound
-
citrate
-
5 carbon compound
Pregunta 50
Pregunta
Their high-energy electrons lose energy as they pass from
one electron acceptor molecule to another
Respuesta
- True
- False
Pregunta 51
Pregunta
Electron acceptors/carriers are usually transmembrane
proteins embedded in cristae
Respuesta
- True
- False
Pregunta 52
Pregunta
" Establishes proton gradient and Free energy released from electron transporting used to
pump H+ across cristae"
Best suits which one of the following
Respuesta
-
Oxidative Phosphorylation
-
Electron Transport Chain
-
Citric cycle
-
Acetyl
Pregunta 53
Pregunta
What does Electron Transport Chain mean ?
Respuesta
-
An electron transport chain is a series of complexes that transfer electrons from electron donors to electron acceptors via redox reactions, and couples this electron transfer with the transfer of protons across a membrane.
-
An electron transport chain is a series of complexes that transfer electrons from donors to electron acceptors via hypothermic reactions, and couples this proton transfer with the transfer of protons across a membrane.
-
An electron transport chain is a series of complexes that transfer electrons from electron donors to electron acceptors via endothermic reactions, and this electron transfer with the transfer of protons across a membrane.
-
An electron transport chain is a series of complexes that transfer electrons from electron donors to electron acceptors via Exothermic reactions, and couples this electron transfer with the transfer of protons across a membrane.
Pregunta 54
Pregunta
Can Amino acids be broken down to produce ATP ?
Respuesta
-
Maybe
-
Yes
-
No
-
None of the above
Pregunta 55
Respuesta
-
Amino Acid
-
Erepsin
-
Leucines
-
Nucleic acid sequence 1
Pregunta 56
Respuesta
-
Citric cycle
-
Dietary lipids
-
ECH
-
Glycolysis
Pregunta 57
Pregunta
Anaerobic Respiration Does use O2 as final electron acceptor
Respuesta
- True
- False
Pregunta 58
Pregunta
Anaerobic respiration uses [blank_start]inorganic[blank_end] substance as final electron acceptor during
electron transport chain
Respuesta
-
inorganic
Pregunta 59
Pregunta
Fermentation best suits
Respuesta
-
Anaerobic process that does not use electron transport chain
-
Does not use O2 as final electron acceptor
-
Uses inorganic substance as final electron acceptor during electron transport chain
-
Produces 5 ATP/glucose by substrate-level phosphorylation during glycolysis
Pregunta 60
Pregunta
Pyruvate is not end product of fermentation
Respuesta
- True
- False
Pregunta 61
Pregunta
NADH produced during glycolysis must not be converted back to NAD+ to allow glycolysis to continue
Respuesta
- True
- False
Pregunta 62
Pregunta
In ____________________ Pyruvate converted to 2-C ethyl alcohol (2-C) and CO2
Respuesta
-
Alcohol fermentation
-
Fermentation
-
Pyruvate fermentation
-
Anaerobic fermentation
Pregunta 63
Pregunta
Yeasts are facultative anaerobes Used in brewing
Respuesta
- True
- False
Pregunta 64
Pregunta
Does Bacteria & Virus use Lactate (lactic acid) fermentation
Respuesta
-
True
-
False
-
Bacteria uses but virus does not
-
Virius uses but bacteria does not
Pregunta 65
Pregunta
Is "Oxygen" needed for sustained activity in lactic fermentation
Respuesta
-
Yes
-
No
-
Yes but not necessarily needed
-
No but better to have it
Pregunta 66
Pregunta
Who is the father of heredity.
Respuesta
-
Gregor Mendel
-
Charles Darwin
-
Racheal Carlson
-
Robert hooke
Pregunta 67
Pregunta
When did Mendel Die?
Respuesta
-
1884
-
1885
-
1883
-
1880
Pregunta 68
Pregunta
What plant did mendel use for his expirmient
Respuesta
-
Cucumer
-
Pea
-
Carrot
-
Sun Flower
Pregunta 69
Pregunta
How many phenotypic traits did mendel study
Respuesta
-
Seven
-
Eight
-
Six
-
Five
Pregunta 70
Pregunta
Homologous chromosomes carry same genes, but can carry
different alleles of those genes
Respuesta
-
True
-
Partly True
-
False
-
None of the Aove
Pregunta 71
Pregunta
What is a Locus
Respuesta
-
Physical location where a gene resides on a chromosome
-
Physical location where a gene resides on a Nucleic acid
-
Physical location where a Amino acids resides on a chromosome
-
Physical location where a gene resides on a Metabolic cell
Pregunta 72
Pregunta
Which of the following is Not Mendel’s Principle of Segregation
Respuesta
-
Alleles separate during formation of reproductive cells
-
In F2 generation, fertilization involving two t gametes allowed short phenotype to reappear
-
Homologous chromosomes carry same genes
-
F1 generation gametes contained dominant tall allele (T) OR recessive short allele (t)
Pregunta 73
Pregunta
Understanding inheritance of single trait (locus) with two alleles
Respuesta
-
Mono Hybrid Cross
-
Theory of evolution
-
Dihybrid Cross
-
Genetic Terminology
Pregunta 74
Pregunta
Tracks inheritance of two traits, governed by genes on nonhomologous chromosomes
Respuesta
-
Dihybrid Cross
-
Mono hybrid cross
-
Theory of Evolution
-
Mendel's Experiment
Pregunta 75
Pregunta
In Dihybrid cross F1 individuals produce four gametes types with equal probability namely
Respuesta
-
BS, Bs, bS, bs
-
BS, Bs,BS, Bs,
-
bS, bs,BS, Bs,
-
Bs, Bs, bs, bs
Pregunta 76
Pregunta
In F2 generation Predictable phenotype ratio is
Respuesta
-
9:3:3:1
-
9:3:3:3
-
9:2:1:2
-
5:1:5:2
Pregunta 77
Pregunta
Which one is Not Mendel’s Principle of Independent Assortment
Respuesta
-
Alleles on nonhomologs distributed randomly into gametes,independently of one another
-
Random orientation of homologous chromosomes in metaphase II
-
In guinea pigs, assortment of B and b alleles not affected by assortment of S and s alleles
-
B allele equally likely to end up in a gamete with S or s allele
Pregunta 78
Pregunta
Thomas Hunt Morgan’s work with fruit flies Took place in ___________expanded genetics knowledge.
Respuesta
-
Early 1900
-
Early 1920
-
Late 1900
-
Late 1920
Pregunta 79
Pregunta
What are sex chromosomes?
Respuesta
-
Genes which largely determine gender in most eukaryotes
-
Genes which largely determine gender in most prokaryotes
-
Genetics which determine gender in some eukaryotes
-
Genetics which termine gender in most eukaryotes
Pregunta 80
Pregunta
In mammals, birds and many insects, sex-determining genes on sex chromosomes are
Respuesta
-
Female mammals XX Male mammals YY
-
Female mammals XY Male mammals YY
-
Female mammals YX Male mammals XX
-
Female mammals XX Male mammals XY
Pregunta 81
Pregunta
Sex determination in animals
[blank_start]X-Y[blank_end] system Mammals Including Humans
[blank_start]X-O[blank_end] system Certain Insects
[blank_start]Z-W[blank_end] system Birds, Fishes and some insects
[blank_start]Haplo-Diploid[blank_end] system Most bees and Ants
Respuesta
-
X-Y
-
X-K
-
Z-W
-
Z-H
-
X-T
-
X-W
-
X-O
-
X-I
-
X-X
-
Haplo-Diploid
-
X-A
-
X-N
Pregunta 82
Pregunta
During early [blank_start]embryonic[blank_end] development, random inactivation of
one X chromosome occurs in somatic cells
Respuesta
-
embryonic
Pregunta 83
Pregunta
If ___________ heterozygous is for X-linked trait, one allele expressed in half
of the body, other allele expressed in the other half
Respuesta
-
Male
-
Female
-
None of the above as it has not een devleoped
Pregunta 84
Pregunta
Cats carry one of their fur color genes on___chromosome
Respuesta
-
X
-
Y
-
H
-
XY
Pregunta 85
Pregunta
In which of the following a Heterozygote has intermediate phenotype
Respuesta
-
Mono Hybrid cross
-
Dihybrid Cross
-
Incomplete Dominence
-
Genectiic Variation
Pregunta 86
Pregunta
Heterozygote simultaneously expresses phenotype of both homozygotes relates to
Respuesta
-
Codominance
-
Monohybrid cross
-
Dihybrid cross
-
Incomplete Dominance
Pregunta 87
Pregunta
What is Pleiotropy?
Respuesta
-
Ability of one gene to affect multiple traits
-
Ability of one gene to affect two traits
-
Ability of one gene to affect one traits
-
Ability of one gene to affect no traits
Pregunta 88
Pregunta
Alleles from different loci interact to determine phenotype is GENE INTRACTION
Respuesta
- True
- False
Pregunta 89
Pregunta
Human skin color determined by 7 genes
Respuesta
- True
- False
Pregunta 90
Pregunta
Genetically identical individuals may develop differently in different environments
Respuesta
- True
- False
Pregunta 91
Pregunta
Human height is polygenic
Respuesta
- True
- False
Pregunta 92
Pregunta
_____________ is condensed chromatin
Respuesta
-
Chromosome
-
Telomeres
-
Keratin
-
Lipids
Pregunta 93
Respuesta
-
Nucleus
-
Nuclear pores
-
Nucleus Envelope
-
Chromatin
-
Nucleolus
-
Cisternae
Pregunta 94
Pregunta
1 nucleosome =_____ histone protein and _____ base pairs of DNA
Respuesta
-
8 and 142
-
7 and 146
-
6 and 142
-
8 and 146
Pregunta 95
Pregunta
What do you see in the picture given
Respuesta
-
DNA without Histones
-
DNA with Histones
-
Basic Structure of DNA
-
None of the above
Pregunta 96
Pregunta
What happens during Prophase ?
Respuesta
-
The nucleosome condenses into many tight small chromosomes
-
The nucleosome condenses into many loose small chromosomes
-
The nucleus decays into many tight small chromosomes
-
The nucleosome condenses into many tight large chromosomes
Pregunta 97
Pregunta
Bacterial chromosome have histone
Respuesta
- True
- False
Pregunta 98
Pregunta
Bacterial chromosome have histone
Respuesta
- True
- False
Pregunta 99
Pregunta
Which of the following answers best suit
>Epithelial cells undergo mitosis constantly >Mature blood cells don't divide > Stem cells in the bone marrow divide.
Respuesta
-
Eukaryotic Cell Cycle
-
Prokaryotic Cell Cycle
-
Citric Cycle
-
Lipids cell cycle
Pregunta 100
Pregunta
Cardiac muscles can change and grow new muscle but skeletal muscles cannot repair and remodel gradually.
Respuesta
- True
- False
Pregunta 101
Pregunta
What does Coenocytic means [blank_start]multinucleate[blank_end]
Respuesta
-
multinucleate
Pregunta 102
Pregunta
Interface
G1 phase ([blank_start]first gap[blank_end] phase)
• S phase ([blank_start]synthesis[blank_end] phase)
• G2 phase ([blank_start]second gap[blank_end] phase)
Respuesta
-
first gap
-
Synthesis phase
-
Synthesis
-
First Gap
-
Second Gap
-
Second Gap
-
Second gap
-
Synthesis
-
First Gap
Pregunta 103
Pregunta
What happens during S phase (synthesis phase)
Respuesta
-
Centrioles duplicated
-
Histone proteins synthesized
-
DNA replicates
-
Protein synthesis increases
-
Cell Grows and Prepares for S shape
Pregunta 104
Pregunta
Mitosis is a Continuous process of five stages
Respuesta
- True
- False
Pregunta 105
Pregunta
Order the stages of Mitosis
[blank_start]Prophase[blank_end] [blank_start]prometaphase[blank_end] [blank_start]metaphase[blank_end] [blank_start]anaphase[blank_end] [blank_start]telophase[blank_end]
Respuesta
-
Prophase
-
Prometaphase
-
Metaphase
-
Anaphase
-
Telophase
-
Prometaphase
-
Prophase
-
Metaphase
-
Anaphase
-
Telophase
-
Metaphase
-
Prophase
-
Prometaphase
-
Anaphase
-
Telophase
-
Anaphase
-
Prophase
-
Prometaphase
-
Metaphase
-
Telophase
-
Telophase
-
Anaphase
-
Metaphase
-
Prometaphase
-
Prophase
Pregunta 106
Pregunta
_______________ is a protein where the microtubules attach to the chromosomes.
Respuesta
-
Kinetochore
-
Lipids
-
Chromatids
-
Centromere
Pregunta 107
Pregunta
What happens during Prometaphase?
Respuesta
-
Nuclear envelope fragments
-
Cytoskeleton disassembled
-
Mitotic spindle begins to form
-
Cytoskeleton assembled
Pregunta 108
Pregunta
During Anaphase the sister chromatids separate
Respuesta
- True
- False
Pregunta 109
Respuesta
-
Interphase
-
Prophase
-
Prometaphase
-
Metaphase
-
Anaphase
-
Telophase
Pregunta 110
Pregunta
Prokaryotes use binary fission
Respuesta
- True
- False
Pregunta 111
Pregunta
Asexual reproduction in eukaryotes uses mitosis
Respuesta
- True
- False
Pregunta 112
Pregunta
Sexual reproduction in eukaryotes involves mitosis
Respuesta
- True
- False
Pregunta 113
Pregunta
Ploidy Contain only one member of each homologous chromosome pair
Respuesta
- True
- False
Pregunta 114
Pregunta
In plants, fungi and some protists, meiosis does directly yield haploid gametes
Respuesta
- True
- False
Pregunta 115
Pregunta
shorter wave lengths = less energy
Respuesta
- True
- False
Pregunta 116
Pregunta
Humans detect photons that correspond to UV portion of electromagnetic spectrum
Respuesta
- True
- False
Pregunta 117
Pregunta
Which one has the longest wavelength
Respuesta
-
Microwaves
-
Visible Light
-
X-rays
-
Gamma Rays
Pregunta 118
Pregunta
When certain types of molecules absorb____________, an electron becomes energized
Respuesta
-
Photons
-
Neutrons
-
Electrons
-
None
Pregunta 119
Pregunta
What is pigment of light
Respuesta
-
A molecule that can be exited by light
-
A molecule that can be destroyed by light
-
A molecule that can be split by light
-
A molecule that can be pigmented by light
Pregunta 120
Pregunta
____________________ cells have chloroplast, and they are the ones that perform photosynthesis.
Respuesta
-
Parenchyma
-
Lipids
-
Cellular
-
Respiratory
Pregunta 121
Pregunta
Chlorophylls a and b absorb ________ and _______ light
Respuesta
-
Green and blue
-
Blue and red
-
Red and green
-
Red and Yellow
Pregunta 122
Pregunta
Chlorophyll______ is primary photosynthetic pigment
Respuesta
-
a
-
b
-
ac
-
ab
Pregunta 123
Pregunta
Carotenoids absorb _______ and________ light
Respuesta
-
Blue and blue-green
-
Red and Yellow-green
-
Green and yellow-red
-
Blue and blue-red
Pregunta 124
Pregunta
Energy is transferred from pigment to pigment till it reaches chlorophyll " a ", and the wavelength is Decreased
Respuesta
- True
- False
Pregunta 125
Pregunta
Light energy is converted to chemical energy in [blank_start]Photosynthesis[blank_end]
Respuesta
-
Photosynthesis
Pregunta 126
Pregunta
Photosystem are made up of __________ and pigments.
Respuesta
-
Proteins
-
Carbon
-
Oxygen
-
Nitrogen
Pregunta 127
Pregunta
Photosystem I (P720) is one of the types of photostem
Respuesta
- True
- False
Pregunta 128
Pregunta
Light-Dependent Reactions Begin when pigment molecule absorbs photon
Respuesta
- True
- False
Pregunta 129
Pregunta
1 electron is donated from the reaction center chlorophyll " A " when the photon reaches the chlorophyll " A "pigment. So two electrons are produced in total and start an [blank_start]electron transport chain[blank_end].
Respuesta
-
electron transport chain
Pregunta 130
Pregunta
What does best suit Photophosphorylation?
Respuesta
-
During light-dependent reactions, synthesis of ATP coupled to transport of electrons originally energized by photons
-
During light-dependent reactions, synthesis of ATP coupled to transport of photons originally energized by Electrons
-
Electrons flow two at a time
-
Each Photophosphorylation has a reaction center
Pregunta 131
Pregunta
What is the use of Photoposporalation
Respuesta
-
Used to pump protons across thylakoid membrane from stroma to thylakoid lumen
-
Used to Absorb protons across thylakoid membrane Using stroma and thylakoid lumen
-
Used to Excrete Electrons across thylakoid membrane Using stroma and thylakoid lumen
-
Used to pump Protiens across thylakoid membrane from stroma to thylakoid lumen
Pregunta 132
Respuesta
-
Light-Dependent Reation
-
Nitrogen Fixation Reaction
-
Photophosphorylation Reaction
-
Carbon Fixation reaction
Pregunta 133
Pregunta
Calvin cycle occurs in [blank_start]stroma[blank_end]
Respuesta
-
stroma
Pregunta 134
Pregunta
Carbon Fixation Reactions are also known as C3 pathway
Respuesta
- True
- False
Pregunta 135
Pregunta
What are the three phases of carbon fixation
Respuesta
-
Carbon reduction phase
-
Nitrogen reduction phase
-
RuBP regeneration phase
-
RuBB regeneration phase
-
Carbon dioxide uptake Phase
-
Carbon uptake Phase
Pregunta 136
Pregunta
Carbon fixation requires CO2 and light (indirectly)
Respuesta
- True
- False
Pregunta 137
Pregunta
Some plants use C3 pathway to fix carbon prior to Calvin cycle
Respuesta
- True
- False
Pregunta 138
Pregunta
What does "CAM " in Pathway stand for
Respuesta
-
Crassulacean acid metabolism
-
Crassulacean angular metabolism
-
Crassulacean acid mitosis
-
Carbon acid metabolism
Pregunta 139
Pregunta
The sourses of genetic variation during miosios are:
Respuesta
-
They Result in Daughter cell
-
Crossing Over and Random Assortment of meternal and paternal homologs
-
Synapis and mutation
-
Crossing over and random pairing of tetrads
Pregunta 140
Pregunta
What is a dominant allele
Respuesta
-
Having two different Allele for a gene
-
Determines phenotype is hetrozygote
-
The Genetic Makup of a person
-
More Common In a population
Pregunta 141
Pregunta
A barr body in a mammalian female cell represents
Respuesta
-
Inactivated X Chromosome
-
Activate X Chromosome
-
A polor body
-
An inactivated oolycte
Pregunta 142
Pregunta
In snapdragons, heterozygotes for one of the genes have pink flowers, whereas homozygotes have red or white flowers. When plants with red flowers are crossed with plants with white flowers, what proportion of the offspring will have pink flowers?
Respuesta
-
25%
-
75%
-
50%
-
100%
Pregunta 143
Pregunta
when crossing an organism that is homozygous recessive for a single trait with a heterozygote what is the chance of producing an offspring with homozygous recessive phenotype
Respuesta
-
100%
-
50%
-
75%
-
25%
Pregunta 144
Pregunta
Black fur in mice (B) is dominant to brown fur (b). Short tails (T) are dominant to long tails (t). these two traits are unlinked what fraction of the progeny of the cross BbTt x BbTt will have black fur and long tails
Respuesta
-
1/2
-
3/4
-
9/16
-
3/16
Pregunta 145
Pregunta
The overall reactions of photosynthesis are best summarized as
Respuesta
-
6 CO2+ 12 H2O->C6H12O6 +12 O2
-
6 CO2+ 12 H2O->C6H12O6 +12 H2O
-
6 CO2+ 12 O2->C6H12O6 +12 H2O
-
6 CO2+ 12 O2+C6H12O6->12 O6 +12 H2O
Pregunta 146
Pregunta
During the electron transport chain h2o is formed where does the oxygen for the synthesis of h20 come from
Respuesta
-
O2
-
H2O
-
C6H1O2
-
Pvruvate
Pregunta 147
Pregunta
When one molecule of glucose is completely oxidized in aerobic respiration the net amount of atp produced is
Respuesta
-
36 to 38
-
2
-
28 to 36
-
4
Pregunta 148
Pregunta
In C4 plants reactions that fix co2 into four-carbon compounds occur in
Respuesta
-
Xylem cell
-
Bundle shealth cell
-
Mesophyll cell
-
Guard Cell
Pregunta 149
Pregunta
An animal with a diploid number of 36 will have______ chromosomes in its gamets and ______ tetrads during meiosis I
Respuesta
-
15 and 20
-
18 and 36
-
18 and 18
-
17 and 18
Pregunta 150
Pregunta
During chemiosmosis,_____ are transferred from NADH and FADH2 to electron acceptor molecules, and the energy released is used to create a ____ gradient across the inner mitochondrial membrane.
Respuesta
-
Electron and neutron
-
Protons and Neutons
-
Electrons and protons
-
Neutrons and protons
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