Questions and answers by

Debbie Clarke

Questions (113)

Write a paper on Down Syndrome, no more than 3 pages
1. 1 answer
2. 118 views
Write a paper on Down syndrome , no less than three papers
1. 1 answer
2. 105 views
Information on HDL and LDL synthesis
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2. 115 views
Information about HDL and LDL synthesis
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2. 118 views
Paper on HDL and LDL synthesis
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2. 128 views
RNA processing involves which of the following processes?Poly-A tail addition Capping Splicing All of the above
1. 13 answers
2. 175 views
A way to get more than one protein product out of the same gene is?Skipping splicing Alternate splicing Intron splicing All of
1. 13 answers
2. 143 views
The genetic code is __________.Degenerate Unambiguous Non-overlapping All of the above
1. 17 answers
2. 140 views
Cholecalciferol deficiency results in ________________.Rickets Osteomalacia Both a and b None of the above
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Glycosyl phosphatidylinositol (GPI) anchors _____________ to the __________________.Cholesterol; carbohydrates Protein;
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2. 140 views
Aquaporins facilitate the passage of ________across the plasma membrane.Glucose Water Sodium Potassium
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2. 86 views
HDL has high amounts of apoprotein.True False
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2. 105 views
Using Figure 1, determine the amino acid sequence of the resulting polypeptide sequence, ATG TAT GCG CTC CTT CCC.Met-Phe-Ala-Leu
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The resulting neural tube and brain defects from which of the following vitamins makes it especially important in prenatal care?
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The phospholipid effectively forms lipid bilayers and vesicles because of which of the following?The association of the
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2. 132 views
Polyploidy in plants is considered as “good mutations” by agricultural breeders because:They have extra sets of chromosomes.
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2. 99 views
Fatty fish, like salmon, and nuts are foods that increase the blood levels of LDL.True False
1. 1 answer
2. 114 views
Symptoms of scurvy include which of the following?Gingivitis Muscle weakness Joint aches All of the above
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2. 113 views
The template DNA chain for RNA synthesis has the following order of bases, AGCTTCGAT. What will be the order of bases in the
1. 1 answer
2. 109 views
Which of the following results from the action of phospholipase A on phosphatidic acid?Diacylglycerol
1. 1 answer
2. 129 views
What happens during the denaturation step of PCR?The DNA nucleotides are broken apart. The DNA returns to its natural form. The
1. 2 answers
2. 170 views
Which of the following minerals may be found in nuts?Chromium Magnesium Copper All of the above
1. 1 answer
2. 109 views
Waxes are ____________________.Esters of long-chain alcohols with long-chain fatty acids Ethers of long-chain alcohols with
1. 1 answer
2. 142 views
During replication, Okazaki fragments elongate _____________________.Leading strand towards the replication fork Lagging strand
1. 2 answers
2. 144 views
Deficiency of which of the following vitamins causes slow blood coagulation?Vitamin B Vitamin K Vitamin C Vitamin D
1. 1 answer
2. 191 views
Phospho-regulation functions in which process?Apoptosis Signal transduction Growth and cell cycle progression All of the above
1. 1 answer
2. 106 views
Which of the following enzymes separates the two strands of DNA during replication?Gyrase Topoisomerase Helicase DNA polymerase
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2. 202 views
__________________ is a trace element?Calcium Magnesium Chloride Manganese
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2. 86 views
Most colour-blindness is sex-linked because of which of the following?The presence of pigment genes on the X-chromosome The
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2. 160 views
Kinases are enzymes that ____________________.Transfer phosphate groups to macromolecules Remove phosphate groups from
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2. 175 views
Which of the following statements is true?The fully demethylated head of a-tocopherol increases its activity. The fully
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2. 124 views
Which site of tRNA molecule hydrogen bonds to a mRNA molecule.Codon Anticodon 5’ ends of the tRNA molecule 3’ ends of the
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2. 148 views
The AUG start codon codes for which of the following amino acids?Methionine Valine Phenylalanine Glycine
1. 1 answer
2. 136 views
Vitamin D helps in the absorption of which of the following elements?Iodine and Calcium Iron and Iodine Calcium and Iron Calcium
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2. 126 views
RNA polymerase I may be found in the ____________________.Nucleolus Nucleoplasm Cytoplasm All of the above
1. 1 answer
2. 120 views
Describe the gene and chromosomes mutation that can occurs in DNA
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2. 124 views
Chose a vitamin. Outline the structure, source , function and deficiency associated with this vitamin
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2. 112 views
Give the result of a deficiency of one mineral
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2. 105 views
What are trace elements? Give one source
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2. 125 views
What are the major minerals? Give one source
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2. 96 views
Give the base pairs found in DNA?
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2. 103 views
Define DNA and RNA and give two differences between them?
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2. 92 views
What are nucleic acids?
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2. 102 views
What are cyclic nucleotides?
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What are the three components of a nucleotide
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2. 98 views
Name two head group found in glycerophosphalipids
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2. 98 views
What is the significance of the glycerol backbone in the glycerophosphalipids?
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2. 142 views
What is the head group found in cardiolipin?
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2. 100 views
To which part of the glycerol- based phospholipid are the different head groups attached?
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2. 102 views
What is the name of the parent compound for the glycerol-based phospholipids?
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2. 110 views
Describe the subdivisions of prophase of meiosis I. Give named and diagrammed examples for the structures that may be present in
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2. 128 views
What are the expected phenotypic ratios from the following cross:Tt Rr YY Aa × Tt rr Yy Aa, where T = tall, t = dwarf, R =
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2. 135 views
What are the expected phenotypic ratios from the following cross:Tt Rr YY Aa × Tt rr Yy Aa, where T = tall, t = dwarf, R =
1. 3 answers
2. 161 views
In the chinchilla, albino coat color is a recessive trait. Researchers transplanted ovaries from an albino female chinchilla
1. 1 answer
2. 140 views
In humans, the allele for brown eye color (B) is dominant to blue eye color (b). If two heterozygous parents produce seven
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2. 158 views
In corn, purple kernels (D) are dominant over yellow (d) and smooth kernels (G) are dominant over shrunken (g). and ear of corn
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2. 121 views
What are the expected phenotypic ratios from the following cross:Tt Rr YY Aa × Tt rr Yy Aa, where T = tall, t = dwarf, R =
1. 1 answer
2. 137 views
mtDNA and cpDNA is associated with the study of _________ inheritance.extranuclear epigenetic Mendelian Darwinian Nuclear
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2. 128 views
A human XXXY cell would contain how many Barr bodies?0 1 2 3 4
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Embryonic stem cells (ESC) are ______________.totipotent multipotent unipotent pluripotent none of the above
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What two mechanisms are responsible for the development of Trisomy 21?Translocation and duplication Inversion and nondisjunction
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2. 141 views
The transfer of genetic material between two different species is called __________.vertical gene transfer horizontal gene
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2. 180 views
In which of the following do the bacteria have to be in physical contact for gene transfer to occur?Transduction Transformation
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One map unit is equal to which of the following?100 nucleotides 1% of the chromosome 1% mutation rate 1% recombination rate None
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The synaptonemal complex is formed during ____________.Leptotene Prophase II Telophase I Prophase I None of the above
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2. 81 views
When testing for linkage using a chi-square analysis, what should be the hypothesis?That the traits are linked. That the traits
1. 1 answer
2. 165 views
Single-stranded unpaired DNA extensions formed by endonucleases upon cleavage are known as _______________.Sticky ends. Blunt
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2. 172 views
Positive interference on a chromosome is best defined as:The repression of recombination during mitosis. The inhibition of one
1. 1 answer
2. 148 views
A trait that is only expressed on the sex chromosome is known as _________.temperature-sensitive alleles sex-influenced
1. 3 answers
2. 182 views
Which process may be used in gene mapping?Transformation Transduction Conjugation A and B B and C
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Coat colour in rabbits and human blood groups are both examples of ____________.multiple allele systems epistatic interactions
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2. 130 views
Which of the following statements is NOT true about genomic imprinting?It is re-established in germ cells It is established
1. 1 answer
2. 144 views
What happens during the denaturation step of PCR?The DNA nucleotides are broken apart. The DNA returns to its natural form. The
1. 1 answer
2. 201 views
In which of the following is the male of the species the homogametic sex?X-Y system Z-W system X-O system Haplodiploid system
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2. 88 views
Bacteria reproduce by ___________.Mitosis Meiosis Binary fission Reductive division All of the above
1. 1 answer
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Genetic drift refers to changes in allele frequencies in a population due to _________.Stabilization. Random fluctuations.
1. 1 answer
2. 108 views
A reciprocal cross is used to determine which of the following?If a trait is autosomal or sex-linked The number of autosomal
1. 1 answer
2. 162 views
A testcross is always conducted between an individual whose genotype is unknown and which of the following?A heterozygous
1. 1 answer
2. 173 views
If an organism contains two identical alleles for the same trait, it is said to be which of the following?Cross-fertilized
1. 1 answer
2. 114 views
In a Chi square test of a genetic cross there are n different phenotypic classes in the offspring. What is the value for the
1. 1 answer
2. 120 views
Which of the following is the most likely explanation for a high rate of crossing-over between two genes?The two genes are far
1. 1 answer
2. 194 views
Which of the following methods of calculating probability is used if the order of a specific number of events occurring in the
1. 5 answers
2. 204 views
The basic unit of heredity is called the _____________.protein trait gene enzyme nucleotide
1. 1 answer
2. 112 views
The DNA sequence recognized by an endonuclease is called a(n) ____________.Ligation site Insertion site Cleavage site
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2. 223 views
Which of the following best describes the term genetic variation?Differences in inherited traits within individuals of a
1. 1 answer
2. 152 views
Which type of change in chromosome structure is most likely to be detrimental?Deletions. Inversions molecular genetics.
1. 1 answer
2. 121 views
The primary advantage of sexual reproduction is:It maintains the chromosome number for the species. It is necessary to protect
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2. 137 views
The primary advantage of sexual reproduction is:It maintains the chromosome number for the species. It is necessary to protect
1. 1 answer
2. 139 views
Explain the heterozygote advantage of the sickle cell β-globin allele in areas where malaria is prevalent
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2. 114 views
What is extranuclear inheritance? Describe three examples. Explain the variegated phenotype in Mirabilis jalapa (four-o- clock
1. 1 answer
2. 192 views
You want to clone the mouse β-globin gene into an expression vector. Outline the steps you would take to insert this gene into
1. 1 answer
2. 138 views
In an East Indian mango, three genes are linked on the same chromosome. Heavy bloom is dominant to light bloom, skin that is
1. 1 answer
2. 285 views
An individual has the following reciprocal translocation:a. What would be the outcome of alternate segregation? b.What would be
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2. 134 views
An individual has the following reciprocal translocation:What is the name of the structure formed during meiosis, as the
1. 1 answer
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The basic diploid chromosome number in Chrysanthemum is 18. A new species of Chrysanthemum is found that has four complete sets
1. 29 answers
2. 212 views
Which of the following is not true about inversion?Inverted chromosomes are generally viable Inversion can cause chromosome
1. 1 answer
2. 221 views
In maternal effect, the individual's phenotype ___________.is determined by its genotype is determined by the mother's phenotype
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Consider this sequence A—•—B —C—D—E—F, be a DNA sequence where • is the centromere. Which of the following will
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A chromosome with a very short arm and a very long arm is referred to asa.Metacentric b.Telocentric c.Acrocentric
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________ genomes consist of multiple sets of chromosomes from multiple species.a.Monoploid b.Autopolyploid c.Polyploid d.
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2. 109 views