1.
a Explain why all cells in an organism are genetically equivalent, but may vary in phenotype.
b) Explain why the same genotype does not always produce the same phenotype and why the same phenotype can be the result of different genotypes.
c) For a cell that is right after DNA replication, where 2n=6. How many molecules of DNA are there?
d) How many chromosomes are there?
e) How many homologous pairs are there? How many unique chromosomes are there?
Thank you very much
In: Biology
5 ml of a 50% solution of detergent was diluted with water to a final volume of 200 ml. What is the final concentration (%) of detergent?
In: Biology
In: Biology
Create a chart comparing and contrasting the replication strategies of DNA viruses, RNA viruses, and reverse-transcribing viruses.
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Describe the composition and function of a typical CRISPR system of bacteria
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Draw Metaphase in a) mitosis b) meiosis I c ) meiosis II for an organism that is 2n=8. Be accurate in your depiction of the chromosomes.
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Place the events listed below in the correct chronological order for protein synthesis.
A protein is produced
Genome in nucleus
Ribosome adds an amino acid to a growing amino acid chain
Gene copied as mRNA
tRNA anticodon binds to mRNA codon
mRNA joins ribosome
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Which of these does not characterize telomerase? A. A ribonucleoprotein B. A reverse transciptase C. Contains an RNA molecule D. Highly active in somatic cells E. None of these
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A population has the following genotypic distribution: 10AA 15Aa 25aa. Based on your calculated allele frequencies, how many individuals would you expect to be homozygous dominant (=AA) if the population is in H-W equilibrium? Based on your calculated allele frequencies, how many individuals would you expect to be heterozygous (=Aa) if the population is in H-W equilibrium? Based on your calculated allele frequencies, how many individuals would you expect to be homozygous recessive (=aa) if the population is in H-W equilibrium?Is this population in H-W equilibrium? Is it evolving?
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In the classic set of "blender" experiments by Hershey and Chase, which of the following were observed?
A. Radioactive sulphur (S35) was detected with the bacteria.
B. Radioactive phosphorus (P32) was detected with the bacteriophage ghosts.
C. Both S35 and P32 were detected with the bacteriophage ghosts.
D. Both S35 and P32 were detected with the bacteria.
E. None of these.
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Bacterial cell structures worksheet
Structure |
Function |
All/most/some bacteria |
Glycocalyx (capsule) |
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Flagella |
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Fimbrae/pili |
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Sex pilus |
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Cell wall of peptidoglycan |
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Cell membrane (plasma membrane) |
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Nucleoid |
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Ribosome |
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Cytoplasm |
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the following two questions are related to these two articles:
1) Pseuderanthemum palatiferum leaf extract inhibits the proinflammatory cytokines, TNF-a and IL-6 expression in LPS-activated macrophages.
Sittisart P, Chitsomboon B, Kaminski NE
2)Early Weaning Stress in Pigs Impairs Innate Mucosal Immune Responses to Enterotoxigenic E. coli Challenge and Exacerbates Intestinal Injury and Clinical Disease
McLamb B, Gibson A,Overman E, Stahl C and Moeser A
Question 1: Summarize research studies using simple equations and graphs to represent experimental design and results
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