Food security is a complex phenomenon that exhibits itself in numerous conditions resulting from multiple causes.’ Discuss

How many structures can you find to use as a starting dataset if you wanted to study how proteins interact with DNA. Assume that you will require only high resolution structures for the study (at least 2.5 Angstroms resolution). For the study, you plan to use structures that were only solved by X-ray crystallography. (Select the closest number if the exact number is not available) *

between 1000-1500

between 2700 - 4000

172

371

between 450 - 950

What is the UniProtKB? *

The UniProt Knowledgebase (UniProtKB) is the central hub for the collection of functional information on proteins, with accurate, consistent and rich annotation.

The UniProt Knowledgebase (UniProtKB) is the universal protein information center.

The UniProtKB is a database of unique protein sequences.

The UniProtKB is a database of conserved protein sequences.

The UniProtKB is a database of protein 3D structures using the Cartesian coordinate format.

Retrieve the database entry for the protein BPSL1549 from the GenBank database. What organism is the protein from? *

Burkholderia pseudomallei

Pseudomonas aeruginosa

Vibrio cholera

Burkholderia mallei

E. coli

Search the GenBank database for the database entry with the following accession number: MN908947. Select from the list below answers that are TRUE statements pertaining to that database entry. *

It is a nucleotide sequence composed of ~29,903 bp

The data is a genome sequence.

The data is the genome sequence of SARS-CoV-2

The data entry is from the order Nidovirales.

The data entry is from the order Coronavirales

The genome sequence was reported by Wuhan et al in the journalNature, 579, published in 2020.

The genome was isolated from patients who had suffered severe breathing difficulties that in some cases were fatal.

The organism caused a bacterial pneumonia that presented as a severe and acute respiratory symptoms.

The sequence was deposited into the GenBank database on 18 May 2020 and is the newest version of the COVID-19 sequence available.

Using the INTERRNA database (mfrlab.org/interrna/); how many T-loop base motifs (patterns) can be found in the structure of the ribosomal RNA subunit with the PDB code 1ffk? *

6

1233

8

33

14

When one action potential is traveling along an unmyelinated axon from cell body side and another action potential is traveling along the axon from synaptic terminal side, these two action potentials are going to collide with each other at the center of the axon. What is going to happen to these action potentials after the collision?

1. which of the following volumes cannot be recorded using a spirometer?
a. RV
b. ERV
c. TLC
d. all of the above.

2. a client weighs 90kg. His tidal volume average
a. 160 ml
b. 200 ml
c. 150 ml
d. none of the above

3. The FRC is approximately
a. 2.3 liters
b. 500 ml
c. 6 liters
d. 12 liters

4. The residual volume is approximately
a. 2.3 liters
b. 500 ml
c. 6 liters
d. 1.2 liters.

List five (5) prokaryotic enzymes or proteins and their corresponding eukaryotic enzymes or proteins that carry out the same function during DNA replication. Provide the function for each of the enzymes.

Part A - Short Answer

If tryptophan (trp) codons containing two trp codons in its leader region were mutated to serine (ser) codons, then a high level of expression of the mutated operon would be visible ONLY if trp and ser were absent at the same time from the media. Explain why this occurs.

Part B - Multiple Choice

Circle the correct relationship between the trp operon and the repressor.

• The repressor acts in 'cis'.
• The repressor protein is responsible for the formation of the "termination" stem loop.
• Binding of the repressor protein leads to attenuation of the trp operon.
•   The presence of tryptophan results in increased expression of the tryptophan gene
• When bound to tryptophan, the repressor is able to bind the operator of the trp operon

Part C - Multiple Choice

Before transcription of the lac operon can commence, RNA polymerase must strongly bind to the promoter. Circle the correct statement as to why this occurs.

• lacI+ is mutated to lacI-
• a CAP-cAMP complex binds to the CAP site in the promoter in the absence of glucose.
• CAP binds to the CAP site in the promoter in the presence of glucose.
• catabolite repression occurs in the presence of glucose.
• catabolite repression occurs in the absence of glucose.

The biological oxidation of Fe2+ in mine drainage waters can result in red discoloration in steams from subsequent Fe3+ precipitation

(a) Name the type of organism responsible for this process

(b) Is this reaction spontaneous? Show calculations to justify your answer

(c) Write a balanced overall equation for biological of Fe2+, assuming fs(max) and the presence of ammonia

(d) How many grams of oxygen are required per gram of Fe2+ oxidized?

plz let me know the detailed procedure especially (c)

Describe the four-species symbiosis in leafcutter ants.

What are four mechanisms of vegetative reproduction, for example, tubers

What factors influence the virulence (harmfulness) of cholera?

1.How does mode of transmission shape virulence?

2. What species of fungus is being developed as a biopesticide against malarial mosquitos, and why might it be more effective than chemical insecticides?

Discuss in detail the structural features of transcription factors and how these features relate to function.

Outline the forces driving variation in allele, gamete, or haplotype frequencies in
populations and illustrate one or more with two examples involving human genetic
disorders

write 500 words