Recent activity by RosalindaKea

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How can Chemistry students better equip themselves with skills necessary for success in chemistry-related careers?

answered 23 hours ago in Chemical education

1 answer 40 views

Here's a specific problem related to DNA-protein interactions and regulation for a chemistry student to solve:How does the binding affinity of a transcription factor to DNA affect gene expression? Investigate the factors that influence this interaction using experimental data and molecular modeling techniques. Specifically, determine how changes in concentration, temperature, pH, and DNA sequence impact the stability and specificity of the protein-DNA complex. Based on your findings, propose potential strategies for regulating gene expression through targeted modulation of transcription factor-DNA interactions.

answered 1 day ago in BioChemistry

1 answer 42 views

What is the effect of increasing pressure on the equilibrium position for the following reaction: 2SO2(g) + O2(g) ⇌ 2SO3(g) Assuming the reaction is at equilibrium, how would the concentrations of SO2, O2, and SO3 be affected by increasing the pressure of the system?

answered 6 days ago in Chemical equilibrium

1 answer 70 views

What is the composition of a given protein sample and its relative abundance using electrophoresis analysis?

answered 6 days ago in Analytical Chemistry

1 answer 53 views

A student wants to determine the amount of chloride ions present in a sample of seawater. Using potentiometry, what is the concentration of chloride ions present in the sample?

answered Jan 22 in Analytical Chemistry

1 answer 52 views

A student is given a concentration of 0.1 M of CuSO4 and 0.2 M of AgNO3, and is asked to calculate the total resistance of an electrochemical cell with electrodes made of these two solutions separated by a salt bridge. The standard reduction potentials for Cu and Ag are +0.34 V and +0.80 V, respectively. Calculate the total resistance of the cell at 25°C assuming that the cell has a thickness of 1 cm and a cross-sectional area of 10 cm².

answered Jan 22 in ElectroChemistry

1 answer 39 views

A chemical engineering company has a mixture of ethanol and water with a concentration of 30% ethanol to separate using a distillation column. The company needs to obtain a concentration of 80% ethanol in the distillate at a reflux ratio of 3. Calculate the number of theoretical plates required in the column for the separation, assuming no vapor or liquid bypass, and that the minimum vapor velocity is maintained.

asked Jan 22 in Chemical engineering

1 answer 46 views

What is cognitive-behavioral therapy CBT ?

answered Jan 17 in Psychology

1 answer 44 views

According to the biological theory, what is the role of the hypothalamic-pituitary-adrenal axis in anxiety?

asked Jan 17 in Psychology

1 answer 24 views

Where might a cognitive psychologist look for the cause of depression?

asked Jan 17 in Psychology

1 answer 43 views

According to the James-Lange theory, what is the relationship between emotions and bodily reactions?

asked Jan 15 in Psychology

1 answer 25 views

When did Alfred Adler develop individual psychology?

answered Jan 15 in Psychology

1 answer 43 views

What is the name of the behaviourist who proposed the principles of operant conditioning?

answered Jan 13 in Psychology

1 answer 20 views

Who developed the psychoanalytic theory?

asked Jan 13 in Psychology

1 answer 17 views

The burning of charcoal is what type of reaction?

answered Dec 31, 2024 in Science

1 answer 63 views

Researchers have identified the receptor proteins for all of the tastes except which?

answered Dec 27, 2024 in Science

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