BIOLOGY COLLEGE

Explain competing theories about the formation of Earth's oceans.

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Answer 1

Answer:

Answer:

1. volcanic and rock outgassing of the early Earth

2. comet impacts during the "heavy-bombardment period"

Explanation:Hope This Helps:)

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Based on your knowledge of ocean chemistry, predict the feeding mode and size of organisms found in the deep layers of the ocean, and select the best explanation.

For the following biomolecular interactions, choose the main weak force interactions that mediates them. Interaction between hydrophobic (nonpolar) amino acid side chains van der Waals interaction
Repulsion between negatively charged backbone of DNA double helix van der Waals interaction
Interaction between water and carbonyl oxygen of guanine hydrogen bond

Answers

Answer:

Interaction between hydrophobic (nonpolar) amino acid side chains is due to hydrophobic interactions.

Repulsion between negatively charged backbone of DNA double helix is due to electrostatic repulsion forces.

Interaction between water and carbonyl oxygen of guanine is due hydrogen bonding

Explanation:

The hydrophobic effect refers to the tendency of non-polar substances forms aggregates in an aqueous solutions in order to avoid interactions with water molecules. This results in a favorable entropy increase.

For non-polar amino acids, hydrophobic interactions are important in stabilizing their structure wherein they are densely packed within the core of a protein while those with with polar groups are found in the exterior.

The phosphate backbone of DNA is negatively charged. Since like charges repel, therefore, electrostatic repulsion forces of the ions are responsible the repulsion of the backbone DNA double helix.

Hydrogen bonds are formed between electronegative oxygen atoms and hydrogen atoms of neighboring molecules due to the partial negative and positive charges on each of the atoms.

This hydrogen bonding is responsible for the interaction between water and carbonyl oxygen of guanine as the hydrogen atoms of the water molecules are attracted to the oxygen atoms of the guanine molecules due to the partial charges on each of the atoms.

A critical need of society is one that is

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People who respect critical thinking make up a critical society, and a critical need is anything that is urgent or necessary.

What is critical need of society?

Critical sociology aims to deconstruct old social power structures through analyzing texts, artworks, and other forms of media.

This is distinct from other sociological approaches, which frequently emphasize description over criticism.

Social workers must be able to assess each situation impartially by gathering data through observations, interviews, and research.

Social workers can make educated judgments, find the greatest resources, and create the best plans to assist clients by thinking critically and without bias.

Promoting critical thinking is crucial, and doing so through the eyes of cognitive science paints a clearer picture of what proponents for critical thinking are actually attempting to advance.

Therefore, a critical need of society is one that is urgent or necessary.

Learn more about critical society here:

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Answer:

Urgent

Explanation:

A critical need is one that is urgent or necessary.

The diagram below shows

Answers

Answer:

Nothing. There is absolutely nothing

Explanation:

In which of the following circumstances may animal work begin before receipt of IACUC approval? A. It is a continuing study awaiting three year renewal and for which the renewal protocol has been submitted to the IACUC.
B. It is a small pilot study on non-AWAR species.
C. It is a teaching activity that uses students' personally owned dogs and cats.
D. There are no circumstances in which animal work may begin before IACUC approval.

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Answer: the correct option is D (There are no circumstances in which animal work may begin before IACUC approval)

Explanation:

The IACUC known as Institutional Animal Care and Use Committees is a local working group that research facilities must appoint in accordance with the Animal Welfare Act , Policy on Human Care and Use of Laboratory Animals. It was introduced to research system by the U.S. government in 1986. The policy protects all warm-blooded animals except rats, mice, and birds bred for research. For an institution to use a specie that is covered by the policy, it must obtain their approval before work begins. I hope this helps. Thanks.

1. What is the equation for the equilibrium constant, Keq, for the following general reaction: aA + bB → cC + dD Define each term in the equation. 2. What is the actual free energy change of the reaction above? Again, define each term in the equation. Express this equation in terms of mass action Q
3. What is the standard free energy change of the reaction above? Again, define each term.

Answers

Answer:

Explanation:

From the reaction ; aA + bB → cC + dD

1) Keq = equilibrium constant = [A]^a [B]^b / [C]^c [D]^d

where [A] = [B] = [C] = [D] are the concentrations of reactants A, B, C and D respectively.

2) What is the actual free energy change of the reaction above? ;

ΔG is the differences between the sum of the free energies of the product and the reactant.

Mathematically; ΔG = (cΔGC + dΔGD) - ( aΔGA + bΔGB)

ΔG, in terms of reaction quotient ; ΔG = ΔG(standard) + RT lnQ

where R = gas constant and T = temperature.

3) What is the standard free energy change of the reaction above;

ΔG(Reaction) = Summation ΔGf(products) - summation ΔGf(reactants)

where summation ΔGf = standard free energy of formation

Rosiglitazone is an antidiabetic drug meant to target adipose cells, enhancing insulin effects. The drug mimics the fatty acid metabolites that bind to a nuclear receptor found mostly in fat, liver, and a few other tissues. Cortisone is a type of glucocorticoid mimic that binds to a nuclear receptor, activating the receptor's transcriptional regulatory function. The ligand-activated receptor binds coregulatory proteins, and the protein complex targets gene transcription involved with inflammation. Which of the following statements about these two drugs best describe their mechanism of action? Choose one or more: A. Rosiglitazone will bind to its receptor (peroxisome proliferator-activated receptor), and the receptor- B. Zinc fingers bind at the top of rosiglitazone receptor dimers as a stabilizer, allowing the alpha helical C. Receptor dimers with bound cortisone bind to the DNA target using a zinc finger to bind to an inverted D. Cortisone and rosiglitazone form heterodimers with the receptor in a head-to-tail fashion to regulate ligand complex can bind to the RXR receptor in a head-to-tail fashion. recognition strand to bind into the minor groove of the target DNA. repeat that must be at least partially palindromic to be recognized. gene activity.