You will use A, B, and O for these questions to represent the alleles in this example.

The ABO blood system works in a Mendelian fashion, but has 3 possible alleles at one locus (A, B, and O alleles). Each person can have only 2 of those alleles in their genotype. A and B are both dominant (and so can be co-dominant), and O is recessive to both A and B. So, for example, if you have B blood type, your genotype could be either BB or BO -- both of those genotypes would yield B phenotype. If your phenotype is AB blood type, then your genotype is AB.

Given the following scenario determine the genotypes of all these individuals. (Hint: What can the offspring tell you about the parents?)

You have a mother who has two children. There are two men who might need to pay child support; we need to figure out which man owes. Who is the father of these two children?

Mother: blood type A

Child 1: blood type O

Child 2: blood type A

Possible father 1: blood type A

Possible father 2: blood type O

List all possible genotypes for each of these individuals (mother, 2 children, 2 men).

Based on this information, is it possible to exclude either of these men as being the father? Why or why not

Match the following neurotransmitter receptor subtype to the ligand, and properties

Alpha 1, D2, AMPA, CB1, CB2, GABAa, mu opioid, 5HT3, alpha 2, kappa opioid, D1, 5HT1A, GABAb, NMDA

• Binds dopamine with high affinity, producing slow hyperpolarization through decreasing cAMP

• Binds dopamine with low affinity, producing slow repolarization through increasing cAMP

• Binds norepinephrine with low affinity producing slow depolarization through increasing intracellular cAMP

• Binds serotonin, opening ligand gated channel, producing a fast PSP

• Binds serotonin, often found presynaptically acting as auto receptor slowing neurotransmitter release, due to decreased cAMP which closes voltage gated calcium channels

• Ionotropic receptor acting as Cl- channel that increases ion influx in presence of both GABA and depressant drugs like anxiolytics

• Metabotropic receptor producing a slow hyperpolarization when bound to GABA

• Ionotropic receptor ligand gated by glutamate and glycine; also Mg+ blocking channel so require ligands+ simultaneous membrane depolarization to allow Ca++ influx

• Ionotropic receptor ligand gated by glutamate, allowing passage of Na+. This produces most fast EPSPs from glutamate binding

• Binds 2-AG with high affinity, anandamide is a partial agonist, heavily expressed in CNS, found presynaptically, Gi-coupled

• Found on microglia and in periphery on immune cells, Gi-coupled associated with controlling (limiting) cytokine release

• Gi-coupled, ligand activated by dynorphin, found on presynaptic VTA terminals, when activated will decrease DA release from VTA terminals

• Gi-coupled, ligand activated by beta-endorphin, found on presynaptic GABA terminals projecting to VTA, when activated will disinhibit VTA, increasing DA release from VTA

Some relatively mild illnesses, like the common cold, return to infect you again and again. For a while, right after you recover from a cold, you are immune. But that doesn’t last; after some weeks or months, depending on the illness, you become susceptible again. This means there is now a flow from the recovered population to the susceptible. These exercises ask you to modify the basic S-I-R model to describe an illness where immunity is temporary.

c. We saw in the text that the model for an illness that confers permanent immunity has a threshold value for S in the sense that when S is above the threshold, I increases, but when it is below, I decreases. Does this model have the same feature? If so, what is the threshold value?

Choose one of the four forms of cell signaling and describe it in detail using examples.   Relate the development of such systems with the evolution of multicellularity and apply this to an explanation of why this would be advantageous in complex organisms.

Discuss similarities and differences between C3, C4, and CAM plants using examples of each. How does the environment each type is found in relate to their respective differences in photosynthesis?

How is DNA protected from spontaneous and environmental damage, and how is damage, once inflicted, reversed?

During which stage of the viral life cycle would viral capsid proteins be manufactured?

A. Assembly

B. Biosynthesis

C. Release

D. Entry

6) What are some density dependent and some density independent factors that could together determine the carrying capacity of a species? Be sure in your answer you make it clear which factors are density dependent and which are density independent.

_______________________ are stripped from the intermediate organic molecules of the Krebs Cycle.

carbon and hydrogen atoms

oxygen and electrons

H+ and electrons

ATP and NAD

In aerobic respiration NADH and FADH2 are oxidized back into NAD⁺ and FAD by

glycolysis.

the Krebs Cycle.

the electron transport chain.

fermentation.

Two ATP are used to add two phosphate groups to glucose in the

Krebs Cycle.

electron transport chain.

glycolysis.

bridge step.

ATP and ________________ is/are the product(s) from the Krebs Cycle.

NADH

FADH2 and NADH

NADH and carbon dioxide

NADH, FADH2 and carbon dioxide

NADH, FADH2, carbon dioxide and oxygen

As a toxicologist, you are given the assignment of determining whether a new chemical is capable of producing dermal sensitization. Explain how you would test for this. Include in your explanation the model/test system you would use and a brief description of how the test is run and interpreted.

Hint: You will need to use resources outside the textbook to answer this. There are many standardized protocols that will be easy to find. Please include in your answer why you picked the test(s) you selected.

Create your own 2020 Health Objectives for older people.

What is this Corona disease? Where is disease prevalent? What organisms does this disease infect and how is it transmitted from host to host? Details.

I have this question, and I have to answer it as essay (for my project). Can you help me. Please can you type the answer. I don't understand the writing hand. Sometime.

Thanks

Remember units and how much water is added to make the final volume. Show your work (c1v1=c2v2)