1a. What is the "tragedy of the commons?" Discuss how this relates to examples of over-exploited fisheries?

1b. Describe a marine habitat and describe 2 biotic factors and 2 abiotic factors that affect organisms in that habitat. Describe 2 ecosystem services provided by it as well.

Human Babesiosis is an apicomplexan parasite similar to the parasites that cause malaria. Able to infect either humans or livestock, what is unique to the transmission cycles for human or veterinary transmission? How do these parasites produce disease-causing symptoms?

A mutation occurs in a bacterium. Because of this mutation, DNA synthesis occurs at a very low rate. Upon analysis, it is found to have normal levels of activity of DNA polymerase I and III, DNA gyrase, and ligase. It also makes normal amounts of the wildtype dnaA, dnaB, dnaC, and SSB proteins. The sequence of the OriC (the origin of replication) of its chromosome is found to be normal (wildtype). What defect might account for the abnormally low rate of replication in this mutant? EXPLAIN.

5 pts: Submit a group response

5 pts: Name one correct possible defect

5 pts: Explain how the defect impacts replication

Which of the following processes are involved in the regeneration of the NAD+ pools? MARK ALL CORRECT ANSWERS.

Fermentation

Glycolysis

Pyruvate Oxidation

Pyruvate Reduction

Citric Acid (TCA) cycle

Anaerobic Respiration

Aerobic Respiration

Electron Transport Chair

Chemiosmosis

#1

I post this twice, please don't duplicate answer I need two different views. Thanks

Discussion: Inner Neandertal

What to do:

Please watch the TED talk DNA Clues into Our inner Neandertal Links: https://www.ted.com/talks/svante_paeaebo_dna_clues_to_our_inner_neanderthal. and then read a recent article, Neanderthals and Moderns Humans Interbred '10,000 years ago, Links: http://www.bbc.com/news/science-environment-35595661. and post about something that you learned from a both and whether or not you thought the two contradicted one another.

Can the side-chain of glutamine make a bidentate interaction in the major groove at a G-U wobble base-pair in RNA? Explain your answer.

#2

I post this twice, please don't duplicate answer I need two different views. Thanks

Discussion: Inner Neandertal

What to do:

Please watch the TED talk DNA Clues into Our inner Neandertal Links: https://www.ted.com/talks/svante_paeaebo_dna_clues_to_our_inner_neanderthal. and then read a recent article, Neanderthals and Moderns Humans Interbred '10,000 years ago, Links: http://www.bbc.com/news/science-environment-35595661. and post about something that you learned from a both and whether or not you thought the two contradicted one another.

PLEASE COPY LINKS AND PAST

Genetics - Worksheet #9 Sex-linkage Problems

Name ____________________________________ Date __________ Class_____

Make sure that you show the crosses for each problem. Make sure you include a key telling what letters you are using for example: H is normal and h is hemophiliac. Remember this is sex- linked so you must show sex chromosomes. Use the foil method.

1. Color blindness in humans is sex-linked and recessive. A normal man marries a woman whose father was colorblind but she was not.  

Cross:

Show the genotypes:

the man

his wife,

the genotypes and phenotypes of their offspring.

2. A man with normal vision marries a woman who also has normal vision. One of their children is      

     colorblind.  

   Cross:

Genotypes of the man

Genotype of woman ,  

genotype of their child.

3. Hemophilia is caused by a recessive gene on the X chromosome.  

    A woman whose father was a hemophiliac but who is not one herself marries a normal man.  

Cross:

What are their genotypes and what are the possible genotypes and phenotypes of their children? What percentage of their daughters could be expected to be hemophiliac:

expected to be carriers;

what percentage of their sons will be

hemophiliac: carriers?

4. In cats, certain colors are sex linked. These genes also display incomplete dominance. Use Y for     

      yellow and B for black. Tortoise shell color (Calico) is the combination of both Y and B.  

Cross a tortoise shell female with a black male.

Coss:

Genotypes of offspring:

Phenotypes possible for their offspring.

Why are tortoise shell cats always female?

5. In fruit flies, straight wings is dominant over curved wings. A certain male was mated to a female with curved wings. They produce 50% straight and 50% curved-winged offspring.  

What are the genotypes for the male,

                                        the female

                              and their offspring.

BIO QUESTIONS:

1. Explain why being a dominant allele does NOT mean that the allele is more common or more frequent in a population.

2. When exactly do animal cells become haploid during gamete formation? Be specific.

Why is it important for sexually reproducing organisms to have haploid gametes?

3. Horses and donkeys can hybridize to create a mule, which has some good qualities of both horses and donkeys. Horses somatic cells have 64 chromosomes while donkey somatic cells have 62.

What is the chromosomal number for the gametes of horses? Of donkeys? What is the diploid number for the somatic cells of a mule?

Using what you know about meiosis, why is it likely that mules cannot produce their own gametes but they CAN produce somatic cells (body cells) just fine?

1. Why is the control of gene expression more complex in eukaryotes than in prokaryotes?

2. Where does translation occur? How can translation be controlled in eukaryotic cells?

You have thoroughly mixed 10 million cells in 10 mL of tissue culture medium to be plated in 96 wells of a microliter plates, delivering 100 microliters per well.

a. What is the probability that a well will have no cells in it?

b. What is the probability that a well have one cell?

c. What is the probability that a well will have 3 cells or more?

A virus such as influenza is only one type of pathogen that can invade the human body and cause disease. Different pathogens interact with different components of the immune system in different ways.

(a) Describe the role of skin and mucosae as surface barriers and the mechanisms that enable these anatomical structures to prevent infections.

(b) Discuss three examples of how the lymphatic and immune systems work together both structurally and functionally to fight infections such as influenza.

One of the many immune system functions is to protect individuals from pathogens such as the influenza virus. Explain how innate immunity (non-specific defense) and adaptive immunity each respond differently to exposure to influenza virus?

1.How did plants contribute to the first mass extinction event? Please answer in detail.

2.Take a look at the Revive and Restore project. What are two animals they are attempting to bring back? How? Will these be identical to the original? Is this project worth doing?