Explain how ATP hydrolysis can be coupled to endergonic reactions to make them energetically more favorable.

check all of the statements that are true regarding keratinized stratified squamous epithelium

The inheritance rule was initially discovered by Mendel and it depends on clear or qualitative traits. The theory was based on a single gene that was responsible for one character. However, expression of many traits are not governed by a single gene, rather can involve multiple genes as well as additive effects. This kind of inheritance pattern is known as quantitative and is demonstrated by East (1916) as well as others. He performed experiments using 2 homozygous, pure-breeding lines of Nicotiana longiflora that differed in corolla length. After crossing these lines, F1 offspring had an intermediate length for corolla and had same variation level as in parents. But found a very different result for F2 and F3 than expected. Discuss the reasons for this result and if it agrees/disagrees with Mendel’s law. Using obtained knowledge so far, what kind of cumulative effects would you add to this variation?

Samira is a 22 year old female. She is very close to her ideal weight, but complains about being obese all the time. She tries to diet, and is constantly on very low calorie diets. She also has in her bag a famous herb product that helps her get rid of all the toxins in her body (or so she claims). She has been going through a tough time lately. She has a lot of studies and she works at the same time. She loves to eat alone. However, when faced with a crisis, her friends have noticed she starts to eat hungrily and does not stop. One of her friends even noticed she always goes to the toilet directly after her meal.

1. 1- Identify the type of eating disorder that Samira might be suffering from?

2. 2- List the different characteristics that justify your answer

3. 3- Mention one similarity and one difference between both types of eating

   disorders

4. 4- Define and explain the FEMALE ATHLETE TRIAD?

5. 5- Mention two unhealthy consequences of EACH eating disorder

Explain the process by which a single microscopic bacteriophage can produce a plaque in a lawn of bacteria that is visible to the naked eye: infection, replication etc.

In the following breeding scheme, what is the probability of obtaining genotype RrYyTtss in the F2?

                        P          RRYYTTSS   x          rryyttss

                        F1        RrYyTtSs        x          RrYyTtSs

                        F2

Humans and chimpanzees share a chromosomal inversion that is not present in gorillas. Explain why this suggests that the evolutionary phenomenon known as reinforcement might have played a role in the divergence of the gorilla lineage from the lineage that led to humans and chimps.

Describe the carbon fixation reactions of photosynthesis. Be sure to mention the following: (a) the three major stages; (b) the name, quantity, and number of carbons for each intermediate; (d) role and quantity of ATP and NADPH; and (d) the number of turns needed to produce a single glucose molecule.

Distinguish among C3, C4, and CAM photosynthesis and name plants that exemplify each process.

Are humans eusocial why or why not.

1. Enzymes lower activation energy which allows a reaction to occur at a faster rate. Why is it important, in terms of functionality, for enzymes to lower this activation energy? What happens when the physical environment in which the enzyme exists within is altered?

2.From a human perspective, cellular respiration is of an absolute importance in terms of how our bodies converts energy stored in glucose into ATP which our cells can use efficiently. What happens (to humans) when this process is not efficient and no longer functions within cells?

Why/how does the introduction of progesterone during the first 14 days of a (human female’s) cycle prevent pregnancy?

a) What are the advantages and disadvantages of morphological and molecular systematic?

b) why phylogenetic are important with regards to conservation efforts?

c) in term of conservation effort, what can scientist do to reduce the risk faced by species?

Mrs. Frances presented to the emergency department following a grand mal seizure. Her family reports that she has never had a seizure before, but over the past several months, she has complained of multiple headaches and has become more irritable. She has a CT scan of her head, which showed a large brain tumor in her frontal lobe with multiple small tumors in other areas of her brain. There is concern that she may have a grade IV glioblastoma multiforme. A neurosurgeon is called who explains that to treat this condition she will need surgery, radiotherapy, and chemotherapy. He also explains that these tumors are difficult to treat and the median survival time is approximately 1 year. Explain why this type of tumor is so difficult to treat.

Why does estrogen/estradiol decline mid-cycle (about day 14 of a typical human female cycle)?