A Photosynthesis and Cellular Respiration Lab was done: 10 algae beads were placed in cuvettes labeled LIGHT and DARK with a color indicator and then LIGHT was placed under a bright lamp and DARK was placed next to it but wrapped in tinfoil. The pH was taken per the color indicator and the Absorbance was also taken (every 5 minutes for 45 minutes).

It was calculated that the slope LIGHT is 0.1261 and the slope DARK is -0.1491. pH increased the fastest in the LIGHT all the way up to 9.0 after 45 minutes and the ph DARK began at 8.0 but then slowly decreased to 7.0 after 45 minutes

I believe that the negative number indicates CO2 rate increases in the dark but decreases in the light as seen by the positive number ---

The question asks---> 1. Look up current ocean pH values. How do the current values compare to those from previous years? ((my answer: 8.1 pH today and 8.2 pH previously (slightly basic with a 0.1 pH drop). This represents a 25% increase in acidity over the last 2 centuries.)). Next, consider what you have just learned about algae and how the chemistry of the indicator used in the experiments you just performed works. Hypothesize why oceans are at their current pH. How is the pH of the ocean changing and why? How might this affect the organisms that live in the ocean?

Imagine that you have the DNA sequences from the intron of a gene in three species called A, B, and C. Species A and B are most closely related, while C is more distantly related. The sequences of A and B differ by 18 base pairs, A and C differ by 26 base pairs, and B and C differ by 28 base pairs. Fossils show that species A and B diverged about 1.2 Mya, but there is no fossil evidence as to when the most recent common ancestor of all three species lived. Use the genetic data to estimate that date. What assumptions are you making to get this estimate?

Global Health

Write a short essay (300 – 500 words) APA Style to answer the following question: What does global burden of a disease mean? Explain how global health researchers tend to measure how significant a health issue is (that is, its global burden and list some methods used for estimating disease burden in the population.

A 55-year-old Cambodian man, who “has never seen a doctor”, was found to be mildly anemic at the time of establishing care with a community-based family medicine physician. His CBC showed: hemoglobin 11.8 g/dL, RBC 5.9 x10⁶/µL, MCV 65 fL, MCH 20 pg, MCHC 29.3 g/dL, reticulocytes 176 x10³/µL, WBC normal, platelets normal. The most likely diagnosis is:

Iron deficiency anemia

Sickle cell trait

Aplastic anemia

Thalassemia minor

What can be the result of a genetic (DNA or plasmid) mutation in a prokaryote?

Select one or more:

a. Endospore formation

b. Antibiotic resistance

c. Meiosis beginning

d. Exponential decay in growth

e. All of the above

Which statement does not describe the structure of a virus?

Select one or more:

a. Some have a core of a nucleic acid (DNA) surrounded by a protein

b. Some have a core of a nucleic acid (RNA) surrounded by a protein

c. A capsid surrounds the nucleic acid core

d. Some have an envelope that surrounds the capsid which is rich in proteins and lipids

e. None of the above

Negative pressure rooms are sometimes referred to as source isolation rooms, while positive pressure rooms are sometime called protective isolation rooms. Explain the thinking behind these names.

Explain what sludge is, its importance and what needs to be done about it.

for the drug escitalopram which has a half life of 27-32 hours

what is it mechanism of actions, the pharmacokinetics, it therputic use and adverse affects of escitalopram

molecular target of escitalopram

explain full mechanism of action of escitalopram

• • What does escitalopram do at the molecular level?
  • What does escitalopram do at the cellular level?
  • What does the escitalopram at the tissue/organ level?
  • What does this mean for the overall effect on the body? (i.e. What is the systemic effect?)?
• Describe ONE therapeutic use for escitalopram, and explain why it is used for the treatment of this condition.
• Identify ONE adverse effect of escitalopram that is directly related to its mechanism of action. Explain why this adverse effect occurs.
• Based on escitalopram half life of 27-32 hours:
  • Calculate how long it takes to eliminate 95% of a single dose of your drug from the body. Provide the range of values and the equation used.
  • From the given pharmacokinetics parameter, explain which elimination model the drug is likely to follow.

1. Both fungi and animals are heterotrophs although they are markedly different in how they acquire nutrients. Explain.

2. Give the name of the sexual spore produced within or on each of the following structures, and cite the group of fungi.

                                             Type of Spore                                      Group Name

    a. Sporangium          

    b. Ascus                                                                               

    c. Basidium     

3. Ascomycota produce what type of spore during asexual reproduction?

4. What kind of reproduction is used by the zygomycota?

5. A student is observing fruiting bodies. If the spores are projecting from a club-shaped structure, the fungus is a _________.    If the spores are produced within a saclike structures, the fungus is a ________.

6. Explain the composition of lichens and why this composition is usually considered a mutualistic relationship.

2. You're a beta fish breeder and have noticed that you have a few fish that display a totally novel ruby red coloring pattern. This ruby red color has since become is very popular in your Etsy store, but you are STRUGGLING to develop a purebreeding strain. Like, every time two ruby red betas are crossed, you end up with a fair number of ruby reds, but still a significant number of betas featuring the standard-type coloration. In your most recent ruby red x ruby red mating attempt, you ended up with 57 ruby red betas and 28 standard betas. All other such matings gave similar phenotypic offspring ratios. Explain what's going on here. (<4 sentences)

When and how does our immune system discriminate between self and nonself? What are the consequences of failed recognition of self by the adaptive immune system??

Briefly describe the three stages of wastewater treatment.