1: How are endocrine disruptors associated with IQ?
2: Why has research on endocrine disruption spurred so
much debate? What steps do you think could be taken
to help establish greater consensus among scientists,
industry, regulators, policymakers, and the public?
3: THINK IT THROUGH You are the parent of two young
children, and you want to minimize the environmental
health risks your kids are exposed to. Name five steps
that you could take in your household and in your daily
life that would minimize your children’s exposure to environmental
health hazards.
In: Biology
describe the structure and replication of DNA and how it allows genetic information to be passed on from generation to generation.
In: Biology
Organism 3
Field Notes: Specimen collected from shaded area along stream in
South Cumberland State Park (Grundy County, TN)
Laboratory Analysis:
Body: Large leaves emerging from underground rhizome
Size: 63cm
Chromosomal Analysis: Plant body is diploid --chromosomes number of
44
Lignin test: Positive
Cuticle: Present
Leaves: Present -- large with branched veins. Underside has
sori(containing haploid spores)
Roots: Present-----branch from the inside
Stem:Present--- vascular tissue(xylem and phloem)present
Life History: Diploid sporophyte dominant generation. Haploid
spores germinate into heart-shaped, haploid, gametophyte. Water
required for fertilization due to flagellated sperm; no seed is
produced. Diploid zygote develops into sporophyte of life ---each
bearing ether megasporangia or microsporangia but not both.
Insects, especially beetles, appear important in
pollination
Question: Explain which domain, kingdom and phylum
you believe this plant should be classified in.
Communication: The local media features the work of your team on their nightly news. During a live interview the reporter asks you " Apparently this plant requires water for fertilization, can you explain, can you explain why"?
Response: ------------------------
In: Biology
Application of the A&P of the Animal & Plant Cell:
Relate the structures of the cell (animal or plant) to parts of
some other concrete or abstract structure and explain how each
structure connects.
Example: Gas to a car is to the mitochondria of the cell.
Explanation: Without gas a car would have no means of energy for
power to move. Just as the mitochondria "powerhouse" provides
energy for the cell.
* Whatever structure chosen to compare the cell to that structure
must be used throughout the entire comparison. . * There should be
approximately thirteen (13) comparisons. One for each part of the
cell. Please number each part in your comparison.
In: Biology
1. Which of the following is essential for male sexual behavior in both rats and monkeys?
a. The vomeronasal organ
b. The main olfactory bulbs
c. The amygdala
d. The medial preoptic area
e. All of the above
2. In a sex test with a male and female rhesus monkey, which of the following would be the best measure of the female’s attractivity?
-The male mounting the female
- T estosterone concentrations in the male’s blood
-The female approaching the male
- The female performing lordosis
- Estrogen concentrations in the female’s blood
In: Biology
The E. coli LacZ will be used as a reporter gene and the expression of the LacZ gene product will be detected by the enzymatic cleavage of the compound X-gal producing blue staining within the embryo. Why was an E. coli LacZ gene used as a reporter gene?
Why is there a Drosophila weak basal promoter located on the P[lacZ] enhancer-trap element?
In: Biology
1 The Krebs Cycle occurs in/on the
A matrix of the mitochondria.
B cristae (inner membrane) of the mitochondria.
C stroma of the chloroplast.
D cytoplasm of the cell.
E thylakoid membranes of the chloroplast.
At the end of glycolysis,
A a net of 2 ATP have been produced.
B one NADH has been produced.
C oxygen is released.
D two FADH2 have been produced.
E one glucose has been produced.
The majority of ATP produced by aerobic respiration is made in
A glycolysis.
B the Krebs Cycle.
C the electron transport chain.
D fermentation.
Glycolysis occurs in/on the
A matrix of the mitochondria.
B cristae (inner membrane) of the mitochondria.
C stroma of the chloroplast.
D cytoplasm of the cell.
E thylakoid membranes of the chloroplast.
_______________________ are stripped from the intermediate organic molecules of the Krebs Cycle.
A carbon and hydrogen atoms
B oxygen and electrons
C H+ and electrons
D ATP and NAD
In: Biology
The Simpson’s Index is typically used as an ecological tool to describe the diversity of species in a particular area. Why isn’t it fair to use the Simpson’s index we calculated using fossils as an accurate measure of the diversity of living organisms in that location during the Devonian?
In: Biology
An autosomal locus has alleles A and a.
The frequency of individuals with the autosomal recessive phenotype is given. Which statements are true? (pick all that are true)
HWE= Hardy-Weinberg equilibrium
1. We can calculate q=Freq(a) even if we don't assume Hardy-Weinberg Equilibrium
2. Even if we don't assume HWE, we can calculate the genotype frequencies that we weren't given
3. If we assume HWE, we can calculate the genotype frequencies that we weren't given
4. If we assume HWE, we can calculate both allele frequencies
5. We can calculate both allele frequencies even if we don't assume HWE.
In: Biology
Questions for an Ecology assignment. These questions are based on the article: Barbosa, Pedro, et al. "Associational resistance and associational susceptibility: having right or wrong neighbors." Annual review of ecology, evolution, and systematics 40 (2009): 1-20.
1. Describe an example the authors provided for a way that competition with a neighboring plant can alter its susceptibility to herbivores. Can you think of another instance in which competition between focal plants and neighbor plants might lead to either associational resistance (AR) or associational susceptibility (AS)? Or vice-versa-- herbivory can alter competitive interactions between plants as well! Please describe one case.
2. The meta-analysis found that diet breath (an insects’ degree of specialization) had little influence over the likelihood of AR or AS on plants (Figure 2c). However, their evaluation of ‘neighbor affects’ across generalists and specialists did not consider several potentially important interacting factors, including relative plant abundance and biomass of both the neighbor and focal plant, as well as taxonomic relatedness of the neighboring plant. How might these factors interact with herbivore diet breadth to alter a plants’ susceptibility? (choose one)
2.
In: Biology
Many of you are biology majors, and the rest of you have probably taken a biology class, so this week's discussion question is this: How much of Linnaeus' classification system survives today? Which part do you still learn in your classes? What, if anything, has changed in classification systems since Linnaeus' time?
In: Biology
List the inhibitors of ETC , Oxidative phosphorylation and their specific targets / (actions) describe briefly
In: Biology
What factors contribute to the SPREAD of fires after an earthquake?
| A. |
Phones are unusable, so fires go unreported. |
|
| B. |
Fire departments are overwhelmed by the number of fires. |
|
| C. |
Roads are blocked with debris and abandoned cars. |
|
| D. |
Many fires are not discovered right away, because some buildings are evacuated. |
|
| E. |
Inadequate water pressure |
|
| F. |
all of the above |
|
| G. |
“B” and “E” only |
|
| H. |
“B”, “C” and “E” only |
In: Biology
Discuss the importance of water balance and imbalances in electrolytes.
In: Biology
In: Biology