what is the relationship between social media usage and academic performance outcomes in college students? one page

The experiment is about whether the concentration of sodium bicarbonate will have an effect or not on the rate of photosynthesis in spinach by recording the time taken by the leaf disks to float in the sodium bicarbonate solution with different concentrations (0.7% and 1.5%) as treatment groups and the distilled water as the control group.

Is it possible for leaf disks to float in thecontrol group (Distilled water)?

Why do you think the leaf disks floated at different times in your trial run?

What are the potential sources of error? How will you troubleshoot these when running your experiment?

On what basis will you determine the number of replicates to be used?

Assess the use genetic mutant analysis and reporter genes (green fluorescent protein) tools in the study of the of development. What are the advantages of these tools? Do they have any limitations or restrictions?

1.Create a chart to organize serological tests listed below that use antigens and their corresponding antibodies. Create columns for the name of the tests, the category of the tests, the description of the tests and examples of the tests under the categories.

-Precipitation Tests

-Turbidimetric and Nephelometric Tests

-Agglutination Tests

-Neutralization Tests

-The Complement Fixation

-TestLabeled Antibody

-TestsPoint-of-Care Testing

Punnett squares use the  ____________  of gametes to determine the genotypes and phenotypes of all possible offspring.

Two laws of probability apply to genetics. The product rule states that the chance of two events occurring  ____________  is equal to the multiplied probabilities of each of those two events occurring  ____________ .

The sum rule adds  ____________  probabilities to determine the  ____________  probability for an event.

When events are described with the word "and", the  ____________  rule is used. Events described using the word "or" often use the  ____________  rule.

The results of one-trait and two-trait crosses, depending upon the  ____________  of the gametes, have certain characteristic ratios that describe the genotypes and phenotypes of the offspring.

The sum rule is used to determine this value when the results of each  ____________  are added.

Skin color and height are examples of polygenic traits that are controlled by  ____________  sets of alleles.

Polygenic traits are graphically represented as a  ____________ curve.

In polygenic inheritance,  ____________  alleles all code for product and have a  ____________  effect on phenotype.

The effects are additive and result in a  ____________  of phenotypes.

6. How does spatial structure affect competition and cooperation? This is a microbiology question.

you decide to determine the effect of used cigarette butts on water from Morses Creek NJ and how it affects the water quality index. In the lab you set up 3 large tanks of water from morses creek for the control group and 3 large tanks for the experimental group. Explain how you should set up the control group tank and the experimental group tanks to measure dissolved oxygen levels, ph levels, and nitrogen levels

If the egg-to-adult survival rates of genotypes A₁A₁, A₁A₂, and A₂A₂ are 90 percent, 85 percent, and 75 percent, and their fecundities are 50, 55, and 70 eggs per female, respectively, what are the absolute fitnesses (W) of these genotypes? Using A₁A₁ as the fitness reference, what are the relative fitnesses (w)? If the frequency of the A₂ allele is p = 0.5, what will be its frequency one generation later? What will be the allele frequency when the population reaches equilibrium (stops evolving)?

1.) Come up with one (1) example of how two (2) sympatric species of Apis bees could potentially be prevented from successfully mating with each other in the wild. The mechanism could be behavioral, environmental, etc. - just no direct human intervention. Your example can be based on reality or be totally imaginary. Just make sure to explain how your answer would successfully contribute to reproductive isolation.

2) Come up with one (1) example of how two (2) allopatric species of Apis bees could potentially be prevented from successfully mating with each other in the will.d. The mechanism could be behavioral, environmental, etc. - just no direct human intervention. Your example can be based on reality or be totally imaginary. Just make sure to explain how your answer would successfully contribute to reproductive isolation.

what would be different for bacterial cells that happened to be inside the agar and those that were on top of the agar in plates from the pour plate method? explain.

1.You are studying gene X, a methylation sensitive gene. You observe that when X is expressed, there is also a non-coding transcript, Y, that is expressed on the same chromosome.

–Outline experimental methods/techniques to investigate how Y can regulate the expression of gene X through methylation. Explain what each method would produce.

2.Explain what is meant by chromatin remodeling AND give an example of the molecular machinery involved.

Consider the table below giving the numbers of juveniles and adults for one generation.

Calculate fitnesses (viabilities), relative fitnesses, the selection coefficient, and the heterozygous

effect. What type of selection is this? What will the allele frequencies be for the adults in the

next two generations assuming random mating? What will the frequency of the A1 allele be at

equilibrium?

Genotype: A1A1 A1A2 A2A2

Juveniles: 795 267 138

Adults: 596 242 83

Question: 1. Neatly, draw two cross sections showing differences in the arrangements of the vascular tissue... 1. Neatly, draw two cross sections showing differences in the arrangements of the vascular tissue found in a dicot herbaceous stem and a six year old dicot woody stem. Identify the following tissues if they are present: ground tissue (soft support), vascular tissue (both primary and secondary conducting tissues), wood, bark, seasonal growth rings, pith rays. (be complete)

2. Color code and explain the location of the living functional vascular tissue and location and function of the different cambiums present in both cross sections.

3. Explain how these growth rings are formed during the growth of a tree. Can the drawings be in detail please!

Why might a small deletion be viable if heterozygous?

How does a small duplication result in a phenotype when heterozygous?

Larger deletions are typically not viable even as heterozygotes. Why? And what genetic term is associated with this phenomenon?

The ubiquitin protein from the malaria parasite was treated with chymotrypsin, and the resulting fragments were sequenced. A second sample of the polypeptide was treated with trypsin, and the fragments were sequenced. What is the sequence of the polypeptide?

Chymotrypsin fragments:

AGKQLEDGRTLSDY

IPPDQQRLIF

VKTLTGKTITLDVEPSDTEIN-VKAKIQDKEGI

NIQKESTLHLVLRLRGGMQIF

Trypsin Fragments:

LR

AK

EGI

IQDK

LIFAGK

QLEDGR

TLTGK

IPPDQQR

GGMQIFVK

TLSDYNIQK

ESTLHLVLR