Questions
What is the numbering scheme for naming fatty acids and what is the difference between cis...

What is the numbering scheme for naming fatty acids and what is the difference between cis and trans fatty acids?

What are the general properities of glycosidic linkages?

In: Biology

Describe the steps in the process of transcription of DNA to RNA.

Describe the steps in the process of transcription of DNA to RNA.

In: Biology

Would treating human ES cells with increasing concentrations of NGF lead to increasing differentiating of neuronal...

Would treating human ES cells with increasing concentrations of NGF lead to increasing differentiating of neuronal cells.

can you help me with some background information

In: Biology

Describe the major innovations, from earliest (most ancient) to most recent, that made plants progressively more...

Describe the major innovations, from earliest (most ancient) to most recent, that made plants progressively more able to cope with dry conditions on land. Include the 4 major groups of land plants

In: Biology

Which is a product of the light dependent reactions but NOT a reactant of the Calvin...

Which is a product of the light dependent reactions but NOT a reactant of the Calvin Cycle of photosynthesis?

carbon dioxide

NADPH

ATP

oxygen

In: Biology

18. Short hair in rabbits is governed by a dominant gene (L) and long hair by...

18. Short hair in rabbits is governed by a dominant gene (L) and long hair by a recessive allele (l). Black hair results form the action of the dominant genotype (B_) and brown from the recessive genotype (bb). In a cross between homozygous short, black haired rabbit and a homozygous long, brown haired rabbit what are the phenotypic and genotypic ratios of the F1 and F2 generation.

In: Biology

You’re provided a lab protocol to perform a very short digestion of eukaryotic chromatin with micrococcal...


You’re provided a lab protocol to perform a very short digestion of eukaryotic chromatin with micrococcal nuclease, which should result in DNA fragments of 200 base pairs. You setup the experiment but get called away suddenly and are gone for a length of time. When you return to complete the experiment and run the gel to visualize the samples, it shows 146 base pair fragments. Explain what occurred.

In: Biology

Many environmental toxicologists feel that animal testing to determine the safety of industrial and pharmaceutical chemicals...

Many environmental toxicologists feel that animal testing to determine the safety of industrial and pharmaceutical chemicals for human and environment health will diminish in future. What methods or new approaches will take the place of animal testing to forecast chemical safety?

In: Biology

Cell Biology Question: How does defective DNA repair have an effect on cancer cell proliferation? (explain...

Cell Biology Question:
How does defective DNA repair have an effect on cancer cell proliferation? (explain please)

In: Biology

Please give a detailed response and describe how T cells coordinate the specific humoral immune response....

Please give a detailed response and describe how T cells coordinate the specific humoral immune response. Then describe how T cells coordinate the specific cell mediated immune response. For both, be sure to discuss all receptors involved, interleukins, all cell interactions and cell types.

In: Biology

3) What are “age structured” population models and how do they inform toxicological impacts on populations?...

3) What are “age structured” population models and how do they inform toxicological impacts on populations? Why are such models better indicators of toxicant effects compared to the theoretical models of exponential and logistic growth?

In: Biology

Design an experiment that tests the effect of body temperature on the aerobic capacity in an...

Design an experiment that tests the effect of body temperature on the aerobic capacity in an animal of your choice. What variables would you measure, and how? Include detail about experimental design and instrumentation, to show your understanding of how data are acquired. Present hypothetical data (in graphical form), which support your predictions. Make sure to label your graphs accurately and precisely, and use reasonable values (and units) for parameters measured.

In: Biology

In the Community Tolerance Test, the tolerance of representative species in a community exposed to a...

In the Community Tolerance Test, the tolerance of representative species in a community exposed to a toxicant is compared to the tolerance of species in a reference, non-exposed community. Why or how is tolerance expected to differ in the two communities, and what is the value of this test to ecotoxicology?

In: Biology

Air-breathing insects and vertebrates rely on aerobic metabolism for sustained production of ATP, but they effect...

Air-breathing insects and vertebrates rely on aerobic metabolism for sustained production of ATP, but they effect oxygen supply by completely different means. Using two species of your choice (one for each taxon), compare and contrast the way these two groups deliver O2 from the environment to their tissues. Consider the scaling laws for the gas transport cascade and explain why there are no insects larger than 100g, but there are plenty vertebrates larger than that.

In: Biology

Regarding the electron transport chain, are all of the complexes within the chain integral? Specifically, is...

Regarding the electron transport chain, are all of the complexes within the chain integral? Specifically, is complex 2 integral or peripheral? Some images display it as integral, meaning that it does enter the membrane but doesn't span the entirety of it like a transmembrane protein. These different images confuse me, so I'm hoping to get some clarification.

In: Biology