Homework Help for Biology

BIOL 110 Principles of Biology

1.Describe the structure of a plasma membrane.

2.Define an amphipathic molecule and give an example.

3.Explain the difference between integral and peripheral proteins.

4.Describe the fluid-mosaic model of a membrane.

5.Identify and discuss the function of proteins located in the plasma membrane.

6.Explain the difference between glycoproteins and glycolipids.

7.Why can carbon form chemical bonds with so many elements?

8.Explain the meaning of concentration gradient as it pertains to movement of substances into and out of cells.

9.Explain diffusion and osmosis.

10.What molecule is thought to facilitate the movement of water molecules through a plasma membrane?

11.Explain the difference between active and passive transport across the plasma membrane. Provide examples that occur in the human body.

12.Explain the impact to a cell if placed in a hypertonic solution; include a definition of hypertonic solution and why the change occurs.

13.Identify a similarity and difference between facilitated transport and active transport. Do not state that both move substances across the membrane.

14.Explain the sodium-potassium pump and identify the type of membrane protein involved.

15.Identify and explain the process used by cells to secrete substances.

16.Explain the composition of a plant cell wall and how it differs from the cell wall of a prokaryotic cell.

17.Explain the plasmodesmata and identify the kingdom in which they are found.

18.Define energy and identify the two basic forms of energy.

19.Define entropy.

20.Define metabolism.

21.Explain the difference between exergonic and endergonic reactions.

22.What are coupled reactions and what roles can ATP serve in these reactions?

23.Explain the difference between oxidation and reduction reactions.

24.What is energy of activation?

25.What factors affect the speed of enzymatic reactions?

26.What is an electron transport chain?

27.What occurs at the active site of an enzyme?

28.Define enzymatic inhibition.

29.Define chemiosmosis.

30.Define vitamins and identify their function.

How would you design an experiment to test whether M-CSF growth factor receptor signaling is dependent on dimerization of the receptor?

is eukaryotic or a prokaryotic metabolism cell more efficient : enzyme required, time producing ATP)? Explain your opinion by giving specific examples.

One strategy to improve the population size of Wood Ducks is to provide them nest boxes like the one above. Early attempts at this revealed that boxes placed out in the open like this attracted brood parasites, conspecifics that would lay their eggs in other ducks' nests. This happened so much that the boxes sometimes became TOO full of eggs, and the whole nest failed. Researchers started putting these boxes in more hidden places, and the brood parasitism rates decreased.

Explain how a nest box in the open is an example of an Evolutionary/Ecological Trap

For one defined terrestrial ecosystem, describe the currently accepted model of climate change by describing the ecosystem, listing the causes of those changes, describing ecological effects of the climate change, making sure to include your analysis as to whether and to what extent the change is deleterious or beneficial, and suggest viable solutions to mitigate the climate change. Include at least two levels of change.

Hello, I need help with a paper regarding manganese, ROS, T6SSS and Burkholderia thailandensis. I'm afraid to be copyrighted so I will not post the link. The paper has so many figures, I just get lost in the explanation. Does anyone have information about this? I have to be able to understand and explain each figure shown in the paper so information will greatly be appreciated

Name of article:

manganese scavenging and oxidative stress response mediated by type VI secretion system in Burkholderia thailandensis

When increasing the size of muscles or building muscle mass ____________.

Why do bones have a blood supply?

In a chemical synapse, what is the name of the gap between the transmitting and receiving neurons?

The main difference between an axon and the dendrites is?

Discuss the placebo effect; what it is and how it can be accounted for in research.

During methyl-directed mismatch repair, at what stage of the mechanism is the incorrectly incorporated base removed from the DNA?

A1. During DNA polymerase III action.

A2. During exonuclease action.

A3. During glycosylase action.

A4. During MutH action.

A5. None of the above are the relevant stage of the mechanism.

When blood enters the heart, it always first enters an atrium and then continues to a ventricle. Select one: True False

Reciprocal crosses involving drosophila mutant small winged ( recessive) flies gave different results. Crosses between small winged males and wild type females produced only wild type flies. On the other hand, when wild type males were used for the cross, both small winged and wild type flies were seen among the progeny. Give an explanation for this result. ( Draw the crosses and expected result). If the F1 progeny from the second cross were intercrossed, what F2 progeny ratio is expected ? ( genotypic and phenotypic ratio)

5. Heart attacks

a. almost always result in instant death

b. can be mild, moderate, or severe

c. do not result in necrosis of heart tissue

d. can only be detected using an arteriogram

6. An ECG can help diagnose

a. low hemoglobin

b. high blood pressure

c. arrhythmias

d. high afterload on the heart

7. A graded exercise test should include

a. a test

b. a lactate threshold blood test

c. a calculation of aerobic power

d. an exercising ECG for those at high risk

In deciding what to measure in a single-case experiment, it is usually best to...?

Why are so many chlorophyll molecules found in chloroplasts if only a small fraction are able to convert light energy to chemical energy?

In the experiment of electron transport in chloroplast,is there an electron being accepted in the tube even though there's no DCPIP present? Explain your answer.