Which of the following is not a characteristic of a theory?
It can't account for all aspects of a phenomenon.
It is constructed within a historical and cultural context
It operates on a concrete level.
It seeks to explain a defined set of patterns in a phenomenon.
In: Biology
abnormal hemoglobin that causes sickle cell is an example of a mutation that is:
a)both adaptive in areas without malaria and maladaptive in areas with malaria
b)adaptive in areas with malaria
c)maladaptive in areas with malaria
d)adaptive in areas without malaria
In: Biology
1. What type of joint is the shoulder?
2.The first bone that is mentioned in "Dem Bones" is the toe bone. What is the scientific name for the toe bone?
3. Your skeleton has many functions. Which one of these is NOT a function of the bones?
4. What is the common name for the glenohumeral joint?
5. Where are the majority of the body's bones located?
6. Which of the following best describes rheumatoid arthritis?
7.Also known as the thigh bone, which is the longest bone in your body?
8.The joint in the human skeletal system that has the greatest range of motion can be found in the shoulder. What kind of joint is the shoulder?
9. The human skull (cranium) has two main parts: the neurocranium (braincase) and viscerocranium (facial bones). Which of these is not one of the eight bones that form the neurocranium?
10. What is responsible for the formation of osteoblasts, which are responsible for the formation of bone?
11. Which three bones connect at the human knee?
12. Which of the following is NOT a facial or skull bone?
13. The "axial skeleton" consists of which of the following sections of the body?
In: Biology
Provide a detailed explanation of the effects of obesity on macronutrient metabolism (carbohydrate, lipid and protein) during pregnancy and the resulting effects on fetal growth and development.
In: Biology
1) Why are quantum dots generally created for biological use having a core-shell design?
2) Design a probe and experiment where you could monitor the endogenous in vivo activity of a particular protease that cleaves the peptide sequence DEVD. Assume this protease is present at extremely low levels in the body.
In: Biology
1) What properties would you consider important for designing a fluorescent probe that could be used in vivo to study an enzyme activity found in blood vessels?
2) What is the difference between an epitope tag and a fusion protein? Describe how you might image dynamics of centrioles in live cells during cell division assuming you use a genetic approach involving creating a fusion protein. Use diagrams and words to explain what proteins you would use to do this and how you would design your experiment.
3) Show two different chemical labeling methods you could use to label high quality antibodies you have obtained from a company by using small organic fluorophores purchased from a chemical supplier. Draw the chemistry occurring on the antibody.
In: Biology
There are techniques in biotechnology that can create genetically engineered babies.
This technology can cure genetic diseases, such as Multiple Sclerosis, Hodgkin’s Disease, Cystic Fibrosis, Alzheimer’s, or Sickle Cell Anemia. However, it can also be used to give cosmetic characteristics or traits that would result in an unfair advantage, such as creating better athletes by giving them incredible strength. Write a 250-word Essay on how this technology should be used in the future. Should limits be placed on what can be done with this technology? How can such regulations be enforced?
OUTLINE
1) How should this technology be used in the future? - To prevent genetic diseases and assist the child in living a healthy life.
2) Should limits be placed on what can be done with this technology? - YES. This technology should not be used for superficial purposes, such as appearance concerns, building better athletes, and selecting the sex of the child.
3)How can such regulations be enforced? - By setting laws that require the procedures to only be used for health concerns and the prevention of genetic diseases.
In: Biology
Which of the following occurs in cellular respiration but NOT in photosynthesis?
oxygen is consumed
water is split
electrons pass through an electron transport chain
protons are pumped across the inner mitochondrial membrane
there is a negative free energy change
redox reactions are aided by enzymes
In: Biology
6) a) Why does the chick embryo form as a blastoderm and not as a blastula? (4 %)
b) Where are the 2 chick early organisers and what are they called? (5 %)
c) How are new somites specified in chick? (3%)
7) a) What is the difference between the mammalian early blastula and other vertebrate embryos and what is the significance of the differences? (5%)
b) How do homeotic genes in mice differ from those in flies? (4%)
c) What is the role of retinoic acid in mouse determination (3%)
In: Biology
What are the main concerns with the dietary protein choices and why?
What recommendations, given many suffer from chronic diseases, would you give re: protein sources? (perhaps a ratio of animal protein to plant protein).
In: Biology
4) a) What is the cavity inside the blastula called and how does it form? (3%)
b) What happens during gastrulation in the amphibian embryo? (3 %)
c) What are the tissue layers and the cavities present in the amphibian embryo after end of gastrula? (6 %)
d) How does the neural tube form and what does it become in the adult? (4%)
5) a) How are axes determined in the amphibian embryo? (10%)
b) Describe an experiment that can reveal the function of the Nieuwkoop centre. (5%)
c) How and where is the Spemann organiser induced? (3%)
In: Biology
Describe the general physiological characteristics of the archaic forms of H. sapiens. How do these hominins physically differ from the Neandertal?
In: Biology
In: Biology
Discuss the importance of amphioxus and ammocoete larvae and how they are different from each other.
In: Biology
What would each of the following be predicted to achieve regarding cancer development?Explain you answer.
A patient takes low dose aspiring for many years.
An individual inherits a defective version of the XPA gene, a component of the nucleotide excision repair pathway, from each of his parents.
A low grade tumor cell hypermethylates the promoter for Mad2, a component of the spindle assembly checkpoint.
A patient with a rapidly growing tumor receives an experimental treatment consisting of a potentangiogenesis inhibitor.
In: Biology