Describe the mechanism and process of natural selection and how Darwin used it to explain the diversity seen in his theory of common descent.

The p53 protein can activate genes involved in apoptosis, known as programmed cell death. Discuss how mutations in genes coding for proteins that function in apoptosis could contribute to cancer.

Feeling the tremors of an earthquake a scared resident of seventh floor of a multistoryed building starts climbing down the stairs rapidly. Which hormone initiated this action?

(a) adrenaline

(b) glucagon

(c) gastrin

(d) thyroxine

Explain how amino acids can be used a source of energy, and outline how ammonia is detoxified.

Explain how elements of the lac operon are exploited to regulate recombinant protein production in E. coli.
this question is biochemistry question

why, in an immunostaining procedure for a specific antigen, do you normally use two antibodies sequentially? Support your answers with citations from the scientific literature

Cellular Respiration Questions

questsion 1.

Energy output. The Gibb’s free energy value for glucose is -2870kJ/mol or -686kcal/mol. If the one molecule of ATP releases 30.5 kJ/mol or 7.3 kcal/mol, calculate the theoretical efficiency (showing your work) for cellular respiration and for anaerobic respiration.

Explain the difference between metabolic rate and basal metabolic rate (BMR).

What happens to BMR with age?

I would highly appreciate if it was in a text form not handwritten.( I have difficulty reading handwritten)

Thank you very much.

explain how the following processes each contribute to animal development: regional specification, cell differentiation, morphogenesis, growth, and developmental time (also known as temporal control). Use citations from peer-reviewed scientific journal articles or the textbook to support your ideas.

Human Activity and Climate Change

In 1500 words, using APA-style formatting, discuss and give your position on the following statement: “Human activity, especially the burning of fossil fuels, is a major contributor to climate change”. Do you agree or disagree? Support your views with credible data.

PLEASE NO PLAGIARISM!!!!!! IN YOUR OWN WORDS!!!!!

Why do you think that some animals have retained flagella as pumps when they are more operationally expensive that muscular pumps?

Explain what type of mechanism will be used to transport glucose from your intestine to your muscles. The relative levels of glucose are provided below.

a. Intestinal epithelium cell: high glucose to Interstitial fluid between intestinal cell and blood vessel: very low (blood vessels have “clefs” that glucose fits through to enter blood by bulk flow.)

b. Na+ is required for the transport into the intestinal epithelium cell. Why? How is the level of Na+ kept low in the intestinal cell?

1. How does internal bleeding due to trauma effect hemoglobin and hematocrit levels as it relates to blood?

2. Explain leukocytosis after post-traumatic splenectomy?

3. What impact does a splenectomy have on the patient's overall immune health?

4. What vaccinations should be reccommended to this asplenic patient and why?