The vagus nerve is the cranial nerve numbering
(a) 7
(b) 5
(c) 10
(d) 9.
In: Biology
Koch’s postulates are not applicable to
(a) diptheria
(b) cholera
(c) TB
(d) leprosy.
In: Biology
Evolution
You work for a forestry department. Your colleague asks your opinion of a proposal to use artificial selection to breed a population of lodgepole pines that are resistant to the mountain pine beetle. They have managed to clone a large number of seedling lodgepole pines all from a single parent. They want to take those clones that are most resistant to the mountain pine beetle and breed those together and then use this next generation to replant in a national park. Will this proposal work? Briefly justify your answer
In: Biology
1. When an allele becomes more common in a species, what changes?
| A. gene flow |
| B. the gene pool |
| C. the type of species |
| D. the number of chromosomes |
2. Which word describes what happens when different populations of the same species develop different allele frequencies?
| A. convergence |
| B. polyploidy |
| C. divergence |
| D. hybridization |
3. What is a biological race?
| A. a population in a species in the process of divergence |
| B. a subset of a species in a particular location |
| C. a human phenotype |
| D. a unique species that closely resembles another |
In: Biology
The ‘blue baby’ syndrome results from
(a) excess of TDS (total dissolved solids)
(b) excess of chloride
(c) methaemoglobin
(d) excess of dissolved oxygen
In: Biology
Which of the following will be curable in next two decades?
(a) tuberculosis
(b) cancer
(c) poliomyelitis
(d) none of these.
In: Biology
What property of cancer cells do chemotherapeutic agents attempt to exploit?
In: Biology
Explain the evolution of drug resistant bacteria using MRSA as an example.
In: Biology
Describe the mechanism and process of natural selection and how Darwin used it to explain the diversity seen in his theory of common descent.
In: Biology
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.
In: Biology
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
In: Biology
Explain how amino acids can be used a source of energy, and outline how ammonia is detoxified.
In: Biology
Explain how elements of the lac operon are exploited
to regulate recombinant protein production in E. coli.
this question is biochemistry question
In: Biology
In: Biology
In: Biology