An 80 year old man is seen for an annual physical examination. He complains of shortness of breath on exertion and is often tired. His stool is black. Laboratory data are:

Haemoglobin: 8.2 g/dL

Haematocrit: 30%

White cell count: 4.2 x 109 one/L

White cell differential:

Neutrophils: 60%

Lymphocytes: 31%

Monocytes: 7%

Eosinophils: 2%

Basophils: 0%

Red cell count: 4.0 x 1012/L

RDW: 20%

Platelet count: 400 x 109/L

Reticulocyte count: 1.2%

Stool occult blood: Positive

1. How would you classify this anaemia morphologically?

2. What is the most probable type of anaemia seen in this patient?

3. What is the likely cause of the complaints of shortness of breath reported in this patient?
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The symptoms that shelly is experiencing result from the interactions between streptococcus pyogenes (a prokaryote) and the cells (eukaryotes) within shelley's body. although there are similarities between these two types of cells, there are also important differences.

Which of the following statements is true of enzymes? a)they dont provide an active site for substrates to bind in a reaction b)they act on a specific type of substrate in a reaction c)they unusable after a reaction d)they change shape after a reaction

In 1959, doctors began using the powerful antibiotic methicillin to treat infections of staphylococcus aureus, but within two years, methicillin-resistant strains of s. aureus (mrsa) appeared. how did the resistant strains of s. aureus emerge? in 1959, doctors began using the powerful antibiotic methicillin to treat infections of staphylococcus aureus, but within two years, methicillin-resistant strains of s. aureus (mrsa) appeared. how did the resistant strains of s. aureus emerge? staphylococcus aureus bacteria that were able to synthesize cell walls using a protein that was not affected by methicillin survived the methicillin treatments and reproduced at higher rates than did other individuals. over time, these resistant individuals became increasingly common. in response to treatment of staphylococcus aureus infections with methicillin, some bacteria began to synthesize cell walls using a protein that was not affected by methicillin. these bacteria survived the methicillin treatments and reproduced at higher rates than did other individuals. over time, these resistant individuals became increasingly common. in response to treatment of staphylococcus aureus infections with methicillin, bacterial populations gradually began to synthesize cell walls using a protein that was not affected by methicillin.