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things I get wrong Flashcards

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1
Q

what complex doesn’t pump protons in the electron transport chain

A

complex II

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2
Q

what ability must a cell have to store glucose- 6 -phosphatase?

A

the ability to store glycogen

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3
Q

what is the carrier molecule for transporting fatty acids through the inner mitochondrial membrane?

A

Carnitine

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4
Q

what mechanisms is used for ATP synthesis in the glycolytic pathway?

A

Substrate phosphorylation

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5
Q

what is a karyotype

A

A karyotype is a preparation of the complete set of metaphase chromosomes in the individuals cells

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6
Q

do oncogenes act in a dominant manor

A

yes

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7
Q

what causes ‘pseudomembranous colitis’

A

clostridium difficile, yellow plaques that can easily be dislodged

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8
Q

what makes chocolate agar plate

A

haemophilus influenza

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9
Q

where do the anterior, middle and posterior cerebral arteries supply?

A 
anterior = F and P
middle= F+T+P
posterior= O
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10
Q

when is plasma urea high

A

in people with upper GI bleeds

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11
Q

how do ticagrelor and clopidogrel work?

A

they are anti platelets and work by stopping ADP binding the platelet receptors

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12
Q

what is a TIPS procedure

A

trans jugular intrahepatic portosystemic shunt, connects the hepatic and portal vien, recommended in recurrent vatical haemorrhage despite optimal treatment.

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13
Q

what is Gilberts syndrome?

A

low UDP glucuronosytransferse (which conjugates bilirubin in the liver) presents as jaundice.

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14
Q

what are telomeres

A

a region of repetitive DNA sequences at the end of a chromosome. Telomeres protect the ends of chromosomes from becoming frayed or tangled

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15
Q

what happens to telomere in each round of replication

A

it gets shorter

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16
Q

what is the FC region of an immunoglubulin

A

the constant chain that binds to the immune cell receptor

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17
Q

what is digoxins mechanism of action?

A

blocks the Na+/K+ ATPases which is responsible for restoring the resting membrane potential, results in sodium not getting in so more calcium coming in hence greater contraction

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18
Q

Omeprazole lowers stomach pH because it…

A

Irreversibly inhibits the H+-K+-ATPase pump in parietal cells

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19
Q

what is the mechanism of action of H2 receptors antagonists

A

Blocks access to the H2 receptor on the parietal cell

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20
Q

what is salmonela

A

a rod-shaped anaerobe with flagella

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21
Q

what appears golden on blood agar plates?

A

staph aureus

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22
Q

what has Extended spectrum beta lactamase (ESBL) acquired resistance to?

A

acquired resistance to all penicillins, resistance extends to 3rd generation cephalosporins and monobactams

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23
Q

why are RNA virus vaccines more difficult to make than DNA

A

RNA viruses have a higher mutation rate than DNA viruses; this is due to the absence of proofreading

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24
Q

what is commonly more peripheral in the lungs, adenocarcinoma or squamous cell carcinoma?

A

adenocarcinoma

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25
which lung cancer causes SIADH (high sodium)
SIADH is a paraneoplastic feature of small cell lung cancer.
26
which lung cancer causes hypercalcaemia (release of PTH-related peptide),
squamous cell carcinoma
27
when is a tumor T1/ T2/ T3
``` T1= less than 2cm T2= greater than 2 cm but less than 5 T3= greater than 5 cm ```
28
what type of hypersensitivity reaction is sarcoidosis
type VI
29
where does collegen deposit in asthma
the submucosa
30
what types of pneumonia are more common in patients with COPD
H. influenzae is most common for COPD exacerbation, along with S.pneumoniae
31
what immune cell targets intracellular pathogens by inserting a perforin protein into the membrane of the target cell causing cell lysis
natural killer cells
32
what is angiogenesis
the formation of new blood vessles (cancer cells)
33
true or false; Foetal haemoglobin has gamma subunits instead of beta subunits, causing it to have a higher affinity for oxygen than adult haemoglobin
true
34
what acts on muscarinic receptors
acetylcholine
35
what immunoglobulins work in dimers? pentamers?
dimers= IgG pentamer= IgM
36
define neo-adjuvant treatment
Treatment given before surgery to shrink the tumour for surgical removal
37
define neoplastic
New growth which is not in response to a stimulus
38
define some features of nuclei in skeletal muscle cells
presence of multiple, elongated nuclei found at the periphery of muscle fibres
39
does vagal stimulation have a negative inotropic effect?
no it has a negative chronotropic effect (rate) but parasympathetic stimulation doesn't have a role in contraction.
40
what cell is responsible for the destruction of large parasites which cannot be phagocytosed in the body
mast cells
41
What is important in the activation of the complement system via the classical pathway?
IgG
42
Barrett’s oesophagus is an example of which type of pathophysiological process
metaplasia
43
faecolith is the most common cause of acute appendocytis?
true
44
define an afferent cranial nerve. efferent.
afferent nerves relay sensory information to the brain and efferent takes motor information from the brain to the muscles.
45
what 3 cranial nerves are involved in eye movement
oculomotor (3) trochlear (4) abducent (6)
46
define an exudate and a transudate
a protein level of less than 30 g/l is a transudate and a protein level of more than 30 g/l is an exudate (people know they are trans before they are 30)
47
causes or transudates
Congestive heart failure Liver cirrhosis Severe hypoalbuminemia Nephrotic syndrome
48
causes of exudates
``` Malignancy Infection (e.g. empyema due to bacterial pneumonia) Trauma Pulmonary infarction Pulmonary embolism ```
49
are the Islets of Langerhans have an exocrine or endocrine on the pancreas
endocrine- insulin, glucagon and somatostatin – secreted to blood
50
what is the difference between a co enzyme and a co factor?
both are things that some enzymes require in order to function properly - co factors are normally metal ions - co enzymes are a subtype of co factor that are organic carrier molecules (carbon based) that hold onto something useful for the reaction eg NAD+ holds onto electrons in the crebs cycle.
51
what is a holoenzyme?
an enzyme with its cofactor
52
what is an apoenzyme
when an enzymes co factor has been removed
53
what is the random restrictive lung condition that often nursery teachers get?
Idiopathic pulmonary fibrosis
54
what hormone does the hear produce under streched conditions
B type naturitic peptide (BNP)
55
what pathogen is present in rheumatic fever
group A Streptococcus/ | Rheumatic fever develops following an immunological reaction to recent (2-6 weeks ago) Streptococcus pyogenes infection.
56
what artery supplies the gall bladder?
the Cystic artery (branch of Right hepatic artery)
57
when gibbs free energy is negative is it spontaneous or non spontaneous
it would be spontaneous and exergonic
58
in genetic trees what is the symbol for males and what is the symbol for females
males is squares and women are circles
59
how do you tell the difference between staph and strep
catalase test and it is -ve is strep and + in staph
60
what condition is Familial adenomatous polyposis due to
adenomatous polyposis coli gene (APC)
61
what is a key features in the development of steatorrhoea which typically consists of pale and offensive stools that are difficult to flush away.
Loss of lipase
62
what drug is given for medical propholaxis in risk of oesophageal bleeds
propanalol (non cardio selective bblocker)
63
what test must be done before starting azathioprine
thiopurine methyltransferase (TPMT), if too low makes them lower, gets sepsis
64
what Ig should you also check when checking anti-TTG
check IgA when checking anti-TTG, because if the IgA is too low then it will mask TTG
65
what is the route of the right reccurent laryngeal nerve? | left?
the right comes off the right vagus nerve and loops under the subclavian artery the left comes off the left vagus nerve and loops under the arch of the aorta
66
phrenic run on the anterious aspect of the pericardium?
vagus runs at sides?
67
what are granulomas
A granuloma is an aggregation of macrophages that forms in response to chronic inflammation. This occurs when the immune system attempts to isolate foreign substances that it is otherwise unable to eliminate.
68
what would the increasing the venomotor tone do to the preload?
would increase the pre load by increasing the venous return to the heart
69
why does morphine cause constipations?
it leads to increased fluid absorption
70
what coloured granuals do basophils have? eosinophils?
``` basophils= purple/blue eosinophils= pink colour ```
71
what is the first line treatment for H pylori? if penicillin allergic?
omeprazol+ amoxacillin+ metronidozole (or clarythromicin) in penicillin allergic omeprazole+ clarythromicin+ metronidozole
72
what is the neurotransmitter for the post ganglionic sympathetic
noradrenaline
73
where is the most likely place for an aspiration pneumonia to end up?
the right lower lobe
74
what disease would be murphys sign positive
acute cholecystitis (infected gall bladder due to bile stasis as a result of obstruction)
75
an example of when would charcot's triad be positive?
Ascending cholangitis -> stones in the common bile duct leading to infection of the biliary tree Charcot’s triad of jaundice, RUQ pain and fever.
76
which biliary condition would an itch be present?
Primary Biliary Cholangitis, autoimmune condition in which AMA antibodies are positive, middle aged lady complaining of fatigue and itch and RuQ pain.
77
what is Primary sclerosing cholangitis
Cholestatic liver disease characterised by inflammation and fibrosis of intrahepatic/ extrahepatic bile ducts mainly affecting large bile ducts, common in UC
78
where are lipids produced
SER
79
what is the normal position of the appendix
retrocecal
80
what enzyme transcribes genetic matierial?
RNA polymerase, rna anytime it is to do with transcription and translation
81
what are transcription factors and what are the type in humans?
proteins that bind to DNA and help make mRNA. TF2D
82
what are allosteric enzymes
bind to a different point of the enzyme
83
what has an effect on the volume halflife?
clearance and the volume of distribution
84
what is pinocytoses
the ingestion of extracellular fluid by cells
85
what is the microbiome?
the collection of all microbes, such as bacteria, fungi, viruses, and their genes, that naturally live on our bodies and inside us

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