Huh? (random stuff from exams)

Question 1

What’s pili?

Answer 1

A pilus is a hair-like appendage found on the surface of many bacteria and archaea.

Question 2

It said write answer as log10 value. How ?

Answer 2

So when get value, do log(value) in calc. Write answer as 10^asnwer.

Question 3

Measuring breaths apparatus name?

Answer 3

SPIROMETER

Question 4

negative control doesn’t mean removing the IV!

Answer 4

I said no sugar w yeast but were measuring effect of sugar type on respiration rate therefore use no yeast as control not no sugar

Question 5

CYTOKINES ATTRACT PHAGOCYTES, OPSONINS BIND TO PATHOGEN AND INCREASE PHAGOCYTOSIS/RECOGNITION BY PHAGOCYTE.

Answer 5

yup

Question 6

When deep underwater, have to absorb light of —-wavelength.

Answer 6

When deep underwater, have to absorb light of SHORTER wavelength.

Question 7

KOH solution absorbs?

Answer 7

CO2

Question 8

Lymph contains more protein than tissue fluid bc

Answer 8

bc of antibody production by plasma cells

Question 9

whats the protein called on the post-synaptic cleft that nt bind to to allow ion in?

Answer 9

ligand-gated ion channel protein.
(type of intrinsic/integral protein)

Question 10

What’s the name of the chemical used to make amino acids visible on a chromatogram?

Answer 10

ninhydrin

(a.a react with ninhydrin and a purple/brown colour is produced)

Question 11

Centrifuge separates based on..?

Answer 11

density

Question 12

Use range with

Answer 12

with narrower intervals between … and …

Question 13

idea that with statistical tests..

Answer 13

statistical tests only give a probability

Question 14

how to produce many clones from single parent plant?

Answer 14

many explants of parent plant, calluses subdivided, plantlets subdivided

Question 15

question on a sex-linked disease. given family tree showing affected and gender. what do we know abt the allele?

Answer 15

it was dominant bc occur in daughter of an affected father

on X chromosome bc it occurs in females - affected father always pass to daughter

Question 16

The competitive exclusion principle says

Answer 16

The competitive exclusion principle says that two species can’t coexist if they occupy exactly the same NICHE!

Niche - A species’ niche encompasses both the physical and environmental conditions it requires (like temperature or terrain) and the interactions it has with other species (like predation or competition). Eg two penguin species may have same niche.

Question 17

Bioinformatics

Answer 17

access to data on DNA AND proteins
access to large amounts of data
format is universal