ESM236

In anaerobic conditions,
ntrates are reduced to
nitrous oxide through a
process of ___.

Food leftover in the kitchen
for 3 days in the presence
of air and water will reveal
spores of ___

Sexual reproduction in the
zygomycetes occurs by

The environment,
organisms, biotic and
abiotic factors are
components of the

Rhizobium radiciola and
Bacillus radiciola live ___ in
the root nodules of
leguminous plants.

The process by which the
cell protoplasm is covered
by a thin membrane which
is is pushed out of a cell to
form a bus is called

Biogeochemical cycles
have the following features
except

A continous flow of nitrogen
in the ecosystem is
maintained through

The oxidation states of
sulphur does not include

Which of the following
bacteria is not an
anaerobe?

Sulphur is an essential
component of living cells
found in amino acids such
as ___

The mean daily
precipitation overland is
about

The make-up of a
microbiological medium
exists in all of these except

The hyphae of fungi is
bounded by a cell wall
made up of chitin and ___

The advantage of agar
medium over gelatin as a
solidifying agent is that

Citric acid is produces by
___.

Ammonia is converted to
nitrites during the process
of ___

Wines are produced from
grapes or other fruits with

The earth's water supply is
also known as

Autotrophs are able to
manufacture their food
through

Prosthesa is an adaptation
for ___ bacterium

The fungus Rhodotrula
gracilis produces the
vitamin

Clostridium tetani is a
pathogen which causes -----
---in man.

A
is obtained when
microorganisms are grown
in the laboratory medium

__ determines the type
and population of microbes
in waterbodies.

Prosthesa is an adaptation
for a bacterium found in
lakes

In anaerobic conditions,
ntrates are reduced to
nitrous oxide through a
process of

What is the ultimate energy
source in an ecosystem?

A large portion of the
sulphur in the biosphere is
found in

Microorganisms may be
___

When a virus lacks a
demonstrable latent period
in the vector, it is said to be

A species of yeast used in
preparing bread is ___

The movement of chemical
elements through the
biological and geographical
components of the
biosphere is known as ___

Microorganisms may grow
in all these areas except
___.

Which of the organisms is
used in the production of
cheese?

Which of the following is is
a limiting factor for growth
of many organisms?

The organism
partakes in the production
of citric acid

Clostridium spp is mainly
found in the

Saccharomyces cerevisiae
produces the enzyme __

Which of these processes
is not involved in the
nitrogen cycle?

All these are
chemolitotrophic bacteria
except

In cell culture, some tissues
deteriorate as they multiply;
this is called
effect

A limiting factor for growth
of many organisms is

Rhizobium radiciola and
Bacillus radiciola live
in the root nodules of
leguminous plants

A typical sporangium is
found in the family

Energy transfer to the
consumers in the
ecosystem is done through
the ___.

The hyphae of fungi is
bounded by a cell wall
made up of chitin and

Ammonia is converted to
nitrites during the process
of

Lipase is produced by
which of the following
fungi?

Which of the following is not
a process by which carbon
is restored back to the
atmosphere?