mistake deck Flashcards
What are the products of respiration in green plants?
A) glucose and co2
B) glucose and oxygen
C) water and co2
D) water and oxygen
Ans
C) water and co2
RESPIRATION AND PHOTOSYNTHESIS ARE NOT THE SAME THING FOOL
In which natural cycles do photosynthesis and respiration both play a part?
A) carbon cycle and water cycle
B) carbon cycle only
C) water cycle only
D) none
Ans
A) carbon and water cycle
In an ecosystem, what happens to most of the chemical energy in the decomposers?
A) It becomes heat.
B) It is transferred back to the producers.
C) It is transferred back to both producers and consumers.
D) It is destroyed.
Ans
A) it becomes heat
State what happens to energy when it leaves an ecosystem, such as the African grassland.
lost to environment
Explain why there are no more than a set no of trophic levels in an ecosystem
most energy from the sun not available
energy is lost between trophic levels
energy is lost in respiration
hence not enough energy to support another trophic level
In a pyramid of numbers, what does the top of the pyramid represent?
A carnivores
B decomposers
C herbivores
D Sun
Ans
A) carnivores
how many decomposers are there in this food chain
rice plant → caterpillar → song bird → hawk
0
what is another name for diffusion
movement of molecules
what causes the diffusion of oxygen into a plant cell
movement of molecules
what is NOT a feature of hydrophytes
A) large air spaces in tissues
B) leaves rolled up and covered with hair
C) leaves with stomata on upper surface
D)roots and xylem reduced
ans - B
the diagram shows organisms feeding on a dead rat and one of the organisms which, in turn, feeds on them
what is needed to complete the food chain?
A) canivore
B) consumer
C) predator
D) producer
ans - D
which stages of genetic engineering involve the formation of sticky ends
isolation using restriction enzymes
DNA of a bacterial plasmid is cut open using restriction enzyme
eutrophication causes the death of fish
what is the direct cause of the death of the fish
A) decomposers reduce the amount of dissolved oxygen
B) nitrates are toxic to plants
C) the rapid growth of producers uses up all the available nutrients
D) the sudden increase in the number of bacteria increases the spread of disease
ans - A
physical difference between shape of palisade cell and epithelial cell
epithelial cells have an irregular shape
what is the use of a stirrer in a fermenter
keeps microorganisms from sinking
what is the use of a water-filled jacket in a fermenter
maintains temperature
what are the use of probes in fermenter
detect pH
why do the air and nutrients which are added to the fermenter need to be sterile
to avoid contamination
function of magnesium in plants
making chlorophyll
effect of lack of nitrate in plant
poor growth of plants
describe how dna can be used to classify organisms
sequence of bases in DNA are used
base sequences which are more similar are more closely related
explain the problems that may occur as sickle-celled red blood cells flow through the body
less oxygen supplied to tissues
less carbon dioxide taken away from tissues
less energy produced from aerobic respiration in tissues
red blood cells can get stuck in capilaries
