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WorksheetsPDT 4 final 5 bio
Total questions: 20
Worksheet time: 18mins
when a photosystem absorbs light,
sugar phosphates are produced
electron are transferred to ATP
RuBP accepts electrons
light dependent reaction begins
which statement is true of cyclic photophosphorylation?
electrons flow from photosystem I and produce ATP
involves photosystem I only and produces NADPH
involves photosystem II only and produce ATP
It produces ATP and NADPH
ATP phosphorylates_______ in the Calvin cycle.
RuBP
NADP+
3-phosphogylcerate
glyceraldehyde-3-phosphate
which of the following is TRUE about light independent process in plants?
Calvin cycle occurs only in C3 and C4 plants
PEP carboxylase enzyme is only found in C4 plants
Kranz anatomy only present in C4 plants
which of the following occurs in CARBON FIXATION phase in Calvin cycle?
CO2 is accepted by RuBP
a stable six-carbon molecules formed
NADPH is oxidized to NADP+
ATP is hydrolyzed to ADP and phosphate
if radioactive CO2 (14C) is used to identify the intermediate compounds in the Calvin cycle, which compound will be the first labelled with radioactive carbon?
glucose
RuBP
3-phosphoglycerate
phosphoglycerate
Which of the following statements are TRUE for the light independent process in photosynthesis?
I-occurs in stroma
II-only occurs in dark
III- involves reduction of NADPH
IV-involves reduction of carbon
I
I, IV
I, II, III
I, II, IV
which statement is related to CAM photosynthesis?
is the same as C4 photosynthesis
occurs in plants that live in marshy areas
an adaptation to cold environment in the southern hemisphere
is prevalent in desert plants that close their stomata during the day
Which of the following features of alveoli are required for gaseous exchange?
I-moisture
II-one-cell thick
III-consists of network capillaries
I
I, II
I, II, III
most of the carbon dioxide produced by the body tissues is transported in the form of
carbonic acid
carbaminohaemoglobin
bicarbonate acid
bicarbonate ion
The only statement that DOES NOT represent the factor of dissociation of oxyhaemoglobin is...
high partial pressure of CO2
low blood pH
low partial pressure of oxygen
low partial pressure of CO2
if at at lungs (100mmHg), the oxygen saturation in Hb is 98%, how much % of oxygen received by tissue at 20mmHg?
20%
78%
80%
which one represents coorperative binding?
myoglobin
haemoglobin
which of the following plants have stomata closed during daytime?
pineapple
maize
tomato
pinus
when blood pH drops to 7.2, the new curve will be drawn more to the
right
left
which chemoreceptor will detect the changes of pH in cerebrospinal fluid in brain?
carotid bodies
aortic bodies
medulla oblongata
which structure will detect the expansion of lungs?
diaphragm
external intercostal muscle
stretch receptor
why do cells require more oxygen when you exercise?
to remove more carbon dioxide
to make more ATP
during the process of inhalation, internal intercostal muscle is
contracted
relaxed
during the process of inhalation, external intercostal muscle is
contracted
relaxed
