Match each description with the correct characteristic of a living organism:
Taking in of nutrients which are organic substances and mineral ions, containing raw materials or energy for growth and tissue repair, absorbing and assimilating them. [blank_start]_____[blank_end]
The chemical reactions that break down nutrient molecules in living cells to release energy. [blank_start]_____[blank_end]
A permanent increase in size and dry mass by an increase in cell number or cell size or both. [blank_start]_____[blank_end]
Removal from organisms of toxic materials, the waste products of metabolism (chemical reactions in cells including respiration) and substances in excess of requirements. [blank_start]______[blank_end]
An action by an organism or part of an organism causing a change of position or place. [blank_start]_____[blank_end]
The ability to detect or sense changes in the environment (stimuli) and to make responses. [blank_start]_____[blank_end]
The processes that make more of the same kind of organism. [blank_start]_______[blank_end]
Which statement about enzymes is always correct?
They are made of carbohydrate.
They work best at high temperatures.
They speed up chemical reactions.
They work inside living cells.
A species of bacterium lives in acidic, hot springs at a temperature of 90 °C.
Which conditions will best suit the enzymes of this bacterium?
30 °C and pH 4
30 °C and pH 9
80 °C and pH 4
80 °C and pH 9
Which features are found in mammals but not in other vertebrates?
claws and hair
claws and lungs
hair and milk
lungs and milk
Which cells produce starch in their cytoplasm?
all animal cells
all plant cells
some animal cells
some plant cells
The binomial name for a tiger is Panthera tigris and for a lion, Panthera leo.
What do these scientific names show?
Lions and tigers:
have many features in common.
are genetically identical.
are both in the same species
Which diagram shows the appearance of a plant cell several minutes after it has been placed in a
concentrated solution of sugar?
(0610 June 2009 Paper 1)
The dots represent molecules of a gas in four tubes at the beginning of an experiment.
In which tube will more molecules move from X to Y than in the opposite direction?
(June 2009 QP 1, Q10)