WorksheetsFoundations in Biology
Total questions: 18
Worksheet time: 9mins
Excretion is:
how a living thing gets rid of waste products.
how a living thing uses food for energy.
how a living thing makes more of its species, e.g. babies or seeds.
how a living thing detects a threat in the environment.
The ..................... of the active site depends on the temperature.
shape
substrate
lock
collision
The protease enzyme works best in the ..................... condition of the stomach.
acidic
alkaline
basic
neutral
What does the term optimum mean for enzyme temperature?
The lowest temperature at which the enzyme works
The temperature which gives the highest enzyme activity
The temperature which gives the lowest enzyme activity
The highest temperature before denaturing occurs
What type of enzymes break down strach ?
protease
lipase
amylase
phosphorlylase
The girl sitting two rows ahead of you put on too much perfume this morning. Is this diffusion, osmosis or active transport?
diffusion
osmosis
active transport
Which of the following is a sample of active transport?
movement of oxygen from alveoli into red blood cell
movement of water across cell membrane
plant root absorbing mineral ions from the soil
uptake of water by the root hair of the plant
The diagram shows an experiment using a potato. Which shows the result of the experiment after 24 hours?
Which one is the definition of Osmosis ?
movement of particles through the cell membrane from a region of lower concentration to a region of higher concentration using energy in the form of ATP.
passage of water molecules from a region of their higher concentration to a region of their lower concentration through a partially permeable membrane
net movement of molecule from a region of higher concentration to region of lower concentration. Molecule down a concentration gradient
net movement of molecule from a region of lower concentration to region of higher concentration. Molecule down a concentration gradient
What is the role of the chloroplast in the plant cell?
Gives the cell structural support
Site of photosynthesis
Site of chemical reactions
Controls the activities of the cell
Which structure is made of the sugar cellulose?
Cell membrane
Cell wall
Cytoplasm
Vacuole
