Blood
Name the liquid part of blood.
Plasma
The kind of respiration that usually happens inside our cells is called ______________.
aerobic respiration
A solid that dissolves in a solvent such as water is said to be _________.
soluble
State the role of rice in a food web.
producer
A type of blood cell carries oxygen is ____________.
red blood cell
Oxygen in the alveolus (air sac) enters the blood through ______________.
diffusion
Solution X has more solute particles in it than solution Y. Solution X is more ___________ than solution Y.
concentrated
What is Ecology?
The study of ecosystems.
Name TWO structures that most cells have, but red blood cells do not have.
Mitochondria and nucleus
Blood also contains dissolved carbon dioxide. Describe what happens to the carbon dioxide in the blood capillary.
Diffuse into air sac and will be exhaled
For separating the solute from a solution, the filtrate of the solution can be __________.
evaporated
What is ecosystem?
Interactions between living and non-living things
When a person has an infection, the number of white blood cells increases rapidly. Why?
A natural response to get rid of pathogens (bacteria, viruses)
What will happen to the oxygen when it enters the blood capillary?
Combine with haemoglobin in red blood cells to form oxyhaemoglobin
If you keep adding a soluble solid to a beaker of water, there comes a point where no more of the solid will dissolve. You have made a ____________ solution.
saturated
A food web consists of rice, insect, fish, frog, spider and snake. Identify the possible habitat for this food web.
Paddy field
Name THREE things that are transported in blood plasma.
Red blood cells, white blood cells, dissolved glucose, dissolved carbon dioxide.
What happen to the diaphragm muscles during breathing in and breathing out?
Breathing in, diaphragm muscles contract.
Breathing out, diaphragm muscles relax.
For preparing a solution Y that is half as concentrated as solution X, we can _______ solution X with extra __________
dilute, water
Name TWO non-living things in an ecosystem.
sunlight, temperature, water, soil