science - biology

what is the role of plants in the carbon cycle?(2)

• plants absorbed, dioxide from the atmosphere

• Through photosynthesis

explain why animal or plant tissue in concentrated solutions lose mass (4)

• water moves out of the cell

• By osmosis

• Across the partially permeable membrane

• From a high water, concentration to a low water concentration

describe a mutualistic relationship (1)

• A relationship where both organisms benefit

why are stains used when making slides? (1)

• To make structures like the nucleus more visible

would you carry out a belt transact (5)

• layout a tape measure in the area

• Place quadrats at regular intervals

• Count the number of species percentage cover in each quadrat

• Measure the abiotic factors such as lightens intensity

• Repeat the transaction in different areas

compare BMI and waist: Ratio as methods of predicting cardiovascular disease. (3)

• BMI takes into account mass and height

• BMI does not take into account of distribution of body fat

• Abdominal fat is most closely linked with heart, disease, and waist: hip ratio measures this

explain how to use a quadrat to estimate the population of a species in an area. (6)

• place the quadrat randomly

• Count the species

• Repeat the process

• Calculate the mean

• scale up

• improve accuracy