CSI Lochgelly

Which forensic technique is used to determine where a suspect has been?

• chromatography

• microscopic analysis

• soil sampling

• ballistics

Which part of the cell controls what molecules can enter and exit the cell?

• cell wall

• cell membrane

• cytoplasm

• nucleus

Which of the following is an acidic solution?

• carbonated water

• oven cleaner

• bleach

• water

Which forensic technique is used to separate a mixture of different solutes that are dissolved in the same solvent such as pen ink?

• chromatography

• pH testing

• blood typing

• soil sampling

Name a cell part found in both animal and plant cells.

• Nucleus

• Chloroplast

• Cell wall

• Vacuole

Name a cell part only found in plant cells.

• Chloroplast

• Cytoplasm

• Nucleus

• Cell Membrane

Microscopes are used by scientists because:

• they allow scientists to see objects that are too small to be seen with the naked eye.

• they help scientists to measure temperature accurately.

• they are used to weigh heavy objects.

• they are used to record sounds in experiments.

The main purpose of sampling techniques in science is to:

• obtain a representative view of a population

• increase the size of the population

• eliminate all variables

• guarantee 100% accuracy

A quadrat is used to:

• Estimate the abundance of organisms in a specific area.

• Measure the temperature of an environment.

• Determine the pH of soil samples.

• Record the speed of moving animals.

State three benefits of sampling.

• Sampling saves time, reduces cost, and allows for easier data collection.

• Sampling increases errors, complicates analysis, and requires more resources.

• Sampling eliminates the need for data analysis, guarantees accuracy, and is always representative.

• Sampling is only useful for large populations, always introduces bias, and is less reliable.