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Worksheets

PBS 2.1.1 - 2.1.2

Total questions: 15

Worksheet time: 15mins

Name
Class
Date
1.

What is cholesterol?

a)

carbohydrate

b)

waxy fat-like substance

c)

protein

d)

vitamin

2.

Estimate the approximate time of death for the following situation:

A body was found with no evidence of rigor.

a)

2 - 6 Hours

b)

8 Hours

c)

Less than 2 Hours

d)

Less than 1 Hour

3.

The cooling of body temperature after death is:

a)

algor mortis

b)

livor mortis

c)

rigor mortis

d)

pallor mortis

4.

Of the options given, which are the first to arrive at a corpse?

a)

Parasitic wasps

b)

Beetles

c)

Blowflies

d)

Flesh flies and house flies

5.

What are the life stages of maggots called?

a)

Pupations

b)

Metamorphoses

c)

Instars

d)

Generations

6.

In an experiment, the _______ group is the group that serves as the baseline for comparison.

a)

experimental

b)

control

c)

independent

d)

dependent

7.

Which lanes represent DNA from the same person?

a)

1 and 2

b)

2 and 3

c)

1 and 4

d)

3 and 4

8.

Time of death is determined by measuring

a)

rigor mortis

b)

pupil dilation

c)

environmental temperature

d)

core body temperature

9.

Blood from 2 meters from the ground

a)

is 2 cm in diameter

b)

is 1.2 cm in diameter

c)

is not included in the chart

d)

is circular in shape

10.

What is the primary function of the mitochondria in a cell?

a)

Energy production

b)

Protein synthesis

c)

DNA replication

d)

Photosynthesis

11.

Which of the following is a chemical change?

a)

Melting ice

b)

Boiling water

c)

Burning wood

d)

Breaking glass

12.

What is the chemical formula for table salt?

a)

NaClNaCl

b)

KClKCl

c)

CaCO3CaCO_3

d)

H2OH_2O

13.

In a controlled experiment, which variable is manipulated to observe its effect?

a)

Dependent variable

b)

Independent variable

c)

Control variable

d)

Extraneous variable

14.

Which organ system is responsible for transporting nutrients and oxygen to cells?

a)

Digestive system

b)

Respiratory system

c)

Circulatory system

d)

Nervous system

15.

What is the process by which plants convert sunlight into chemical energy?

a)

Respiration

b)

Photosynthesis

c)

Transpiration

d)

Fermentation