Biology, 24.04.2021 18:40, cookies1164

Investigate each of the three components of cell theory to investigate from the corkboard in the virtual lab: All organisms are composed of cells.
Cells come from existing cells.
Cells are the basic unit of life.
For each section, record your observations below.
Complete your report and submit it for grading.

Data and Observations:
Investigation: All organisms are composed of cells.

What is the main function of each part of the compound microscope?

Part

Function

Eye piece

Ocular lens

Objective lenses

Slide

Cover slip

Stage

Focusing dials

Light

Condenser lens

Observe each specimen under the microscope, and record a description about its appearance.

Specimen Type

Description

Plant cell

Animal cell

Bacteria cell

Investigation: Cells come from existing cells.

Observe the two flasks, and record information about their appearance.

Day

Flask with open (broken) neck

Flask with intact neck

1

2

3

4

5

Investigation: Cells are the basic unit of life.

Observe the two petri dishes, and record information about their appearance.

Day

Petri dish (on left) containing agar plus nutrients

Petri dish (on right) containing agar without nutrients

1

2

3

4

5

Conclusion:
Use your data to answer the following questions. Use complete sentences, and be as detailed as possible.

How did scientists discover that all living things are made of cells?
How did Pasteur’s experiment with the flasks help disprove the idea that living things could just appear or come from nonliving things like water and air?
Why are nutrients needed for living things? Describe the difference between living and nonliving things.

Answers: 3

Show answers

Other questions on the subject: Biology

Biology, 21.06.2019 13:30, genyjoannerubiera

Ameadow ecosystem includes many species of grasses and small shrubs, several herbivores, and a few carnivores. a fungus colonizes the meadow and kills most of its vegetation. what is most likely to happen to the populations of herbivores and carnivores in the ecosystem? a. the populations of herbivores and carnivores will increase because there will be less competition for chemical energy. b. the populations of herbivores and carnivores will remain stable because the fungus cannot infect these organisms. c. the populations of herbivores will decrease because of vegetation loss, but the population of carnivores will remain stable. d. the populations of herbivores and carnivores will decline because less chemical energy will be stored in the ecosystem.

Answers: 1

continue

Biology, 22.06.2019 11:30, alvaradolm9723

Female luna moths (actias luna) attract males by emitting chemical signals that spread through the air. a male hundreds of meters away can detect these molecules and fly toward their source. the sensory organs responsible for this behavior are the comblike antennae visible in the photograph shown here. each filament of an antenna is equipped with thousands of receptor cells that detect the sex attractant. based on what you learned in this chapter, propose a hypothesis to account for the ability of the male moth to detect a specific molecule in the presence of many other molecules in the air. what predictions does your hypothesis make? design an experiment to test one of these predictions.

Answers: 1

continue

Biology, 22.06.2019 14:30, rallen1158

The human body needs energy in order to carry out life processes such as breathing. where does the body get this energy? a. from eating food b. from learning about new things c. from lying in the sun d. from sleeping

Answers: 1

continue

Biology, 22.06.2019 17:30, mrmendrala

The primary organisms involved in the process bacteria and fungi.

Answers: 1

continue

Do you know the correct answer?

Investigate each of the three components of cell theory to investigate from the corkboard in the vir...