Wrap up for test V4

• Biologie
• Middelbare school
• vwo
• Leerjaar 4

Prokaryotic cells contain a nucleus and nuclear material

1. True
2. False

A researcher wants to film the movement of chromosomes during cell division. Which type of microscope should he choose and why is it the best choice?

1. light microscope, because of its high resolving power
2. transmission electron microscope, because of its high magnifying power
3. transmission electron microscope, because of its high resolving power
4. light microscope, because the specimen is alive

Which of the following structures is found in eukaryotic but not prokaryotic cells?

1. cell membrane
2. mitochondria
3. ribosomes
4. DNA

Bacterial cells are prokaryotic; unlike a typical eukaryotic cell they _____.

1. have a smaller nucleus
2. lack chromosomes
3. have no membrane-bounded organelles in their cytoplasm
4. have no ribosomes

Which of the following features do prokaryotes and eukaryotes have in common?

1. mitochondria, cytoplasm, cell membrane
2. ribosomes, cell membrane, cytoplasm
3. nucleus, cell membrane, ribosomes
4. mitochondria, ribosomes, cytoplasm

Which type of cell is most likely to have the most mitochondria?

1. muscle cells in the legs of a marathon runner
2. photosynthetic cells in the leaves of a tree
3. bacterial cells that are growing on sugars
4. non-dividing cells in the skin on your finger

Which one of the following molecules is most likely to diffuse freely across the lipid bilayer of the plasma membrane without the involvement of a transport protein?

1. carbon dioxide
2. glucose
3. sodium ion
4. DNA

Preparation

• Research usually starts with a question: the research question
• Goal of the research is to answer the question

Hypothesis

Expected answer to the research question

Often seen formats:

-Cause and effect: If....., then...

- Correlation: ....has a positive effect on...

- Differences: comparing two or more groups

Research plan

Different types of research:

Describing : collect data by observing

Experimental : testing hypothesis with experiment

- Control group

Developing : develop material/model/method

Designing experimental research

1. Determine variable to be experimentally changed
2. Design multiple groups:
   - Vary the variable between the groups
   - Try to include control group (eliminate variable)
   - Keep all other variables constant
3. Explain what will be measured, when, and how

Analysis results

• Displaying results in tables and graphs
• Drawing conclusion from results
• Comparing conclusion with hypothesis and analyse differences

Animal cells have the following:

1. A cell membrane
2. A cell membrane and a cell wall
3. A cell wall