YV4-cells-active transport

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?
A
light microscope, because of its high resolving power
B
transmission electron microscope, because of its high magnifying power
C
transmission electron microscope, because of its high resolving power
D
light microscope, because the specimen is alive
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Slide 1: Quiz
BiologieMiddelbare schoolvwoLeerjaar 4

Cette leçon contient 12 diapositives, avec quiz interactifs, diapositives de texte et 1 vidéo.

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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?
A
light microscope, because of its high resolving power
B
transmission electron microscope, because of its high magnifying power
C
transmission electron microscope, because of its high resolving power
D
light microscope, because the specimen is alive

Slide 1 - Quiz

Which of the following structures is found in eukaryotic but not prokaryotic cells?
A
cell membrane
B
mitochondria
C
ribosomes
D
DNA

Slide 2 - Quiz

Bacterial cells are prokaryotic; unlike a typical eukaryotic cell they _____.
A
have a smaller nucleus
B
lack chromosomes
C
have no membrane-bounded organelles in their cytoplasm
D
have no ribosomes

Slide 3 - Quiz

Which of the following features do prokaryotes and eukaryotes have in common?
A
mitochondria, cytoplasm, cell membrane
B
ribosomes, cell membrane, cytoplasm
C
nucleus, cell membrane, ribosomes
D
mitochondria, ribosomes, cytoplasm

Slide 4 - Quiz

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

A
muscle cells in the legs of a marathon runner
B
photosynthetic cells in the leaves of a tree
C
bacterial cells that are growing on sugars
D
non-dividing cells in the skin on your finger

Slide 5 - Quiz

Which of the following processes includes all others?
A
osmosis
B
diffusion of a solute across a membrane
C
facilitated diffusion
D
passive transport

Slide 6 - Quiz

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?
A
carbon dioxide
B
glucose
C
sodium ion
D
DNA

Slide 7 - Quiz

A single plant cell is placed in an isotonic solution. Salt is then added to the solution. Which of the following would occur as a result of the salt addition?
A
The added salt would enter the cell, causing the cell to take up water and swell.
B
Water would enter the cell by osmosis, and the cell would swell.
C
Water would leave the cell by osmosis, causing the volume of the cytoplasm to decrease.
D
There would be no osmotic movement of water in response to the added salt.

Slide 8 - Quiz

If a red blood cell and a plant cell were placed in seawater, what would happen to the two types of cells?
A
The red blood cell would burst, and the plant cell would shrink.
B
Both cells would lose water; the red blood cell would shrivel, and the plant plasma membrane would pull away from the cell wall.
C
Both cells would gain water by osmosis; the red blood cell would burst, and the plant cell would increase in turgor pressure.
D
The red blood cell would shrink, and the plant cell would gain water.

Slide 9 - Quiz

Slide 10 - Vidéo

Active transport
  • The cell invests energy 
  • Often against the concentration gradient 
  • For example:
       -Pumps in the membrane
       -Endocytosis

Slide 11 - Diapositive

Slide 12 - Diapositive