Bio unit 3 Cells
How is the total power magnification calculated?
Multiply the eyepiece power times the objective lens power.
When using a compound light microscope with a 10x eyepiece and objectives of 5x, 10x, and 50x, what is the highest possible magnification for that microscope?
500x
Which statement about active transport is most accurate?
Active transport utilizes energy from ATP molecules.
What is a similarity among animal, plant, and bacterial cells?
All have ribosomes.
There are two types of living organisms: prokaryotes and eukaryotes; Which statement is correct regarding the organism shown in the diagram? (unicellular prokaryote)
As a unicellular prokaryote, this organism must carry out all of life's activities.
Which statement most accurately describes bacterial cells?
Bacterial cells have DNA, but they do not have a nucleus.
active transport
Energy-requiring process that moves material across a cell membrane against a concentration difference
Which statement most accurately identifies the characteristics that distinguish eukaryotic cells from prokaryotic cells?
Eukaryotic cells are significantly larger and more complex cells.
The post office functions to process, package, and distribute. Which cell organelle has a similar function?
Golgi apparatus
Which statement most accurately describes how an object appears when viewed through a light microscope?
It appears larger, upside-down, and backwards.
A human red blood cell is placed in a highly concentrated salt solution. What change will be observed in the osmotic pressure and the cell size after some time?
Osmotic pressure inside the cell will decrease, and as a result, the cell will shrink.
Which organelle is found in both prokaryotes and eukaryotes?
Ribosome
Endoplasmic reticulum (ER) is found in both animal cells and plant cells. There are two types of ER, smooth and rough. Smooth ER produces lipids, while rough ER produces proteins.
Smooth ER lacks ribosomes on its surface.
Which situation would most likely occur if all the ribosomes in a cell were destroyed?
The cell would no longer synthesize chains of amino acids.
A cell is unable to synthesize proteins. What most likely caused this?
The ribosomes have been destroyed.
When viewing a specimen using a light microscope, what appears to happen to the specimen when the slide is moved to the right?
The specimen appears to move to the left.
A scientist observing a cell under a microscope observes that the cell has many organelles, is surrounded by a cell wall, and produces oxygen. What prediction can be made about this cell?
This is a plant cell that was found in a leaf.
Which statement describes how to transport a microscope properly?
Use one hand to hold the arm and the other hand to support the base.
What evidence would prevent scientists from classifying viruses as living organisms?
Viruses require a host cell to reproduce.
The concentration of glucose in solution A is 5%, and the concentration of glucose in solution B is 15%. Which statement correctly describes the movement of water between the two solutions?
Water will diffuse from solution A to solution B.
Which organism could be considered nonliving because it cannot carry out all the functions of life on its own as described in the cell theory?
a virus
Which organism is a prokaryote: amoeba, bacterium, butterfly, daisy
bacterium
What structure is found in animal, plant, and bacterial cells?
cytoplasm
By what process does the cell use proteins to transport large molecules, such as glucose, across the plasma membrane from areas of high to low concentration?
facilitated diffusion
Membrane-bound organelles would be found in which type of cells?
eukaryotic cells only
facilitated diffusion
process of diffusion in which molecules pass across the membrane through cell membrane channels
Vesicles are important membrane-bound organelles that serve many roles in the cell. Which sequence represents a correct pathway that vesicles would follow in helping to deliver a protein for export from the cell?
ribosome → Golgi apparatus → cell membrane
