Microscopes
What type of microscope uses light to magnify images in 2D?
Compound (light) microscope
What organelle is responsible for gas exchange, allowing only certain substances inside and outside the cell?
cell membrane
What type of transport requires ATP?
active
Who was the man that first observed cells?
Robert Hooke
What microscope shows an upright, 3D image of larger, opaque specimens?
dissecting microscope
What organelle found in plant cells is responsible for photosynthetic processes (making food for the cell)?
chloroplast
High to low concentration is the flow of what transport?
passive
Which one of the following statements is part of the cell theory?
-cells come from preexisting cells
-cells have different functions
-living things are not made of cells
-cells are considered nonliving
cells come from preexisting cells
Scanning Electron Microscope
What type of cell lacks a nucleus and membrane bound organelles?
prokaryotic
What is the movement of water from high to low concentration?
osmosis
What piece of evidence would support part of the cell theory?
-rocks and nonliving things are made of cells
-cells are observed converting energy to other forms
-a microscope is necessary to make observations of cells
-the origin of all cells can be traced to previous cells
origin of all cells can be traced to previous cells
Which of the following would not be important when viewing a specimen under a microcope?
- type of material
-age of the specimen
- size of specimen
- magnification required to view
age of specimen
Maintaining turgor pressure in plant cells and providing extra storage is the function of what organelle?
vacuole
When a cell is placed in a solvent with high concentration of solute, what will happen to the cell?
The cell will shrink (hypertonic)
What is considered a well-supported explanation for a natural occurrence?
theory
What lens objective should the microscope start on and, when finished, be placed back on?
4x (scanning lens)
What organelle produced cellular energy (atp)?
mitochondria
When a cell is placed in a solvent with a low concentration of solute, what will happen to the cell?
the cell will expand (hypotonic)
What is considered a well-supported description of a natural occurrence?
law