Origin of life, Cell theory and microscopes

A scientist wants to observe the movement of living paramecia in pond water. Which microscope should be used?

• Scanning electron microscope

• . Transmission electron microscope

• Compound light microscope
  
  

• Dissecting microscope

. Which type of microscope would give a 3D view of the surface of a small, nonliving insect?

• Dissecting microscope

• Scanning electron microscope

• Compound light microscope

• Transmission electron microscope

A student wants to examine the internal structure of a cell, such as the mitochondria. Which microscope would be most appropriate?

• . Scanning electron microscope

• Compound light microscope

• Transmission electron microscope

• Dissecting microscope

The image below shows a 3D black-and-white image of a virus. Which microscope most likely produced this image?

• Scanning electron microscope

• Compound light microscope

• Transmission electron microscope

• Dissecting microscope

A biologist needs to perform a frog dissection and observe the external organs in color. Which microscope would be best?

• . Scanning electron microscope

• Transmission electron microscope

• . Compound light microscope

• Dissecting microscope

Which statement correctly compares a scanning electron microscope (SEM) and a transmission electron microscope (TEM)?

• SEMs show internal structures; TEMs show surface details

• . SEMs show surface details; TEMs show internal structures

• SEMs use light; TEMs use electrons.
  
  

• SEMs can view living specimens; TEMs cannot

Which microscope is most appropriate for observing color and texture on the surface of a living beetle?

• . Dissecting microscope

• Scanning electron microscope

• Transmission electron microscope
  
  

• ·         Compound light microscope

Match the following

• Objective Lens

• This controls the amount of light that passes through a slide or specimen while under the microscope; it is located underneath the stage

• Light Source

• Changes the magnification of the microscope

• Stage

• On the microscope where the slide or specimen "sits"

• Diaphragm

• Used to look through the microscope has a magnification

• Eyepiece

• Illuminates the object/specimen/slide on the microscope

One of the accepted scientific theories describing the origin of life on Earth is known as chemical evolution. According to this theory, which of the following events would need to occur first for life to evolve?

• onset of photosynthesis

• 
  Synthesis of organic molecules

• origin of genetic material

• formation of the plasma membrane

Which types of organisms developed first due to the early environmental conditions on Earth?

• prokaryotic and aerobic

• eukaryotic and aerobic

• prokaryotic and anaerobic

• eukaryotic and anaerobic