Category 1 DOL

Euglena are unicelled organisms that live in pond water. They move around using a flagella and can perform photosynthesis when needed. They contain many organelles . What type of cells are they?

• Animal Cell

• Prokaryotic Cell

• Eukaryotic Cell

• Plant Cell

Which is true of prokaryotic and eukaryotic cells?

• Prokaryotic cells are larger than eukaryotic cells.
• Eukaryotic cells do not have nuclei, and prokaryotic cells do have nuclei.
• Prokaryotic cells lack membrane-bound organelles, and eukaryotic cells contain membrane-bound organelles.
• Eukaryotic cells are simpler than prokaryotic cells.

A fossilized cell is discovered, and evidence suggests it reproduced on its own and had DNA, but a membrane did not enclose its DNA. Which type of organism would this most likely be?

• prokaryote
• eukaryote
• plant cell
• animal cell

Reasons that viruses are considered to be nonliving is because

• They are not cellular
• They cannot reproduce on their own
• They cannot make proteins
• all of the above

What do viruses have in common with living cells? They both...

• store genetic information
• have chloroplasts
• use glucose for cellular respiration
• have endoplasmic reticulum

What is the first step of the virus reproduction cycle?

• The viruses genetic material (DNA) starts to take over the functions of the cell
• The host cell bursts open, releasing the new viruses
• The virus injects its genetic material into the cell
• A virus attaches to the surface of a host cell

What is one way that a lysogenic infection differs from a lytic infection?

• A lysogenic virus does not act on bacteria as a lytic virus does.
• A lysogenic virus can remain in the host DNA for a longer period without becoming active.
• A lysogenic virus contains RNA instead of DNA.
• A lysogenic virus directs the production of new viruses right away.

What is shown here?

• Lysogenic Cycle
• Lytic Cycle
• Binary Fission
• Conjugation

Which biomolecule helps LARGE molecules cross the membrane?

• phospholipids

• carbohydrates

• nucleic acids

• proteins

How does the cell membrane help maintain homeostasis in each cell?

• The cell membrane allows all substances to pass through freely

• The cell membrane controls the movement of substances in and out of the cell

• The cell membrane provides energy for the cell

• The cell membrane produces proteins necessary for cell function