Prokaryotic & Eukaryotic Organisms

can be found in both prokaryotic cells and eukaryotic cells?

DNA RNA Ribosomes

Which of the following is true about the genetic material of eukaryotes and prokaryotes?

Eukaryotes and prokaryotes both have DNA, but it is only enclosed in a membrane in eukaryotic cells.

How does the size of a eukaryotic organism normally compare to the size of a prokaryotic organism?

Eukaryotes are usually much larger than prokaryotes.

Which of the following is true of their cellular genetics?

Eukaryotic DNA is linear, whereas most prokaryotic DNA is circular.

How does the DNA in prokaryotic cells differ from the DNA in eukaryotic cells?

II. Prokaryotic DNA is not separated from the rest of the cell by a nuclear membrane. III. Prokaryotic DNA is not packaged into chromosomes.

Which of the following is true about cells?

In general, prokaryotic cells do not have a true nucleus or membrane-bound organelles, whereas eukaryotic cells contain both a nucleus and organelles enclosed by membranes.

The reddish spot on the right side of the euglena is an eyespot. What is the function of the eyespot?

It detects light, which allows the euglena to obtain energy and make food.

Which of the following describes the fundamental difference between prokaryotic and eukaryotic cells?

Prokaryotic cells do not have a true nucleus or membrane-bound organelles.

How would the same cells look if they were viewed using a light microscope instead?

The light microscope would show less detail of the cells' structure.

Which of the following is true of prokaryotic cells?

They function as individual organisms.

Which of the following is the best way to distinguish very simple organisms, such as bacteria, from more complex organisms, such as protists, plants, and animals?

by cell type, such as prokaryotic versus eukaryotic

cells can be differentiated by their

cell structures

Many bacterial cells exhibit positive ---- by directing their movement toward higher concentrations of glucose molecules that the cell can use for food.

chemotaxis

Many protozoa have tiny hair-like structures that beat back and forth to aid a protozoa's movement. What are these hair-like structures called?

cilia

cilia is used for

locomotion

Which of the following best explains the function of a contractile vacuole?

maintains homeostasis by regulating an organism's water content

What are two functions of cilia?

movement and obtaining food

The life forms exhibiting the simplest cellular structure are _______.

prokaryotes

What cell part does an amoeba use for locomotion?

pseudopod

Which of the following may be found in either type of cell?

ribosomes

What is the purpose of the flagella?

to propel the cell through liquid