Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
20 Cards in this Set
- Front
- Back
|
What is the cell theory?
|
all living things are composed of cells, and new cells arise only from preexisting cells
|
|
|
What purpose would the size of a cell being small be beneficial?
|
so nutrients and wastes can more easilly enter and leave the cell through its surface. (Also explains why cells divide frequently to maintain their small size.)
|
|
|
cells are typically small why?
|
so nutrients and wastes can more easily enter and leave the cell through its surface.
|
|
|
Do cells have small or large surface area?
|
Large
|
|
|
How are cells organized?
|
classified as either prokaryotic or eukaryotic
|
|
|
What type of cell is "pre-nucleus"
|
prokaryotic
|
|
|
what type of cell is defined as having a "true nucleus"
|
eukaryotic
|
|
|
Which type of cell does not have a nucleus?
|
prokaryotic
|
|
|
What are some similarities between a prokaryote and a eukaryote?
|
Have a plasma membrane, contain cytoplasm which contains organelles (2 types for prokaryotic, many different types for eukaryotic)
|
|
|
Which type of cell only has one or two types of organelles?
|
prokaryotic cells
|
|
|
What are organelles?
|
defined as small structures that perform specific functions.
|
|
|
What is a semifluid medium that contains water and various types of molecules suspended or dissolved in the medium?
|
cytoplasm
|
|
|
What is the cytoplasm?
|
a semifluid medium that contains water and various types of molecules suspended or dissolved in the medium
|
|
|
What accounts for the semifluid nature of the cytoplasm?
|
the presence of proteins
|
|
|
Proteins account for what characteristic of the cytoplasm?
|
semifluid nature
|
|
|
What does the cytoplasm contain?
|
organelles
|
|
|
Eukaryotic cells have many different types of what that perform specific functions?
|
organelles
|
|
|
Prokaryotic cells only have one or two types of what that perform specific funcitons?
|
organelles
|
|
|
What is the most important organelle with the eukaryotic cell?
|
Nucleus
|
|
|
What is the nucleus?
|
a membrane-enclosed structure where DNA is found
|
