Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/3

Click to flip

3 Cards in this Set

  • Front
  • Back
  • 3rd side (hint)

What are the four things that animal and plant cells have in common?

A nucleus, a cytoplasm, the cell membrane and the mitochondria

Remember that plants photosynthesis and animals don't.

Describe bacteria cells.

Bacteria are microscopic, unicellular organisms. They don't have a nucleus. They have two types of DNA which are chromosomal (long circular chromosome) and plasmid (smaller loops of DNA). They also have a cell wall. They can only be seen with a powerful electron microscope. They have a flagellum which is a long hair-like structure which rotates to make the bacterium move.

Describe the structure of DNA.

A molecule DNA has two strands coiled together in the shape of a double helix. The two strands are held together by chemicals called bases. There are 4 different bases called adenine (A), guanine (G), cytosine (C), and thymine (T). The rule is that A pairs with T and C pairs with G. This is called base pairing. Thee bases are held together by weak hydrogen bonds.

Remember to talk about base pairs.