DNA
T/F – DNA is unique in that it creates things opposite of it
false
What is the basic unit of all living things?
a cell
How many cells do most protozoa have?
one (They are unicellular.)
What type of human cells carry oxygen?
red blood cells
What color pigment is plant chlorophyll?
green
What shape do DNA molecules have?
a large twisted ladder or helix
What is the main tool used to view cells?
a microscope
What does multicellular mean?
The animal contains many cells
What type of human cells carry messages?
nerve cells
What substance are plant walls usually composed of?
cellulose
What makes offspring look like its parent?
DNA
What are tissues?
cells that are similar in structure and function
What are the 4 types of multicellular animal tissue?
connective, epithelial, muscular, nervous
What type of human cells provide support and protection?
bone cells
How do gases get in and out of plants?
It passes through the plant’s leaves
Where are long strands of chromatin usually found?
within the nuclear membrane
What is the main compound in a cell’s cytoplasm?
water
What are the 4 types of plant tissue?
connective, epidermal, storage, support
What type of human cells help the body’s movement?
muscle cells
What do animal cells have that plant cells do not?
bone, muscle, and nerve cells
What 3 things make up a cell’s nucleus?
nuclear membrane, chromatin, nucleolus
What is the difference between prokaryote and eukaryote cells?
Prokaryote have 2 things and eukaryote have those plus nuclei
How many layers of phospholipid molecules are around a cell membrane?
two
What type of human cells fight infections?
white blood cells
What do plant cells have that animal cells do not?
cell walls, chloroplasts, chlorophyll