Define Me!
Atom
What is the smallest chemical unit of matter?
What does DNA provide to a living organism?
DNA provides information
Fill in the blank.
Metabolism produces energy, carbon dioxide and ______________?
Water
FREE!
EXTRA POINTS!!!!!
-O-O-
L
U
Molecule
What are two or more atoms linked together to make a substance with unique properties?
Name 2 of the 4 criteria for life
1. All life forms have a method by which they extract energy from their surroundings and convert it into energy that sustains them.
2. All life forms reproduce
3. All life must have DNA
4. All life forms can sense changes in their surroundings and respond to those changes.
What 2 things are produced by photosynthesis?
(Hint: Be sure to use their proper chemical names:)
Glucose and Oxygen
If a certain type of organism produces lots of offspring, what can you conclude about the level of danger that organism experiences throughout the course of its life?
Organisms that produce lots of offspring tend to live very dangerous lives.
Photosynthesis
What is the process by which green plants and some other organisms use the energy of sunlight and simple chemicals to produce their own food?
How is information stored in DNA?
Information is stored in DNA as a sequence of nucleotide bases.
What is the name of the chemical that plants make for food?
GLUCOSE
Every once in a while, a female cat will be born sterile. This means they cannot have kittens. Does this mean that the cat is not alive, because it cannot reproduce?
No, the cat is still alive because its cells are still reproducing
Metabolism
What is the sum total of all processes in an organism that convert energy and matter from outside sources and use energy and matter to sustain the organism's life functions?
An organism's receptors aren't working. Which of the 4 criteria of life will be unable to perform?
All life forms can sense changes in their surroundings and respond to those changes. Because the receptors sense change in the surroundings, this life criteria can't be performed.
What is the name of the chemical that plants often store their food as?
STARCH
How many basic kinds of cells are there? Name them.
3. Animal cells, Plant cells, and cells from bacteria
Receptors
What are special structures that allow living organisms to sense the conditions of their internal or external environment?
Which nucleotide bases match with thymine?
Adenine
What 2 things are required for metabolism?
Food and Oxygen
if a scientist examined a cell from a mouse, a cell from a leaf, and a cell from a cat, how many different basic kinds of cells will she see?
Then scientist will see 2 basic kinds of cells. Plant cells from the leaf, and animal cells from the mouse and cat.
Cell
What is the smallest unit of life in creation?
One half of a portion of DNA has the following sequence of nucleotide bases:
thymine, cytosine, guanine, adenine, guanine
What is the sequence of nucleotide bases on the other half of this portion?
adenine, guanine, cytosine, thymine, cytosine
Metabolism usually produces 3 things. Energy is one of them. What are the other two?
Carbon Dioxide and Water.
Even if a person never has children, that person still reproduces. How?
That person's cells are reproducing all the time