Module 9 Flashcards
1a. Define: Atom
The smallest chemical unit of matter
1b. Define: Molecule
Two or more atoms linked together to make a substance with unique properties
1c. Define: Photosynthesis
The process by which green plants and some other organisms use the energy of sunlight and simple chemicals to produce their own food
1d. Define: Metabolism
The sum total of all processes in an organism that convert energy and matter from outside sources and use that energy and matter to sustain the organism’s life functions
1e. Define: Receptors
Special structures that allow living organisms to sense the conditions of their internal or external environment
1f. Define: Precocial
A term used to describe offspring that are born able to hear, see, move about, regulate body temperature, and eliminate waste without a parent’s help
1g. Define: Altricial
A term used to describe offspring that are born without at least one of the following abilities: hear, see, move about, regulate body temperature, or eliminate waste
1h. Define: Cell
The smallest unit of life in creation
- What are the four criteria for life:
I. All life forms contain deoxyribonucleic acid, which is called DNA
II. All life forms have a method by which they extract energy from the surroundings and convert it into energy that sustains them.
III. All life forms can sense changes in their surroundings and respond to those changes.
IV. All life forms reproduce.
- What does DNA provide to a living organism?
information
- Compared to other molecules, is DNA big or small?
big
- Does DNA store its information more efficiently or less efficiently than a computer?
significantly more efficient
- DNA is made up of two basic parts: the backbone and the nucleotide bases.
a. Which part stores the information?
b. Which part forms the double-helix structure?
a. The nucleotide bases
b. The backbone
- Which nucleotide base will link to adenine? Which will link to cytosine?
Thymine
- One half of a portion of DNA has the following sequence:
cytosine, guanine, adenine, guanine, thymine, thymine
What is the sequence of nucleotide bases on the other half of this portion?
guanine, cytosine, thymine, cytosine, adenine, adenine