Amphibians and Reptiles
I. Characteristics of Amphibians:
A. Usually a smooth moist skin
B. Aquatic eggs and gilled larvae
C. Metamorphosis takes over to convert gills to lungs.
D. Ectothermic- they are cold blooded.
E. MUST reproduce in moist
Ch. 12 Sponges
Phylum Porifera- the sponges
Sponges have different shapes and structures according to
the type of the sponge.
I. Characteristics of Sponges:
A. multicellular- the body of sponges is a loose aggregation of cells.
B. Body containi
A. Entirely aquatic; mostly marine.
B. Radial symmetry with no definite head.
C. Two stages in life cycle; Polyps and Medusae.
D. Body containing two layers: Epidermis and Gastrodermis- Thus
we say they are di
exons are parts of DNA that are converted into mature messenger RNA
(mRNA). The process by which DNA
in order for transcription to take place, the DNA sequence must ne read by
transcription factors. List of the parts od DNA involved:
Cellular respiration- the process by which cells covert the energy in food (usually
glucose) into usable ATP.
Terms to know
1. Oxidation- the loss of electrons
a. Compound becomes more positive
2. Reduction- the gain of electrons
Study Guide Unit 3 and 4:
The New World
1.) Italian navigator who discovered the New World in the service of Spain while looking
for a route to China (1451-1506)
Prince Henry the navigator
2.) Henry the Navigator 1394-1460.
A. atom a smallest unit of an element atoms are made of subatomic
particles protons (+), neutrons (neutral), and electrons (-)
matter is anything that has mass and volume
in an element there is a nucleus composed of atoms
nucleus there ar
Chapter 1: Characteristics of Business
Nature of business
A business- organization that produces or distributes
a good or service for profit
Profit- is the difference between earned income
(sales or revenue) and cost (expenses )
Profit = sales expenses