p53 and Cancer Prevention
It serves as a
of its role in
50% of cancer cases.
p53 is known as the "guardian angel of the genome." p53 is
expressed when a cell's DNA is damaged. The p53 protein
functions as a transcription factor for several g
Clade Lophotrochozoa (continued)
Gastritrichs are abundant residents in the mud of ponds and lakes throughout the
world. Surprisingly little is known about their biology, however. Typical densities of
gastrotrichs in the m
Familiarize yourself with each of the following components of a microscope. Be sure you know
what each will do for you.
Coarse focus adjust:
Fine focus adjust:
Coarse focus adjust:
Introduction Phylum Platyhelminthes
Today you will be learning about the Platyhelminthes or flatworms. You wanted three
germ layers, and youve finally got it! We are
entering the territory of triploblastic animals
with ectoderm, mesoderm, a
Chapter 36 - Transport in Vascular Plants
Chapter 36 Transport in Vascular Plants
Overview: Pathways for Survival
The algal ancestors of plants obtained water, minerals and CO2 from the water in which
they were completely immersed.
Chapter 39 - Plant Responses to Internal and External
Overview: Stimuli and a Stationary Life
At every stage in the life of a plant, sensitivity to the environment and coordination of
responses are evident.
Plants can sense gravity and the dir
Chapter 44 Osmoregulation and Excretion
Overview: A Balancing Act
The physiological systems of animals operate within a fluid environment.
Metabolism also poses the problem of disposal of wastes.
The relative concentrations of water and solutes must b
Concept 42.5 Gas exchange occurs across specialized respiratory surfaces
Gas exchange is the uptake of molecular oxygen (O2) from the environment and the
discharge of carbon dioxide (CO2) to the environment.
While often called respiration, this process
Chapter 30 - Plant Diversity II: The Evolution of Seed Plants
Concept 30.1 The reduced gametophytes of seed plants are protected in ovules and pollen
A number of terrestrial adaptations contributed to the success of seed plants.
Brine Shrimp Lab
Brine Shrimp Introduction:
Brine shrimp (Artemmia) belongs to the phylum Arthropoda and class Crustacea. They
are native to extremely salty water such as the Great Salt Lake and the salt flats surrounding the
San Francisco Bay. They can l
Porifera, Cnidaria & Ctenophora
Welcome to multicellularity and the first
of the metazoa (animals)! Poriferans, or sponges, are
thought to be direct descendants of protists, but their
phylogeny is poorly understood and still under