Small clusters of cells in a volvox, specialized for reproduction.
Form connections between adjacent cells
Complex colony where individual cells are interconnected by cytoplasmic strands to form a sphere. Has small clusters of cells: daughter colonies.
Composed of groups of specialized cells: tissues, that together perform particular functions for the organism.
Groups of specialized cells that may be grouped to form organs.
Organs may be grouped to this.
In plant cells, organized contents of the cell, exclusive of the cell wall.
An aquatic plant commonly grown in freshwater aquaria.
Central Vacuole in plants
Membrane-bound sac w/in the cytoplasm that is fille with water and dissolved substance. Serves to store metabolic waste and gives the cell support by means of turgor pressure
Green, spherical organelles that carry the pigment of cholorphyll that is involved in photosynthesis.
AKA cyclosis: light heats up the cells, cytoplasm and chloroplasts may begin to move around central vacuole
Nucleus in plants
Spherical transparent organelle w/in cytoplasm. Controls cell metabolism and division.
What dye did we use for human epithelial cells?
Occur on the outside of animals and serve to protect the animals from water loss, mechanical injury, and foreigh invaders. Also line interior cavities and ducts in animals
How do Epithelal cells look like?
Thin, flat cells, that can be folded over on themselves.
Animals can be categorized into four major tissues groups:
Epithelial, connective, muscle, and nervous tissue
tentative answer to a question Must be falsified and Testable
What does Benedict's Test test for?
What were the two ways osmolarity was tested for in potato?
Change in Volume and Weight
Cells that live together in groups, and are to some degree dependent on one another. Ex. scenedesmus-simple colony Volvox- complex colony
Which objective lens should be in use when the revolving turret has been placed on 40?
40x objective lens high power lens
What substrate did you use to test for the presence/absence of starch?
How did you know if starch is present or absent
Present= dark purple color Absent= Yellow Amber Color
Is PTU competitive or comparitive? Y?
Noncompetitive b/c even if you add more catachol the reaction will not occur.
What stain was used on the slide when observing the epithelial cells under the microscope
One variable that will be measured or counted or observed in response to the experimental conditions.
One variable or experimental condition that is manipulated and considered the most important variable by which to test the investigator's hypothesis.
variables that must be kept constant during the course of the experiment so that the selected independent variable is the one affecting the dependent variable
a group in which the independent variable are held at an established level or is omitted. Serves as a benchmark that allows scientist to decide whether the predicted effect is really due to the independent variable.