Simple Electrical Circuits

ELECTRICITY: ELECTRICAL CIRCUIT: simplified animation of the movement of electrons (the opposite of conventional current) in a simple electric circuit consisting of a battery, a switch and a light bulb.

ELECTRIC CURRENT is the flow of charge. Conventionally this is the flow of positive charge. However, in a simple circuit such as that illustrated the current in the wire is composed of electrons that flow from the negative pole of the battery (the cathode at the bottom of the battery) and return to the positive pole (the anode at the top of the battery, marked by a +). The diagram at the left shows the same circuit as the one in the animation but in a standardised diagrammatic form (i.e. it's a circuit diagram).


http://www.rkm.com.au/animations/animation-electrical-circuit.html

DNA MODELS

DNA
A nucleic acid that carries the genetic information in the cell and is capable of self-replication and synthesis of RNA. DNA consists of two long chains of nucleotides twisted into a double helix and joined by hydrogen bonds between the complementary bases adenine and thymine or cytosine and guanine. The sequence of nucleotides determines individual hereditary characteristics.

NOTE: TWO DAYS TO MAK THIS MODEL!!!!!!!!
YOU CAN USE DIFFERENT MATERIALS.

Classwork/ homework

Copy or print the following questions and answer them in separate sheet of paper.

Answer the following questions.


Define cells, tissues, organs, and systems in you own words.

Q 1: A (tissue, organ, system) is a group of the same kinds of cells that work together.
Choose the right answer.
tissue
organ
system

Q 2: Some tissues and organs work together like the members of the team. The parts that work together are called a _____________.
system
group
cell

Q 3: Different tissues work together to form _________ .
cells
system
organs

Q 4: Brain, heart and lungs are some of the important _______________ in a body.
cells
system
organs
tissues

Q 5: In a body there are many different kinds of cells.
false
none
true

Q 6: A lot of cells of the same kind join together to form a __________ .
organs
tissue
cells
system