on Monday we learned the correct way to answer a question. you first have to make a claim, then give evidence, then give your reasoning.
example:
question: is candy good for you?
answer: in terms of health, candy is not good. candy contains lots of sugars and artificial sweeteners, like Splenda. these sweeteners and sugars can damage your teeth, harm the stomach, and cause obesity.
Tuesday:
on Tuesday we learned what a generalization is. it is a simplified pattern or idea that you see from data
we also learned that bacteria growth has an exponential pattern-which means that the bacteria split to make more and more bacteria, like the paramecium video we saw.
Wednesday:
on Wednesday we talked about call functions for different parts of cells.
cell functions:
chloroplasts: creates food in plants, absorbs sunlight; photosynthesis
mitochondria: releases energy for the cell to use
golgi apparatus: like a post office-looks at package, tags it, sends it where it needs to be
ribosomes: decodes RNA (ribo nucleic acid) and helps create proteins
cytoplasm: holds organells in place; things move through it to get to other places of the cell
rough ER: produces proteins; transportation connection between nucleus and cell
lysosomes: breaks down cellular waste and deals with cell death
nucleus: responsible for cell functions by using DNA codes and cellular reproduction
cell membrane: outer covering of the cell that protects, keeps cell in tact, controls what goes in and out
vacuole: stores food and waste
centrosome: involved in cellular reproduction
cell wall: protects the plant cell, provides structure, made of cellulose*
*anything that ends in "ose" means sugar
flagella/cillia: helps the cell move-locomotion
Thursday:
on thursday we talked about how a cell is made
atoms-molecules-macro molecules-organelles-many organelles-whole cell-tissue-
organs-organ system-complex organism
we also started talking about DNA and what it is:
DNA makes you an individual and it is what makes you look like your family
Friday:
on Friday we talked more about DNA
- finger prints-everyone's is different
- nucleic acids are part of DNA
- somewhat related to RNA
- stands for dioxyribose nucleic acid
- shape: double helix-spiral, latter, connections in the middle
DNA is like a directory-it tells everything what to do
this is a strand of DNA
the two strands on either side are sugar strands. the lines between the sugar strands are nitrogen based pairs that are connected by hydrogen bonds. they are very weak, but are supposed to be so that they can make copies before reproduction
this is what we did in science this week, and i learned a lot about cell parts and their functions and DNA. can't wait till next week!
~*Mary*~
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