BSCI124 Unit I Terms to Know

BSCI124 Unit I Terms to Know - BSCI124 Terms to Know...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
BSCI124 Terms to Know: Meristem = region of embryonic tissue capable of developing new parts of the plant Life Molecules – o 1. Carbohydrates (sugars, starches) o 2. Lipids (fat, oils, waxes) o 3. Proteins (amino acids) o 4. Nucleic Acids (DNA, RNA) Life’s molecules are… A) carbon-based B) made up of C, H, O, P, N C) created by smaller molecules that are built up D) function depends on structure, structure depends on function! o Carbohydrates: Organic molecules made of C, O, H Most abundant life molecule 3 types = monosaccharide o glucose (blood sugar), fructose (fruit), ribose (DNA RNA) disaccharides = two monosaccharides o sucrose (table sugar), maltose (2 monosaccharide), lactose (milk) polysaccharides = long string of monosaccharides o starch (energy storage), cellulose (plant cell walls) CnH2nOn Function of Carbohydrates: A) energy storage B) structure in plants C) acids, like nucleic and amino acids o Lipids: Made up of C, O, H (sometimes P) Fats and oils made up of 2 building blocks: 1. Glycerol 2. Fatty acids (single bonds = flat; ex. butter) (double bounds = bent; ex. oil) DO NOT dissolve in water Hydrophobic tails, hydrophilic heads Function of Lipids: A) high-energy food B) part of the cell membrane C) energy storage of lipids:
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
o i. monoglycerides (glycerol + fatty acid chain) o ii. Diglycerides (monoglyceride + 2 fatty acid chain) o iii. Triglyceride (diglycerides + 3 fatty acid chain) triglycerides have highest energy o Proteins Made up of C, H, O, S, N Building blocks of proteins are amino acids (there are 20) Function of Proteins Animal structure Building blocks of cells Enzymes = speed up the process Transport: help decide what makes it through the Plasma Membrane o Nucleic Acids Organic molecules made up of C, H, O, P, N Basic unit is a nucleotide, made of 3 parts: 1. Phosphate 2. Nitrogenous base 3. Sugar long chains of nucleotides (examples: DNA, RNA) nucleotide compound: ATP ATP = energy transfer/exchange o Functions of Nucleotides: Information storage (DNA, RNA) Energy carrier (ATP) Cell = basic building block of all living things o Each cell is functionally independent o Cell Theory: 1. Basic unit of life 2. Organisms are composed of cells 3. Cells are composed of other cells o Two Types of Cells: A) Prokaryotic Cells = bacteria cells, much older and smaller, have no organelles B) Eukaryotic Cells = cells of animals, plants, etc.; younger cells that are 10-100 times bigger than Prokaryotic cells that are made up of organelles o Difference between animal and plant cells: 1. Cell walls = protects and supports the cell, made out of cellulose primary cell wall = outermost wall secondary cell wall = second layer of cell wall plasma membrane
Background image of page 2
middle lamella = “paste” like substance that holds two different
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 11

BSCI124 Unit I Terms to Know - BSCI124 Terms to Know...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online