Photosynthesis
CHLOROPLASTS All of the "black dots" in the picture represent chloroplasts, which are the cell organelles in plant cells where the chemical reactions of photosynthesis take place. a) root hairs - ON ROOTS, NOT NEAR LEAVES b) xylem - TUBES THAT TRANSPORT WATER IN THE PLANT c) lenticels - OPENING ON WOODY STEMS FOR GAS EXCHANGE d) stomates 3
Interactive Cell Models
Here are some KEY TERMS to help you think, explore and search for similarities and significant differences that have become the characteristics of eukaryote (animal, plant) and prokaryotic (bacteria) cells
In sexual reproduction, a specialized type of cell division called meiosis occurs that results in the production of sex cells, such as gametes in animals (sperm and eggs), which contain only one member from each chromosome pair in the parent cell. Cellular division and differentiation produce and maintain a complex organism, composed of systems of tissues and organs that work together to meet the needs of the whole organism
Photosynthesis Respiration and Plant Growth
Thus, all organisms are directly or indirectly dependent on green plants which synthesize food and release oxygen through photosynthesis, making it the most important life sustaining process of nature. Although photosynthesis can be improved by maximizing growth factors, genetics plays a major role in the plants programmed ability to conduct photosynthesis
Where Does Plant Respiration Take Place? Does Cell Respiration Only Take Place in Plant Cells? Cellular respiration is a metabolic process essential to the functioning of all cells. The cell makes a tiny amount of ATP during glycosis, but the primary reason for this step is the creation of intermediary chemical substances from glucose
Plant cells vs. Animal cells - Biology Online
A plant cell is bounded by a cell wall and the living portion of the cell is within the walls and is divided into two portions: the nucleus, or central control center; and the cytoplasm, a fluid in which membrane bound organelles are found. The proteins synthesized on ribosomes bound to granular endoplasmic reticulum are transferred from the lumen (open space inside endoplasmic reticulum) to the golgi apparatus for secretion outside the cell or distribution to other organelles
6. Cell Energy (photosynthesis and respiration)
None of these experiments require expensive equipment such as metabolism chambers or oxygen meters although those are great tools if you can afford them. Rather than the detailed lesson plans provided elsewhere at My Science Box, each experiment only contains a short background, materials, procedure, and going further section
Plants make their own food thru the process of photosynthesis
This is why overly wet or saturated soils are detrimental to both root growth and function, and the decomposition processes carried out by microorganisms in the soil. Water will continue to flow in the direction of the highest salt concentration until the salts have been diluted to the point that the concentrations on both sides of the membrane are equal
PICTURE endosymbiosis Theory that attempts to explain the origin of the DNA-containing mitochondria and chloroplasts in early eukaryotes by the engulfing of various types of bacteria that were not digested but became permanent additions to the ancestral "eukaryote". epithelial tissue Cells in animals that are closely packed in either single or multiple layers, and which cover both internal and external surfaces of the animal body
Biology4Kids.com: Animal Systems: Muscular System
Did you know that your muscular system is made up of three different types of muscular tissue? You have smooth, cardiac, and voluntary muscle tissue in your body
Interactive Eukaryotic Cell Model
Smooth ER plays different functions depending on the specific cell type including lipid and steroid hormone synthesis, breakdown of lipid-soluble toxins in liver cells, and control of calcium release in muscle cell contraction. Smooth Endoplasmic Reticulum: Throughout the eukaryotic cell, especially those responsible for the production of hormones and other secretory products, is a vast network of membrane-bound vesicles and tubules called the endoplasmic reticulum, or ER for short
Autumn Leaves and Fall Colors - Why do autumn leaves change color?
Did you ever wonder how and why a fall leaf changes color? Why a maple leaf turns bright red? Where do the yellows and oranges come from? Table of Contents Why Do Leaves Change Color? Photosynthesis Autumn Preparations for Winter Learn More: Surviving Winter Easy Reading Projects To answer those questions, we first have to understand what leaves are and what they do
placental mammals One of three groups of mammals that carry their young in the mother's body for long periods during which the fetus is nourished by the placenta. During this time the atmosphere and oceans formed, life originated (or possibly "colonized" Earth), eukaryotes and simple animals evolved and by the end of the precambrian they began to accumulate hard preservable parts, the common occurrence of which marks the beginning of the Cambrian
Algae Fuel In the search for alternatives to gasoline, are algae the answer? From Pond Scum to Power In this animated primer, learn why algae and other plants make oil, and how algae oil gets converted to biodiesel. The Perfect Hunter Could social intelligence be the key to hyenas' deadly hunting skills? Sexual Cannibalism Biologist Maydianne Andrade says that the gruesome mating behavior of some spiders is a lesson in evolution
The electrons and hydrogen ions are used, and some of the oxygen may get used for respiration, but a lot of them just go back out to the atmosphere where you and I may breath them with our very own gas exchange systems. One of the hard to understand aspects of light, is that it appears to travel as either a wave or a particle depending on how you happen to be looking at it
The animal kingdom is unique among eukaryotic organisms because most animal tissues are bound together in an extracellular matrix by a triple helix of protein known as collagen. The process of cell fractionation enables the scientist to prepare specific components, the mitochondria for example, in large quantities for investigations of their composition and functions
Plant and animal cells are both eukaryotic cells, so they have several features in common, such as the presence of a cell membrane, and cell organelles, like the nucleus, mitochondria and endoplasmic reticulum. Cellular respiration occurs in mitochondria on animal cells, which are structurally somewhat analogous to chloroplasts, and also perform the function of producing energy
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