Sponge Research Paper

Discussion: In part one, data was collected on the hypotonic, hypertonic, and isotonic concentrations of sucrose, and its effects on the mass of the five shell-less eggs. It was found by calculating the change in mass (see equation 1) during the ten minute intervals, and the percent change of mass (see equation 2), that the forty percent hypertonic sucrose caused the most and quickest change in mass (Table 1). Therefore, as seen in graph 1, it created the fastest osmosis rate compared to the other solutions. In part two, the forty percent sucrose concentration was used to record the data of the three different temperatures, and the shell-less eggs masses. After the data was recorded, that mass change (see equation 1), and percent mass change (see equation 2) was calculated. The second data table showed the decreasing masses and the percent change in mass. Then graph two showed the decreasing percent change in mass in the hot, room temperature and cold solutions.

Worksheet to investigate the influence of organismal size and shape on the ratio of surface area to volume.

Research Question: How does the size of the cell affect its efficiency in exchanging substances through several ways, like diffusion?

Our hypothesis was correct because we proved that the gummy bears would expand more in plain water rather than the other liquids. Our gummy bears that we place in the water grew so much that it became distorted when lifted out of water. The mass of the gummy bear was so heavy that it broke the mold of the gummy bear. The sugar water gummy bear also grew a substantial amount that the mold was broken. Although both gummy bears were broken apart the plain water gummy bear absorbed the most, from our observations. The sugar water gummy bear was the 2 largest, the juice gummy bear was 3 largest, and the salt water gummy bear was the smallest according to the

The results of this lab shows how osmosis, diffusion, hypertonic, and hypotonic solutions. One way the gummy bear shows osmosis in gummy bears is how the gummy bear in the water solution grew the most. This gummy bear grew the most because the solution had a higher concentration, this in turn caused the solution to begin equalizing the concentration on each side

Most cells are small because diffusion can take place at a quicker rate. The convolutions allow for more space to be able to be used in order to get molecules across the membrane. These small cells allow for materials to quickly be able to reach the cell membrane and get in or out of the cell, without having to make a long journey from an inside part of the cell.

Due to the miniature size of a Daphnia, biologists have had unique troubles with analysing the way the systems of the Daphnia function. Biologists have argued, that the circulatory system of a Daphnia relies on diffusion or convection. However, it has been decided that depending on the oxygen levels in the environment will affect the way that the circulatory system of the Daphnia functions. The levels of haemoglobin will also affect the functioning of the circulatory system in the water flea. Haemoglobin is a red blood cell, assisting the

Starfish and crayfish body plans differ greatly. A crayfish has bilateral symmetry where the starfish has radial symmetry. The type of symmetry an organism has is suited to its lifestyle. Since the starfish has radial symmetry, it is not well equipped to move around, but it is equipped to interact with all sides of its environment.. Animals with radial symmetry are usually sedentary or move around slowly by floating. “In contrast to radial symmetry, which is best suited for stationary or limited-motion lifestyles, bilateral symmetry allows for streamlined and directional motion” (Animal Characterization). The crayfish has more specialized body parts than the starfish because it is equipped to move around and hunt down prey unlike the starfish. From the dissection, It can be concluded that the crayfish is more advanced because of its body systems and its ability to move around its environment more effectively.

Daphnia are freshwater crustaceans which live in lakes, ponds, and slow-moving streams. To swim, the Daphnia uses its antennae by thrusting it downward and pushing itself towards the surface of the water. After each push it pauses and floats downward while breathing and collecting food with its ten legs. These creatures are filter feeders and survive in culture by eating algae and protozoans. Even though Daphnia have a hard outer shell for protection, they are vulnerable to many prey, including newts, salamanders, tadpoles, and small fish. The nutrients Daphnia intake by eating algae is passed on to their predators. This is important in the food chain even to those who don’t eat the Daphnia

had absorbed so much water it was over twice the size. It was so much bigger because the gummy bear has a semi-permeable membrane so osmosis was able to occur. Osmosis is the movement of molecules from high to low areas of concentration

In this experiment, our objectives were to observe and analyze the metabolic rate of Orconectes rusticus crayfish by measuring the rate at which dissolved oxygen in the water was consumed. Furthermore, we looked to explore the relationship that body size had on the metabolic rate of the organism. We hypothesized that the metabolism of the crayfish would increase as the body length of the organism increased.

In the modern world, the media plays a massive role in an individual’s life. Whether it be watching the news to gain knowledge about their surroundings or just watching daytime television for amusement, it is no question that watching television is one of the most popular pastimes. With a simple click of the remote, a million shows are available for the viewer to watch. Even though it is convenient, it contributes to a developing problem that only modern humans have come to face: the increasing number of aggressive attitudes and behavior found in children.

“I'm ready! I'm ready! I'm ready! I'm ready!” These are one of the most popular words of the beloved “absorbent and yellow and porous” sea creature, SpongeBob Squarepants.

Looks: Looks like a normal half of a porous sponge but when it becomes more translucent

Cnidarians (or coelenterates), including sea anemones, jellyfish, and corals, are built mostly of sheets of cells, and they exploit the large surface area of the