Arthropods Lab Report

The purpose of this experiment was to measure the metabolic rate of pill bugs and crickets. I indirectly measured the metabolic rate of each organism by calculating their respiration rates. In crickets, gas exchange is accomplished via a tracheal system [Contreras, Bradley, 2010]. Pill bugs have pleopods, gill-like respiratory organs [Gibbs, Smigel, 2008]. My hypothesis was that the crickets will have a faster respiration rate than the pill bugs. I used a respirometer to measure the oxygen consumption of pill bugs and crickets. After plotting the data, I used the slope to obtain the respiration rate. The respiration rate per gram of organism for the pill bugs was 0.0025 mL/min./g. The respiration rate per gram of organism

1. a. Soil is one abiotic variable that would explain why the millipedes are found more frequently under logs. The soil could contain essential nutrients to the millipedes. Another abiotic factor could be the darkness provided under the logs. Millipedes can take shelter under the logs and avoid light. Predation is a biotic factor that also explains why millipedes are plentiful under logs. The logs millipedes hide under provide a place for millipedes to take cover from possible predators.

The results of this experiment support the idea that termites are drawn to follow the pheromones released from the ink in ballpoint pens rather than paths drawn with other writing utensils. The data collected shows that the majority of the termites spent a majority of the timed sixty seconds tracing the outline of the pen as opposed to the outline of the Sharpie marker. The ink

The mole is a convenient unit for analyzing chemical reactions. Avogadro’s number is equal to the mole. The mass of a mole of any compound or element is the mass in grams that corresponds to the molecular formula, also known as the atomic mass. In this experiment, you will observe the reaction of iron nails with a solution of copper (II) chloride and determine the number of moles involved in the reaction. You will determine the number of moles of copper produced in the reaction of iron and copper (II) chloride, determine the number of moles of iron used up in the reaction of iron and copper (II) chloride, determine the ratio of moles of iron to moles of copper, and determine the number of atoms and formula units involved in

The purpose of this lab was to save a little gummy worm named Sam from drowning. In addition, one of the labs key terms was a hypothesis which is a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation. Furthermore, we also learned that an independent variable is a factor that is changed during the experiment. On the other hand, the dependent variable is the factor that is observed or measured during the experiment. To begin with, the experiment the hypothesis formulated was if we reshape the paperclips into hooks and pick up sam, and the lifesaver (without touching them), then the lifesaver would be stretched enough for Sam to go through it.

The isopods used for this experiment range in color from gray to brown and were about 8.5 to 18 mm in length. Each Isopod’s head had one pair of antennae and one pair of antennules, both used to detect sensory stimuli from the environment around the pillbug. Their bodies were made of a hard thorax with seven segments and an abdomen. Each pillbug had seven pairs of legs, one for each segment of its thorax. Pill bugs breathe through gill-like structures and must live in moist places.

An association between enzyme production, gene copy number, and gene evolution was explored by conducting analysis of the salivary amylase enzyme, AMY1A gene copy number, and the ancestral starch consumption in Homo Sapiens (Tracey 2017, p.22). It was hypothesized that the relative amount of starch consumption was very high for my personal ancestral diet, thus my AMY1 diploid gene copy number in my genome and salivary amylase concentration would be significantly higher than the population mean. With a population of 28 subjects (n=28), individual saliva samples were collected and compared to a calibration curve to determine the approximate amylase concentration by analyzing absorbance values. Individual samples of buccal cheek cells were

On April 13 at approximately 10:00pm Rupert and Rupina Clodhopper returned home to find their back patio door had been broken into. The police questioned them about the $10,000 in jewelry the kept in a wall safe. They said only six of their employees, Mike, Bob, Chris, Mary, Susan, and Jessica, knew about it. The police evidence technician team found broken glass and a glove with blood on it. The glass was from the glass window pane of the patio door. Each employee was then asked about their whereabouts during the time of the robbery and to give blood samples. The purpose of this lab is to find out who broke into the Clodhoppers home by testing the blood samples from the employees and the glove. Analysis:

Construction of each substrate: Rock Crevice: The rock crevice used four rocks to make a crevice shape Rock Structure: The rock structure was made of three rocks, two rocks on the bottom level and one resting on top of the others to make an overhang. Seaweed: Find a small bunch of Bladderwrack-Fucus seaweed and weigh it down with a small rock so it does not disturb the other substrates. Shells: Collect periwinkles (both smooth and common), dogwhelks, and a mussel or clam to make up the shell area.

Materials: Scale, potato slice, big tub, small cup, petri dish, big tub lid, mealworms, tape, BTB, and a pencil.

On this image, we see the external dorsal side of a preserved crayfish. As part of the largest animal phylum the Arthropoda, the body of the crayfish is segmented, with jointed appendages and exoskeleton. The paired antennae (1) are long appendages located the front of the mouth and modified for help the animal to sense touch and taste. The antennules (2) are shorter, also paired with the same function but they also help to maintain balance. The chelipeds (3) are located on the front of the thorax, and they are responsible for defence and grasping food. On the at ventral part of the thorax, we found four pairs of walking legs (4), with these legs the crayfish changes locations on the bottom of freshwater lakes, streams and also on land. They

The most prominent fossils in the Crato Formation are the insects that are preserved. One example of an insect that has been recently found is the Araripenymphes seldeni (as seen in figure 3), an extinct species of lacewing (Myskowiak et al., 2016). The taphonomic classification of A.seldini is: Nymphidae Family Neuroptera Order, and Insecta Class (Myskowiak et al., 2016). This particular species shows sexual dimorphism, a difference in characteristics beyond the sexual organs (Clarkson, 1998). In particular, differences in the wing colouration and wing lengths (Myskowiak et al.,

In conclusion, the data that was collected helped tell us that the solutions greatly affected the cell of the egg because it caused the egg’s mass to increase than decrease. Also saw how the solutions played a role in the phospholipid bilayer and saw how it altered the shape of the egg. However, it does not support my hypothesis on the affect the egg would undergo onced placed in sugar and water but sugar was not used in this experiment, but water was used and it didn’t affect the shape of the egg, all it did was cause the egg to be in a isotonic state. According to Khan Academy (2017), states that a cell is isotonic “When the extracellular fluid has the same osmolarity as the cell, there will be no net movement in or out of the cell”. Which

The purpose of this experiment is to test how location affects whether or not the clay caterpillar models will get pecked by birds. Twenty-one clay caterpillars were made and they were made to be 5 cm ± 0.01cm long and 1 cm ± 0.01cm in diameter. Seven caterpillar models were placed in each of the three locations. The three locations are my backyard, the park, and my community garden. As a control variable, all the caterpillars were placed 300 cm ± 50 cm above the ground. An equal amount of caterpillars were glued, to prevent them falling off, in similar areas such as trees, bushes, and fences. This experiment went on for three weeks. Each week is considered one trial. Each caterpillar that was pecked or not was recorded and the data was placed

Biodiversity presents occurrence of variety of species and their natural community in which they live. By the definition it is “The degree of variation of life forms within a given species, ecosystem, biome, or an entire planet. It is a measure of the health of ecosystems and is in part a function of climate.” (Rutherford) Ecosystem is on the other hand, “ community and its abiotic environment”( Rutherford). Biodiversity exists in every ecosystem, weather it is big one, or just ecosystem of one garden, it has the same importance because without it nature loses its ability to perform major functions needed for life on Earth, as it is oxygen production. Trough this investigation, two different ecosystems will be explored and