Answer:
He examined covered and uncovered meat to determine that maggots came from eggs.
Explanation:
Prior to Redi's experiment and other supporting experiments, it was formerly believed that life could emanate from non-living things, for example, the generation of maggots from rotting meat.
In 1668, a scientist called Francesco Redi disproved the idea of spontaneous generation. He did this when he experimented that the maggots from meats are only as a result of eggs laid by flies when they perched on the meat.
He placed the meat in two jars; an uncovered jar and another in a covered jar with a cloth, after several days, the uncovered jar had maggots on the meat, while the covered jar had no maggot on the meat, but on the cloth. With this experiment, he was able to demonstrate that the maggot arose from the eggs of the flies, not the meat itself which is nonliving and hence, disproved the idea of spontaneous generation.
Answer:
The correct answer is - 6.8950.61 gm per mole
Explanation:
Given:
One form of hemoglobin is 0.324% Fe by mass
1 hemoglobin = 4 Fe
Solution:
Molar Mass of iron = 55.85
mass of 4 iron atom = 55.85 * 4 = 223.4 gms
0.324 % correspond to 223.4 gms
100 % correspond to = 223.4 *100/0.324
= 68950.61 gm
MM of haemoglobin = 68950.61 gms = 6.8 E4 gms
The four major organic compunds are lipids, carbohydrates, proteins, and nucleic acids.
Lipids are used to store energy, insulate insulate, and they help build cell membranes. Examples of lipids are fats, oils, and waxes.
Carbohydrates are used to give us quick energy and they help build cell walls. Examples of carbohydrates include bread, pasta, cereal, and rice.
The role of proteins is to build our bodies, help our immune system, and help cells communicate. Such examples include meat, beans, eggs, fish, nuts, soy, and dairy.
Finally, Nucleic acids are used to store gentetic info. Anything plant or animal based is considered a nucleic acid.
Answer:
<em>The correct option is A. X, because organism X has the same role as the grasshopper</em>
Explanation:
In a food chain or a food web, a primary producer can be described as an organism which feeds on producers. The producers, in this case, are the corn stalks. Grasshoppers are primary consumers in this food web because they feed on the corn stalks. X is also a primary producer, just like grasshopper, because it feeds on the corn stalks which are the producers. Hence, option A is correct.
In cellular respiration, the cells take the carbohydrates in and through complex metabolic processes, they break them down and release the energy.
