Biology, 09.09.2020 22:01 tiannaetzel
Spontaneous generation is the hypothesis that nonliving material can spontaneously change into a living organism. Hundreds of years ago, many scientists accepted this hypothesis. The following is one experiment that was performed to test the hypothesis of spontaneous generation: Meat was placed in three identical glass jars. One jar was left open, one jar was tightly sealed, and one jar was covered with a fine mesh that allowed air into the jar but kept flies out. Maggots (fly larvae) only appeared in the open jar. Was the control used in this experiment adequate? A. No, this experiment included two variables instead of one. B. Yes, the open jar acted as a control. C. No, this experiment did not include a control group. D. Yes, both the sealed jar and the jar with mesh were controls for the open jar
Answers: 2
Biology, 21.06.2019 21:20
The endoplasmic reticulum (er) is an organelle in some cells. in these cells, it is continuous with the nuclear membrane and forms a large part of the cell\'s total membrane. sort the phrases below as describing rough er, smooth er, both, or neither. note: if you answer any part of this question incorrectly, a single red x will appear indicating that one or more of the phrases are sorted incorrectly.1) found in prokaryites and uekaryotys2) involved in protein synthesis3) involve in lipid synthesis4) contains molecular chaperones in lumen5) bound with ribosomes6) involved in toxin or drug metabolism7) large systemot internnected tubules,vesicles, and sacs8) "packages" enzymes in vesicles for secretion.
Answers: 2
Biology, 21.06.2019 23:00
Ricardo notices that when he plays soccer in the rain, his ball does not seem to go as far after a kick. what is the best scientific question that ricardo could ask about this observation? is soccer better played in the rain or sun? how does rain affect the distance a soccer ball can travel? how does rain affect the speed of a soccer ball? is soccer affected by the rain?
Answers: 1
Biology, 22.06.2019 11:00
1. which of the following transport mechanisms utilizes energy? a. osmosis b. diffusion c. facilitated diffusion d. endocytosis
Answers: 1
Biology, 22.06.2019 14:00
How far down have geologists drilled holes ? (science) a: 3.8 km b: 12 km c: 100 m d: 1200 km
Answers: 1
Spontaneous generation is the hypothesis that nonliving material can spontaneously change into a liv...
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