Biology, 07.10.2019 23:10 hjeffrey168
Healthy individuals of paramecium bursaria contain photosynthetic algal endosymbionts of the genus chlorella. when within their hosts, the algae are referred to as zoochlorellae. in aquaria with light coming from only one side, p. bursaria gather at the well-lit side, whereas other species of paramecium gather at the opposite side. the zoochlorellae provide their hosts with glucose and oxygen, and p. bursaria provides its zoochlorellae with protection and motility. p. bursaria can lose its zoochlorellae in two ways: (1) if kept in darkness, the algae will die; and (2) if prey items (mostly bacteria) are absent from its habitat, p. bursaria will digest its zoochlorellae.
Answers: 2
Biology, 21.06.2019 20:30
Dr. kaylan is an ecologist who studies bird behavior. she sets up an experiment to test which type of food crows are most likely to eat when given a choice between walnuts, corn, and sunflower seeds. to perform her experiment, dr. kaylan places three food bins in an area frequented by cows. each bin contains one of the three food types. then, she measures how much of each food type is eaten every day for a month and summarizes the results of her experiment in the pie chart below. based on her results, dr. kaylan concludes that crows choose to eat corn more frequently than other food sources because it has a higher nutritional value. what is a reasonable alternate conclusion that can be drawn from dr. kaylan's data
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Biology, 21.06.2019 21:20
Indicate whether the following statements about the biases in the fossil record are true or false. a) inland species are more likely to be preserved than marine species b) organisms with hard body parts are more likely to be preserved than are those composed soft tissues. c) species that existed over a larger area are more likely to be preserved than species existing over a smaller area. d) organisms that lived very long ago are more likely to be found as fossils than organisms that lived relatively recently e) the fossils of larger organisms are more likely to be found than the fossils of smaller organisms
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Biology, 22.06.2019 00:30
Which type of scientific statement is defined as a hypothesis or group of hypotheses that can be accepted as true based on the repeated experimentation with similar results
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Biology, 22.06.2019 02:30
{answer found. it's (3 ) }which statement describes the cell cycle? (1)the cell cycle is a process in which one cell divides into four genetically different cells. (2)the cell cycle is a process in which one cell divides into two genetically different cells. (3)the cell cycle is a process in which one cell divides into two genetically identical cells. (4)the cell cycle is a process in which one cell divides into four genetically identical cells.
Answers: 1
Healthy individuals of paramecium bursaria contain photosynthetic algal endosymbionts of the genus c...
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