Questions and answers by

Gbebe

Questions (18)

In order to come to the conclusion that their hypothesis is supported, what crucial step must a scientist perform?A. Gather
1. 2 answers
2. 762 views
Which is an example of a scientific theory?A. If a person takes at least one vitamin per day, then it will reduce a person’s
1. 1 answer
2. 708 views
In a phylogenetic tree, what does the distance between branches represent?A. a shared common ancestor B. similarities in
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2. 1,028 views
Which of the following can scientists learn about from studying fossils?
1. 2 answers
2. 1,548 views
Q: What are examples of active transport proteins?A: A carrier protein that uses ATP or K+ + NA+ pump.
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2. 222 views
Q: Which correctly describes how the sodium-potassium pump works?A: ATP provides energy, pump transports the two types of ions.
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2. 358 views
Q: Which are examples of active transport?A: Exocytosis, pinocytosis, and phagocytosis.
1. 1 answer
2. 406 views
Q: What is endocytosis?A: The energy-using process in which macromolecules are taken into the cell.
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2. 239 views
Q: What organelles have arisen through endosymbiosis?A: Chloroplasts and mitochondria.
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2. 289 views
Q: What supports the theory of endosymbiosis for mitochondria?A: Circular DNA found in prokaryotes divide by binary fission.
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2. 245 views
Q: Describe how chloroplasts provide energy for plant cells?A: Chloroplasts use light energy to make sugar from carbon dioxide
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2. 425 views
Q: What is a specialized internal cellular structure bound by one or more membranes?A: Organelle
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2. 400 views
Read the following description.Clusters of cells located near the carotid artery in the neck sense the amount of oxygen in the
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2. 485 views
What is an example of positive feedback?Correct answer: herd of buffalo running away after one of them spots a lion.
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2. 364 views
What is feedback?Correct answer: A way in which part of a system’s output enters back into the system as input
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2. 310 views
Which of the following is a correct statement about insulin and glucose?Correct answer: Through negative feedback, insulin
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2. 745 views
In a negative feedback loop, how are the response and the original stimulus related?Correct answer: The response counteracts the
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2. 470 views
Examine the scenario below.A lizard’s body temperature begins to drop, so it moves out of the shade onto a rock in the sun
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2. 1,191 views