Imagine you are the chief biologist at NASA when Perseverance Ill returns from its mission to Earth-like exoplanet Proxima Centauri b with actual living cells. You examine the cells in a variety of ways and find that they have what look like organelles, but very different from those in Earth species. Based on their appearance, you have named them cheese hats, kidney beans, and Drake. The cells secrete a gelatinous substance that you name "PC goo" and determine that it is comprised of polysaccharides containing the monosaccharides L-xylose and L-arabinose. Curious about how these alien cells synthesize PC goo prior to secretion, you perform a Pulse-Chase experiment using radioactively-labeled L-xylose. The resulting data are plotted in the graph below. 100 cheese hats kidney beans ...... Drake medium (extracellular) 20 40 60 Time after chase (min.) A conclusion that may reasonably be drawn from this data is that: O PC goo is synthesized in Drake. O Cheese hats are the 2nd organelle that PC goo is transported to after it is synthesized. O Kidney beans are the 3rd organelle that PC goo is transported to after it is synthesized. O PC goo is secreted into the medium constitutively. % of silver grains

Imagine you are the chief biologist at NASA when Perseverance Ill returns from its mission to Earth-like exoplanet Proxima Centauri b with actual living cells. You examine the cells in a variety of ways and find that they have what look like organelles, but very different from those in Earth species. Based on their appearance, you have named them cheese hats, kidney beans, and Drake. The cells secrete a gelatinous substance that you name "PC goo" and determine that it is comprised of polysaccharides containing the monosaccharides L-xylose and L-arabinose. Curious about how these alien cells synthesize PC goo prior to secretion, you perform a Pulse-Chase experiment using radioactively-labeled L-xylose. The resulting data are plotted in the graph below. 100 cheese hats kidney beans ...... Drake medium (extracellular) 20 40 60 Time after chase (min.) A conclusion that may reasonably be drawn from this data is that: O PC goo is synthesized in Drake. O Cheese hats are the 2nd organelle that PC goo is transported to after it is synthesized. O Kidney beans are the 3rd organelle that PC goo is transported to after it is synthesized. O PC goo is secreted into the medium constitutively. % of silver grains

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter10: Cell Division And Mitosis

Section: Chapter Questions

Problem 2ITD

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Virtually every multicellular organism, including you, goes from a single-celled fertilized egg to a large, multicellular organism. In this post you will demonstrate an understanding of how the process of mitosis leads to the growth of an organism and how cell differentiation results in the wide variety of specialized cells found in a multicellular organism. How does mitosis explain the process of growth? Can growth occur only through mitosis? If every cell in your body is a copy of that original fertilized egg, how is it that some cells are so different than other cells? How does differentiation help explain these different cell types? Cite some specific examples of differentiated (specialized) cells. Please remember to add a question to engage your classmates in the discussion.
One difference between eukaryotic and prokaryotic cells is that eukaryotic cells ______ prokaryotic cells. have a plasma membrane, which is lacking in have membrane-enclosed structures called organelles, which are lacking in have a nucleoid region, which is lacking in have DNA, which is lacking in
You observe a cell that is undergoing mitosis. You see double-stranded chromosomes and a partial nuclear membrane. What phase is this cell in?
Michael was born with Tay-Sachs disease. Which of the following organelles in Michael’s cells lacks a specific enzyme that digests organic molecules? a. mitochondria b. lysosomes c. Golgi apparatus d. centrioles
Which of the following consist of protoplasm?A. Nucleus + cytoplasm B. Liquid substance present in the nucleus - nucleoplasmC. Ribosomes+ nucleusD. Mitochondria+ nucleus
concerning the nucleus of human cells, which of the following is true? a.all human cell have nuclei b.all nuclei have a double nuclear membrane c.the chromosomes in nuclei are composed of dna and rna d.the nucleus controls most cellular activities e.chromosomes direct structural protein construction inside the nucleus
The cells labeled A came from a human cheek. The cells labeled B came from an aquatic plant called Elodea. Which is true, and how can you tell from the images? A. Both cells are prokaryotic. You can't see any membrane-bound organelles in these cells. B. Both cells are eukaryotic. You can see the nucleus in the cheek cells, and chloroplasts in the Elodea cells. C. Both cells are eukaryotic. You can see the nucleus in the cheek cells, and many nuclei in the Elodea cells. D. The cheek cell is eukaryotic because you can see the nucleus. The Elodea cells are prokaryotic because you can see the chloroplasts.
Do animal and plant cells have all of the same organelles? Explain. Why would your heart cells have more mitochondria than your eye cells?
While studying a human cell under a microscope, you spot a small, round organelle that seems to have a single membrane. Is it more likely to be a nucleus, ribosome, vesicle, or mitochondrion? What might it contain?
In the context of cell biology, what do we mean by form follows function? What are a least two examples of this concept?
Mitosis occurs daily in a human being. What type of cells do humans need to produce in large quantities on a daily basis?
Which of the following is found both in eukaryotic and prokaryotic cells? a. nucleus b. mitochondrion c. vacuole d. ribosome