Biology, 10.03.2020 03:01 needhelpwithHW10
The lion’s mane jellyfish can be up to 8 feet wide. In spite of its large size, it has no structures for bulk flow to deliver oxygen to its cells. How can it be so large, and lack a mechanism for bulk flow? A. The jellyfish is surrounded by water, so the concentration gradient between the water and the jellyfish is steep, making the rate of diffusion across tissues very high. B. The jellyfish is filled with tissue made of structural cells that are not metabolically active. Therefore a mechanism to transport oxygen to its interior is not necessary. C. The jellyfish body is actually a series of intricate folds, so the ratio of surface area to volume is maximized and diffusion occurs as it would across a tissue one or two cells thick. D. The jellyfish does not have receptors for sensing the environment, so does not need a mechanism for transmitting signal molecules throughout the body.
Answers: 2
Biology, 22.06.2019 01:20
And give a detailed description! scientist observes the boundary between two tectonic plates for a decade and finds that no new volcanoes have formed over the course of her investigation. does this result support the theory of plate tectonics? why or why not?
Answers: 3
Biology, 22.06.2019 03:00
Which of the following is the best definition for the process of photosynthesis? a.) plants digest sugars to make energy. b.) plants use oxygen and glucose to make carbon dioxide. c.) plants use sunlight and carbon dioxide to make sugars. d.) plants use sunlight to make chlorophyll and chloroplasts.
Answers: 2
Biology, 22.06.2019 03:00
When mendel crossed a true-breeding short plant with a true-breeding tall plant all the offspring were tall. which term describes the gene for tallnes?
Answers: 1
The lion’s mane jellyfish can be up to 8 feet wide. In spite of its large size, it has no structures...
History, 21.09.2019 15:00
Mathematics, 21.09.2019 15:00
Mathematics, 21.09.2019 15:00
Mathematics, 21.09.2019 15:00
Mathematics, 21.09.2019 15:00
English, 21.09.2019 15:00
Computers and Technology, 21.09.2019 15:00
Mathematics, 21.09.2019 15:00
World Languages, 21.09.2019 15:00
Mathematics, 21.09.2019 15:00
Mathematics, 21.09.2019 15:00