Specialised exchange surfaces: / The organism also maintains a steep concentration gradient of gasses across Explain in terms of surface-area-to-volume ratio, why multicellular organisms need specialised or lungs, as they are more commonly known as. ^_^ Carbon dioxide - in animals and...All animals, whether large or small, have _____. most of their cells in contact with an aqueous medium. Most of the exchange surfaces of multicellular animals are lined with _____.GAS EXCHANGE SURFACES To maximise diffusion, an efficient gas exchange surface will… • have a large surface area multicellular animals need a gas exchange system • An exception: • Many multicellular animals are Gill arches lined with hundreds of gill filaments that are very thin and flat.Most animals and plants consist of different types of cells organised as tissues, organs and systems. The human respiratory system is a body system Larger multicellular organisms have smaller surface area to volume ratios. So, they have evolved exchange surfaces to exchange molecules...30) Most types of communication between cells utilize C) the release of chemical signals by the cell sending the message.
Best Ch. 40 Flashcards | Quizlet
… some crops to feed their animals and use animal manure to increase. the … of these crops. 5. Farmers try to raise such varieties of crops which are the most suitable for the climate of the region. 6. For centuries both meat and milk have been the main source of protein for people.This article is concerned with the problem of the relation between the genetic information contained in the DNA and the emergence of visible structure in multicellular animals. The answer is sought in a reappraisal of the data of experimental embryology, considering molecular, cellular and organismal...In multicellular organisms like humans the body design is very complex and the oxygen demand is quite high. To overcome this, multicellular organisms have specialized cells and tissues for performing various necessary functions of the body such as intake of oxygen and food.Most land-dwelling invertebrates and all of the amphibians A) are ectothermic organisms with variable body temperatures.
Biology 2.6: Describe diversity in the structure and function of animals
TI1e simples! multicellular animals are hy dras, sponges, and jellyfish, which have (A)One (B) One hundred (C) Many (D)An unknown number. 26. In line 6, the word "loosely" is closest in meaning 10. 28. The author of the passage implies that large animals and plants have. (A) larger cell sizes than...Most meteors burn up in the Earth's atmosphere before they can strike the surface. The planet's active geological processes have left no evidence of the ancient pelting it almost certainly received soon after it was Humans have built over most of the craters. Most meteors fell into the ocean and not on land.Sponges are primitive multicellular aggregates that are sessile in the adult state and illustrate radial symmetry or asymmetry. 1 and 2). At the margin of the osculum is a collar formed by the close apposition of many calcareous spicules (Sp in Figs.And many exchanges were heated because, despite 150 years of research on the biology of The core problem in the study of the development of multicellular organisms is: Why do cells that start out In some organisms, the assignment of a cell to the germ line is caused by an inheritance-based...The exchange surfaces of the organisms are the site for an exchange of substances or gases. These surfaces mostly lie within the body and protect the The exchange surfaces are finely branched or folded to have a very large area. The digestive, respiratory, and excretory systems all have such...
Most of the exchange surfaces of multicellular animals are lined with
A) connective tissue.B) smooth muscle cells.C) neural tissue.D) epithelial tissue.E) adipose tissue.
Answer: D
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