1. the evolution of the eukaryotic cell, these cells have key changes that include which of the following: a) These cells reproduce by copying their DNA perfectly each generation. b) They have their DNA in the nucleoid area. c) have adapted the mesosome membrane system of the prokaryote to form a nucleus and an endoplasmic reticulum. d) each new type on new eukaryote cell has its own mesosomes e) none of these are true.
Structure and Composition of Cell Membrane
Despite differences in structure and function, all living cells in multicellular organisms are surrounded by a cell membrane. Just like the outer layer of the skin separates the body from its environment similarly, the cell membrane, also known as 'plasma membrane,' separates the inner content from its exterior environment.
Cell Membrane
The cell membrane is known by different names like plasma membrane or cytoplasmic membrane, or biological membrane. The term "cell membrane" was first introduced by C. Nageli and C. Cramer in the year 1855. Later on, in 1931, the term "plasmalemma" for cell membrane was given by J. Plowe. The cell membrane separates the cell's internal environment from the extracellular space. This separation allows the protection of cells from their environment.
Prokaryotes vs Eukaryotes
The cell is defined as the basic structural and functional unit of life. The cell membrane bounds it. It is capable of independent existence.
Please someone help me with all of these questions(maybe a short explation of why it is the answer)
1. the evolution of the eukaryotic cell, these cells have key changes that include which of the following: a) These cells reproduce by copying their DNA perfectly each generation. b) They have their DNA in the nucleoid area. c) have adapted the mesosome membrane system of the prokaryote to form a nucleus and an endoplasmic reticulum. d) each new type on new eukaryote cell has its own mesosomes e) none of these are true.
2. The evolution/development of the skeletal system found in the Deuterostomes, is made up of two molecules, Ca+2PO4-2 and collagen These molecules are produced released from by a specialized type of stem cell. Therefore, one would expect that these stem cells perform which of the following a) the storage and the release of Ca+2PO4-2 and collagen from vesicles from the Golgi apparatus, b) high levels of protein synthesis c) active transport of amino acids and ions into the stem cells through active transport, d) oxidation of pyruvate by the mitochondria, e) all are correct.
3. A multicellular eukaryote cell typically has enough available ATP to meet its needs for about 90 seconds. What would cause an active cell to exhaust its ATP supply so quickly? A) regular rest is a cellular requirement. B) Photosynthesis used up all ATP. C) ATP is transported into other cells. D) Too much glucose takes over the cell, E) the cell runs out of or uses up the available O2
4.The evolution of the three germ layers (ectoderm, mesoderm, and endoderm) in the evolution of complex animals is associated with the Annelids (earthworm) and the Mollusk (Clam), which are examples of: a) Protostomes and Deuterostomes. b) Just the Protostomes. c) Only the Deuterostomes, d) Cnideria, e) Porifera.
5. In the Cnidaria the ectoderm cells are important because they a) are the first specialized digestive cells. b) can react to a stimulus from the environment and cause the response of the cell into a directed movement. c) are needed for reproduction. d) form the first digestive organ. e) form the first real organ
6. As a unicellular eukaryote, the Amoeba is an important example of which of the following? a) It reacts to a stimulus. b) when it reacts , the stimulus produces an electrical impulse that causes a change in other proteins. c) It generates motor output (movement). d) It uses specific membrane embedded proteins as stimulus receptors. e) All of these are characteristics of the Amoeba and its behavior's.
7. The O2 to be utilized by the mitochondria of all eukaryote cells is produced by a) oxidative bacteria, b) the Calvin Cycle of the Cyanobacteria, c) Photosynthesis, dark phase, d) photosynthesis, light phase, e) all of these are correct.
8. In Deuterostomes, nutrient molecules (monomers) are taken into the space between the endoderm and the ectoderm because a) the ectoderm makes protein for movement, b) the endoderm cells release hydrolytic enzymes that act on
9. The Amoeba cell exhibits specialized abilities that enable it to react to a stimulus by producing a response or a behavior. It can do this because it has adapted properties exhibited by simpler more primitive cells. These cellular properties include a) Separation of the fluid environments inside and outside the cell. b) Active transport of Na+ out of and K+ into the cell, c) diffusion of Na+ in to and K+ out of a cell in reaction to a stimulus, d) the stimulus interacting with a receptor site in a membrane embedded protein, e) All of these are true.
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