For items 6-15 choose the letter of the best answer. No need to write the explanations. 6. How does a cell wall functions as protection for the cell? A. It protects the cell from insects. B. It controls passage of substances C. It maintains cell shape during excess water in cells D. It contains genetic material 7. It is an organelle for assembling ribosomes with genes for rRNA synthesis. A. Chromosomes B. Mitochondria C. Nucleolus D. Ribosomes 8. Why do phospholipids tend to organize into a bilayer in an aqueous solution? A. it hides its tail from water B. It hides its tail like a dog C. It arranges itself like a comb D. Its saturated fatty acids are straight 9. Which of the following matches with a microtubule's function? A. Cellular respiration B. Digestion C. Movement D. Photosynthesis 10. Which structure clearly distinguishes a eukaryote from a prokaryote? A. Chloroplast B. Flagella C. Nucleolus D. Vacuole 11. Which organisms have the smallest size of cells? A. Animals B. Humans C. Plants D. Viruses 12. Which specialized cells are responsible for the hereditary of traits? A. Bone cells B. Hland cells C. Muscle cells D. Reproductive cells 13. Which is the MOST unethical use of stem cells? A. Cosmetics B. Tissue replacement C. Organ replacement D. Medication 14. Which structure of the chromosome are mitotic spindle fibers attracted to during cell division? A. Centromere B. Kinetochore C. Microtubule D. Telomere 15. Interphase takes too long to finish. Why is that so? A. Double checking of errors needs to be thorough. B. Organelles duplicated should be completed first C. DNA duplication needs to be perfect D. All the preceding choices are correct.
For items 6-15 choose the letter of the best answer. No need to write the explanations. 6. How does a cell wall functions as protection for the cell? A. It protects the cell from insects. B. It controls passage of substances C. It maintains cell shape during excess water in cells D. It contains genetic material 7. It is an organelle for assembling ribosomes with genes for rRNA synthesis. A. Chromosomes B. Mitochondria C. Nucleolus D. Ribosomes 8. Why do phospholipids tend to organize into a bilayer in an aqueous solution? A. it hides its tail from water B. It hides its tail like a dog C. It arranges itself like a comb D. Its saturated fatty acids are straight 9. Which of the following matches with a microtubule's function? A. Cellular respiration B. Digestion C. Movement D. Photosynthesis 10. Which structure clearly distinguishes a eukaryote from a prokaryote? A. Chloroplast B. Flagella C. Nucleolus D. Vacuole 11. Which organisms have the smallest size of cells? A. Animals B. Humans C. Plants D. Viruses 12. Which specialized cells are responsible for the hereditary of traits? A. Bone cells B. Hland cells C. Muscle cells D. Reproductive cells 13. Which is the MOST unethical use of stem cells? A. Cosmetics B. Tissue replacement C. Organ replacement D. Medication 14. Which structure of the chromosome are mitotic spindle fibers attracted to during cell division? A. Centromere B. Kinetochore C. Microtubule D. Telomere 15. Interphase takes too long to finish. Why is that so? A. Double checking of errors needs to be thorough. B. Organelles duplicated should be completed first C. DNA duplication needs to be perfect D. All the preceding choices are correct.
Chapter3: Basic Human Anatomy And Physiology
Section: Chapter Questions
Problem 10RQ
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Concept explainers
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.
Question
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For items 6-15 choose the letter of the best answer. No need to write the explanations.
6. How does a cell wall functions as protection for the cell?
A. It protects the cell from insects.
B. It controls passage of substances
C. It maintains cell shape during excess water in cells
D. It contains genetic material
7. It is an organelle for assembling ribosomes with genes for rRNA synthesis.
A. Chromosomes
B. Mitochondria
C. Nucleolus
D. Ribosomes
8. Why do phospholipids tend to organize into a bilayer in an aqueous solution?
A. it hides its tail from water
B. It hides its tail like a dog
C. It arranges itself like a comb
D. Its saturated fatty acids are straight
9. Which of the following matches with a microtubule's function?
A. Cellular respiration
B. Digestion
C. Movement
D. Photosynthesis
10. Which structure clearly distinguishes a eukaryote from a prokaryote?
A. Chloroplast
B. Flagella
C. Nucleolus
D. Vacuole
11. Which organisms have the smallest size of cells?
A. Animals
B. Humans
C. Plants
D. Viruses
12. Which specialized cells are responsible for the hereditary of traits?
A. Bone cells
B. Hland cells
C. Muscle cells
D. Reproductive cells
13. Which is the MOST unethical use of stem cells?
A. Cosmetics
B. Tissue replacement
C. Organ replacement
D. Medication
14. Which structure of the chromosome are mitotic spindle fibers attracted to during cell division?
A. Centromere
B. Kinetochore
C. Microtubule
D. Telomere
15. Interphase takes too long to finish. Why is that so?
A. Double checking of errors needs to be thorough.
B. Organelles duplicated should be completed first
C. DNA duplication needs to be perfect
D. All the preceding choices are correct.
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