Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 25, Problem 8TYK
Summary Introduction
Introduction:
Living organisms usually have an internal
When protocells first developed, they had a membrane that permitted only some substances to pass through. They can pass on genetic information that they store in the form of plasmids and have a large amount of an aqueous solution called cytoplasm.
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What structure cannot be found in ALL cells? Explain why
A. Mitochondria
B. DNA
C. Cell membrane
D. Cytoplasm
F. Ribosomes
While how the first cells formed is still unknown, scientists suspect that the first active biological macromolecule wasa. protein.b. DNA.c. RNA.d. carbohydrates.
The earliest cellular life forms appear to have been_____.
A. Bacteria
B. One-celled plants
C. On-celled animals
D. Viruses
E. Mammals
Chapter 25 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 25.1 - Why is the reducing nature of early Earths...Ch. 25.1 - Prob. 2SBCh. 25.2 - Prob. 1SBCh. 25.2 - Prob. 2SBCh. 25.2 - Prob. 3SBCh. 25.3 - Prob. 1SBCh. 25 - Prob. 1TYKCh. 25 - Which of the following is not a characteristic of...Ch. 25 - Prob. 3TYKCh. 25 - According to the OparinHaldane hypothesis, the...
Ch. 25 - Prob. 5TYKCh. 25 - Prob. 6TYKCh. 25 - In a population of self-replicating RNA molecules,...Ch. 25 - Prob. 8TYKCh. 25 - Prob. 9TYKCh. 25 - Prob. 10TYKCh. 25 - Prob. 11TYKCh. 25 - Prob. 12TYKCh. 25 - Prob. 13TYKCh. 25 - Prob. 14TYKCh. 25 - Prob. 15TYKCh. 25 - Prob. 16TYKCh. 25 - Prob. 1ITDCh. 25 - Prob. 2ITDCh. 25 - Prob. 3ITD
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- Which of the following would have been found in an early prokaryotic cell? a membrane-bound organelles b nucleus c chloroplasts d DNAarrow_forwardWhich of the following statements supports the concept of the endosymbiotic theory? A. Proteins may be trafficked within the endomembrane system. B. Ribosomes are present in the cytoplasm of prokaryotic cells and eukaryotic cells. C. Chloroplasts have many features in common with bacteria. D. Mitochondria can fuse together to form larger organelles within eukaryotic cells.arrow_forwardSuggest how the Golgi apparatus could have evolved. Sketch a simple diagram to illustrate your ideas. For the Golgi apparatus to be functional, what else would be needed?arrow_forward
- Which letter is the answerarrow_forwardGive an example of structural change that has occurred inchromosomes during evolutionarrow_forwardconcerning 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 nucleusarrow_forward
- Cells in a multicellular organism have specialized to such an extent that they have little in common with single-celled organisms. (True orfalse?)arrow_forwardA human nerve cell that has an abnormal shape most likely has adefective a. cell wall.b. cytoskeleton.c. nucleus.d. ribosome.arrow_forwardFor 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.…arrow_forward
- What controls the passage of molecules into and out ofthe nucleus?a. endoplasmic reticulum, an extension of the nucleusb. nuclear pores, which consist of membrane proteinsc. nucleoli, in which ribosome subunits are maded. dynamically assembled microtubulese. tight junctionsarrow_forwardWhat types of similarities in cell structure and function tell biologists about the common origin of organisms? Explainarrow_forwardDirect evidence of life on early Earth comes from fossils of microorganisms that lived 3.5 billion years ago. But how did the first living cells appear?arrow_forward
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