Homework Answers
4) A water sample from a hot thermal vent contained a single-celled organism that had a cell wall but lacked a nucleus. what is its most likely classification?
Answer: Archaea.
Archaea are the single-celled prokaryotic organisms which are found in extreme conditions like a hot thermal vent. Like bacteria, they lack a true nucleus and but unlike bacteria have a cell wall and different mechanism to survive under extreme conditions.
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4) A water sample from a hot thermal vent contained a single-celled organism that had a...
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??? DeepSea Explorer brings some sample near a hydrothermal vent on the seabed some 1000-meter deep....
???
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#51,53,54
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reviously unknown single-celled organism that lacks a nuclear envelope and cochondria has just been discovered. Which of the following cell components would this organism most likely possess? a) lysosomes b) actin filaments c) ribosomes d) endoplasmic reticulum e) all of these components are equally possible 6) Autophagy is a process by which: a) Human macrophages find and consume foreign invaders such as infecting bacteria in the human body b) Peroxisomes break down long chain fatty acids into shorter lengths that...
37. In the lab cellular processes the dialysis tubing represented what? A. Cell wall B. Capsule C. Nucleus D. Plasma membrane E. Ribosome 38. A scientist is studying an unknown cell under the microscope. She observes that the cell has a nucleus, a cell wall, and a large central vacuole. Based on these observations she can conclude that the cell is most likely A. An archaea B. A bacteria cell C. An animal cell D. A plant cell E. A...
???
DeepSea Explorer brings some sample near a hydrothermal vent on the seabed some 1000-meter deep. Upon examination with a light microscope, a unicellular star-shaped microorganism was discovered in the sample and cells were collected and their chemical compositions were analyzed. a) After analysis, scientists discover that these cells contain DNA, RNA, proteins and phospholipids Based on these results, you can conclude the organism is made of cells of Prokaryotic 1) Eukaryotic i) Cannot be determined b) Explain your reasoning...
#51,53,54
C. Hook, filament, basal body d. Basal body, filament, hook FO. From the list below choose the cell surface structure(s) that allow bacteria to adhere to surface a. Cilia b. Fimbriae C. Flagella d. Polysaccharides e. Capsule 51. A microbe has been found in the boiling hot waters of a deep ocean hydrothermal vent. It cannot be readily stained or cultured in the laboratory before its rRNA can be sequenced. What hypothesis can you offer regarding its identity? a....
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Please do the 50 multiple choices questions.
NAME CHOICE from 4 c to zero? MULTIPLE water as it is cooled 1. What happens to a given mass of a. expands b, contracts c. vaporizes contracts, nor vaporizes. d. Neither expands, 2. A plate has a hole drilled through it. The plate is put into a furnace and heated. What steel the size of the inside diameter of a hole as its temperature increases? happens to a. increases b. decreases C,...
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42. Which statement is NOT true about DNA? a) DNA acts like an enzyme by binding amino acids together using dehydration synthesis. b) Before cells divide both strands must be copied and one is provided for each new cell cm RNA is copied from a piece of DNA termed a gene. d) DNA is not always copied perfectly. Mistakes, mutations, occur and result in changed proteins, e) DNA functions as code for the synthesis of proteins. 43. A section of...
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