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la celula animal presenta, excepto
A)lisosomas
B)cloroplastos
C)mitocondrias
D)nucleo
E)ribosomas
Step by step
Solved in 2 steps
- In a bacterial cell, the DNA is in the _______. a) nucleoid b) cell envelope c) cell membrane d) nucleus e) ribosomesShort, hairlike structures covering the surface of the cell used only by eukaryotic cells for movement are called O 1) pseudopodia. O 2) fimbriae. O 3) cilia. O 4) pili. O 5) flagella.1.Which of the following is true with a eukaryote? A) It has DNA. B) It ha s cell m embrane C) Both of the above. 2.Which of the following part is absent in a human red bl ood cell? A) nucleus C) cell membrane B) cytoplasm 3.What makes the endoplasmic reticulum rough? B) ribos ome A) mitochondria C) vesicles 4.Which of the following cell part is absent in a human spermatozoon? B) cytoplasm C) cell m embrane A) nucleus 5.What chemical substance stores energy for cellular use? C) adenosine triphosphate B) NAD PH A) glucose B Ctrl)
- 43) The major setback for the use of Transmission Electron Microscope is that: a) You can’t stain the sample with colored dyes b) You can’t see internal structures of the cell c) You can’t focus on Organelles inside the cell d) you can’t focus on cell membranes44) The major advantage of using the Scanning Electron Microscope (SEM) over the Transmission Electron Microscope (TEM) is that: a) You can use live material in looking through the SEM and not the TEM b) You can look at internal structures with SEM & not TEM c) You can use higher magnifications with SEM d) You can look at solid objects with SEM45) The image that you are observing in the SEM comes from: a) Direct reflection/bouncing of electrons from the specimen you are looking at b) Backscattered electros from the secondary electrons from the specimen c) A contrast between the texture of the specimen you are looking at d) A contrast between the acidophilic and basophilic components of the specimen you are looking at46) A…Which statement about flagella is false? Question 9 options: a) Eukaryotic flagella are made of a protein called tubulin. b) Eukaryotic flagella move in a wavelike motion. c) Prokaryotic flagella rotate. d) Prokaryotic flagella are composed of a protein called flagellin. e) Prokaryotic flagella can transfer DNA between cells. f) None of the above statements is false.Which structure is “slimy” in texture and may protect a prokaryotic cell from destruction by our immune system? a)Pili. b)Flagella. c)Capsule. d)Nucleoid. e)Mark e if none are correct.
- Multiple fission within the parental bacterial cell leads to a formation called: a) Glial tissue b) Coenocytic tissue or Syncitium c) Baeocytes d) Multinucloid e) ProsthecaCellular DNA is uncondensed throughouta) Prophaseb) Interphasec) Telophased) AnaphaseWhy can bacterial ribosomes be targeted by antibiotics?a) Because they are different from eukaryotic ribosomesb) Because eukaryotes don't have ribosomesc) Because they are identical to eukaryotic ribosomes explain answer
- The endosymbiotic theory pertains to which organelle within eukaryotes because of the presence of 70S ribosomes, circular DNA, and the replication of this organelle independent from mitosis? O 1) nucleus O 2) lysosomes. O 3) golgi 4) endoplasmic reticulum 5: O 5) mitochondria44- Which organelle is responsible for the storage, modification, and packaging of proteins for secretion? a) Nucleus b) Ribosome c) Lysosome d) Golgi apparatus 45- Which organelle is responsible for the production of enzymes involved in cellular respiration? a) Nucleus b) Mitochondria c) Chloroplast d) Vacuole 46-What is the function of the nucleoid in prokaryotic cells? a) Storage of genetic information b) Synthesis of lipids c) Protein synthesis d) Regulation of water balance 47- Which organelle is responsible for the formation of spindle fibers during cell division? a) Nucleus b) Centriole c) Golgi apparatus d) Endoplasmic reticulum 48- What is the function of the contractile vacuole in certain single -celled organisms? a) Energy production b) Intracellular digestion c) Regulation of water balance d) Synthesis of proteinsE. coli cells have peritrichous flagella. What does this mean?