Cell: The Unit of Life Questions and Answers

LAB 4 Are you a hid Which of the foll

16 QUIZ 14 Wh 3 2452285 quizzes 5493550 tak

Which of the following observations constitutes evidence that mitochondria evolved before chloroplasts Mitochondria are aerobic Chloroplasts are photosynthetic Aerobic bacteria evolved before photosynthetic bacteria cyanobacteria Some protists have separately evolved their own plastids chloroplast like structures through endosymbiosis of cyanobacteria or ev through endosymbiosis of photosynthetic protists All Eukaryotes have mitochondria only a subset of Eukaryotes have chloroplasts

Dil sands in the reservoir are as solid as a hockey puck Select Select resource needs to be recovered by thermal or steam me 50 80 25 water to steam which is piped into an injection well to stage separation process starts with a fluid that is Select with a product that is less than Select of the is Select crude is necessary for the oil sands process to be economically competitive y heats he multi water and finishes water Production from the tar sands compared to Middle East oil production A price of 70 a barrel for

Vocabulary Review Write the word from the word bank in the correct Diffusion Osmosis require the cell to use energy M Tr The diffus

Arrange the sentences describing the process of phagocytosis in the correct order Enzymes in the lysosome digest the particle within the newly formed endosome A lysosome fuses with the vesicle The inside of the plasma membrane becomes coated with a protein called clathrin The waste products are removed from the cell by exocytosis Extensions of the plasma membrane called pseudopods extend away from the cell and The vesicle containing the particle enters the cell and clathrin disassociates with the pl

2 List the 3 main types of polysaccharides complex carbohydrates and fill in the table below Name What organism makes it What is its function Where is it stored deposited

The influenza virus is typical of many animal viruses in that is has an envelope composed of lipids and glycoproteins Which of the following statements about the envelope is ACCURATE 1 The envelope is formed via the action of integrase 2 The envelope glycoproteins are encoded by genes found in the host genome 3 The envelope is obtained from the host cell upon entry into the cell 4 The envelope is obtained from the host cell when the virus buds from the plasma membrane 5 The envelope is inside the capsid

3 Determine whether the types of transport are passive or active osmosis diffusion against concentration gradient down the concentration gradient facilitated transport channel protein requires ATP Passive Transport Active Transport

Which amino acid has an R group that forms a covalent bond with the polypeptide backbone thereby restricting the flexibility of the polypeptide glycine cysteine proline none of the above

Study the automated FBC for Patient X Patient X has the WBC count and indicated by the RBC indicies indicated by the platelet count Together this is known as indicat

Which of the following statements is NOT TRUE RNA is more stable than DNA G C base pairs are stronger than A T base pairs Purines always base pair with pyrimidines and vice versa Boiling disrupts secondary structure of both DNA and RNA

Question 1 Not vet Phospholipids

The endomembrane system of a cell involves the production of a protein that will not STRUCTURE AND FUNCTION remain in the cell What process will be use exocytosis O pinocytosis receptor mediated endocytosis phagocytocic 33 5 QUESTIONS QUESTION POINTS

Which statement best describes what happens to a cell as it differentiates A Each cell receives a unique set of genes that determines the type of cell it will become B All of the genes are turned on all the time and used as the cell develops O C DNA is gained or lost depending on the needs of the cell at a given time D Specific genes are turned on or off depending on the cell s environment

ing descriptions of enzyme inhibition as either reversible inhibition or irreversible inhibition Reversible inhibition forms an ionic bond with the enzyme Answer Bank forms a covalent bond with the enzyme can interfere with the production of vital cellular resources Irreversible inhibition used by the cell to regulate metabolic processes

What are the three parts of the cell theory

myelin sheath nucleus dendrite axon terminal cell body 2 In the neuron above which way would the impulse move

Name this structure Cilia 02015 Ponce Education e O Mitochondria O Flagella O Cell body O Chloroplast

Name these structures O chloroplasts ribosomes Operoxisomes Olysosomes O vacuoles Question 7 2 pts

O Nucleus O Golgi apparatus O Endoplasmic reticulum O Mitochondria O Cytoplasm

Identify this structure of a plant cell Nucleus Ochloroplast O Cell wall Plasma membrane Vacuole

and mention any website you might use for help Please don t just copy and paste Discuss the importance of the passive transport mechanism of osmosis Why is this such an important concept to understand Identify areas of a multicellular organism this might be essential to its homeostasis Many times discussion boards can give the impression of simply meeting the need for what some would call busy work However in the a potentially isolating han in person classroom For that reason when you submit a response environment like an online class discussion boards play the same role as communication should be used with the overall impression as though you were speaking in a classroom giving a statement or a presentation

QUESTION 4 Which of the following best explains th O Cells need to be small to maintain O Cells must be small so that they ca Cells need to transport materials a O

A well known danger of desert living is heat stroke While most people think about dehydration and lack of water as a major issue many don t realize that heat denatures proteins Therefore heat can damage tissues because proteins play critical roles in tissue structure and function True False

Select the substances that cannot cross the plasma membrane by passive transport Carbon dioxide and oxygen Hydrogen ions Steroid hormones such as estrogen and testosterone Large proteins

asma Membrane Component Phospholipid Glycoprotein Glycolipid Integral protein Peripheral protein Cholesterol Definition Carbohydrate group attached to a phospholipid Protein found on either the extracellular or intracellular face of the plasma membrane Lipid found embedded in the fatty acid tails of the plasma membrane Main component of the plasma membrane composed of a phosphate glycerol head and two fatty acid tails Protein that spans both surfaces of the plasma membrane Carbohydrate group attached to a protein

Select the statement s which is are incorrect regarding membrane fluidity Proteins are in a fixed position in the plasma membrane and display no motion The more unsaturated fatty acids found in the phospholipid bilayer the greater the membrane fluidity At low temperatures cholesterol increases membrane fluidity At high temperatures cholesterol increase membrane stability Cholesterol associates with the phosphate heads of the phospholipid bilayer Saturated fatty acids found in the phospholipid bilayer increase membrane fluidity

Highlight the sentence s that describes s the Fluid Mosaic model Select at least 1 sentence to check your answer The currently accepted model of the plasma membrane was proposed by Singer and Nicolson in 1972 They used the term Fluid Mosaic Model to describe the components of the plasma membrane and how those components interact with one another The plasma membrane is composed of a myriad of pieces that move throughout the sea of phospholipids The main component of the plasma membrane are the phospholipids The phospholipids form a bilayer structure with their hydrophilic phosphate heads in contact with the aqueous environment of the extracellular and intracellular environments Integral proteins which span the entire membrane interact with the phospholipid bilayer based on their hydrophilic and hydrophobic domains Peripheral proteins are located on either side of the plasma membrane Carbohydrate and lipid molecules associate with the proteins on the surface of the cell as well Cholesterol which is hydrophobic embeds itself within the fatty acid tails of the phospholipids All of these components contribute unique functions to the plasma membrane

Which of the following is true for both eukaryotic and prokaryotic cells O Specialized organelle for photosynthesis Genetic material enclosed in nucleus Presence of cytoskeleton Specialized organelle for energy ATP production Presence of a plasma membrane

If the third nucleotide of the DNA sequence for the fourth codon 12th nucleotide overall was changed to Cytosine C what would happen to the amino acid sequence How do you think would this affect the protein overall

6 Infer Sometimes people who have issues with their joints replacement surgery The joint is replaced with an artificial joint Not all artificial joints are the same Infer why there are different types of artificial joints 7 Argue A city sidewalk inspector is considering installing rubber

Identify the structures at the arrows in the images below Arrows have a tail not just a triangle A 0 0 Chlamydoconidia Yeast Hyphae Pseudohyphae B 10 1016 j ram 2022 08 00

a b d a b c 1 How fluid mosaic model describes cell membrane Membrane has a monolayer of lipids and proteins Proteins form the bilayer of the cell membrane Lipids form a bilayer of the cell membrane and proteins are asymmetrically distributed Lipids form a bilayer of the cell membrane and proteins are symmetrically distributed 2 Unsaturated fatty acids in phospholipid tail Increasefluidity and permeability of the cell membrane Unsaturatedtails are arranged in a way that maximizes interactions between the tails These interaction decrease bilayer fluidity Saturatedtails are arranged in a way that minimizes interactions between the tails These interaction decrease bilayer fluidity Has no impact on the membrane fluidity

Listen The purpose of an enzyme is to increase the activation energy of a reaction allowing the cell to conserve energy and perform the process more efficiently True False

The Kreb s cycle takes place in the cytoplasm mitochondrial matrix plasma membrane golgi apparatus nucleus of a eukaryotic cell

PROBLEMS The following three figures show all the chromosomes within a chromosomes are of the same shape size but of different colors X 5 Figure 1 6 X A Figure 2 6

PROM Part 1 In Chapter 4 we took a look at the different structures that make up eukaryotic and prokaryotic cells Each structure has a unique structure and function that is critical for the cell to survive and carry out its function For this week I would like you to identify a singe cell structure such as a flagellum a cell wall etc and imagine what would happen if a cell were to lose that structure or it stopped working Could it survive If it can survive without the structure in what way would it be changed If it couldn t survive exactly how why would it die You should ensure that your answers are details Part 2 After you have engaged with the lecture recordings read the book completed the guided reading activities and weekly assessments are there any learning objectives or topics that still cause confusion If so please identify them in your post Other classmates may reply and offer assistance and I will be posting videos each week addressing such topics DIRECTIONS Compose an initial discussion board post by creating a new thread The initial post should be 200 250 words and should include screen shots or links to the sources claims you reference Be sure to fully address the prompt above Compose an initial discussion board post by creating a new thread The initial post should be 200 250 words and should include screen shots or links to the

Identify the structures in the images using the Mold Structures drawings provided Choose the correct structure from the drop down menus provided A B C D B C select answer select answer select answer select answer D conidia spores conidiophore aerial hypha subsurface hypha

Ils without a nucleus cannot to produce daughter cells

he cytoplasm is composed of the liquid and the organe CELL STRUCTURE custo Give me option Acceptable Formats

12 Charles Darwin recognized that beetles are about the most numerous and diverse animals on earth A newly discovered species of beetles is found to have 18 pairs of homologous chromosomes How many bivalents are formed during the first meiotic division a 0 b 9 c 18 d 36 e none of the above

1 10 points Viral Structures Please label the image to test your knowledge of viral structures an Envelope Nucleic Acid 2000 Capsid Naked nucleocapsid virus Spike

True or False If the statement is true write true If it is false change the underlined word or words to make the statement true inhale 1 Air is pushed out of your lungs when you 2 The pulmonary circulation supplies oxygenated blood to the heart 3 Red blood cells carry oxygen 4 The cardiovascular system can move heat around the body 5 The trachea keeps food out of the lungs 6 The cells in the heart that set the heart rate are called the pacemaker Cri Use eac 12 13 14

Label the parts of the compound light microscope on the table Word Bank Fine adjustment Eyepiece ocular lens Arm Light source Objective lens Diaphragm Coarse adjustment Label the numbered parts of the microscope 1 2 3 4 5 6 7

3 Fill in the table Objective Scanning power Low power High power Magnification of Objective Magnification of eyepiece ocular lens Total Magnification

Produce ATP for the cell Found only in plant cells Involved in photosynthesis Contains catalase which converts toxic hydrogen peroxide into water and oxygen Hollow tubes composed of the protein tubulin Solid rods composed of the protein actin Short numerous hair like microtubule projections that move like oars used for locomotion and lining passageways Long whip like microtubule structures that are few in number used in locomotion Special microtubules used in cell division Found only in animal cells Structure that provides rigid support for the cell Located outside of the plasma membrane Mitochondria Cytoskeleton microfilaments Cytoskeleton microtubules Centrioles Flagella Cilia Peroxisomes Chlorop Cell w

Drag and drop the characteristics to categorize them into prokaryotic or eukaryotic organisms or both Prokaryotic Eukaryotic Prokaryotic and Eukaryotic before nucleus Cilia and flagella Most primitive cell type Animal cell DNA enclosed in the nucleus Organelles ribosomes true nucleus Cell wall All other organelles Smaller of the cell types Larger of the cell types More complex cell type Plant cell Plasma membrane Bacterial cell

Select the statement s that correctly reflect s cell size As a cell increases in size its surface area to volume ratio decreases Only smaller molecules pass through the plasma membrane A cell s surface area plasma membrane increases faster than its volume cytosol Above critical size a cell cannot let in or out materials fast enough to function normally The shorter the distance substances have to travel in the cell the quicker cellular processes can occu Cells that are long and thin flattened or contain microvilli decrease the surface area of the cell

3 4 points Briefly describe the path a protein made by ribosomes that are attached to the endoplasmic reticulum will follow through the endomembrane system in order to be exported from the cell Include in your answer which other organelles the protein will move through how the protein is moved from one organelle to another and the process that a cell would use to export the protein