Cell: The Unit of Life Questions and Answers

Jim was born with Tay-Sachs disease. Which of the following organelles is affected if the condition is caused by the inability to break down toxic substances? centrioles lysosomes mitochondria the Golgi apparatus

A cell's hormonal sensitivities are determined by the (A) Chemical nature of the hormone (B) Quantity of circulating hormone (C) Shape of hormone molecules (D) Presence or absence of appropriate receptors (E) Thickness of cell membrane

Select the correct answer from each drop-down menu. Compared to its surroundings, the concentration of solutes is low inside a cell. So, the cell is in a solute in this cell uses energy for its transport from the cell to its surroundings. This type of transport is called

Proteins on the surface of vesicles determine where the vesicles go. Which cell organelle provides the Instructions for these proteins? A endoplasmic reticulum B. lysosome C mitochondria D. nucleus

Why is the cell theory considered a scientific theory? It has always been proven to be correct. It was proposed by several scientists. It is an explanation that is well supported. It was formed over 100 years ago.

(1 points) Draw the arrangement of a phospholipid bi-layer. Label the phosphate end as well as the fatty acid chains. Label polar and nonpolar areas. Label the hydrophilic as well as hydrophobic areas.

All of the following are true about insulin EXCEPT decreases the plasma glucose concentration It binds to receptors in the cytoplasm of its target cells stimulates glycogen formation in liver and muscle cels It is secreted from the beta cels pancreas

Studies of fat cells and thyroid cells show that fat cells have fewer mitochondria than thyroid cells. A biologist would most likely infer that fat tissue (1) does not require energy (2) has energy requirements equal to those of thyroid tissue (3) requires less energy than thyroid tissue (4) requires more energy than thyroid tissue

23. Which unstained cellular organelles can be seen with a compound light microscope that has a total magnification of 400x? (1) cell membrane, ribosomes, vacuole (2) cell wall, vacuole, chloroplast (3) nucleolus, chloroplast, ribosomes (4) mitochondria, nucleus, centrioles

17. After a cell was treated with a certain chemical, the ribosomes stopped functioning. Which cell activity was immediately affected by this change in ribosome function? (1) intracellular transport (2) protein synthesis (3) aerobic respiration (4) excretion of metabolic wastes

8. Click on "Return to Cell Diagram." Click on "Rough Endoplasmic Reticulum." Why does the rough ER appear pebbled? a. 9. Click on "Return to Cell Diagram." Click on "Ribosomes." Ribosomes are the site of what process? a. Click on "plant cell" underneath the diagram to view a plant cell. 1. Move your mouse over the plant cell to see the names of the organelles. Name five organelles found in a plant cell that were also studied in the animal cells questions above. 2. What two organelles are found in the plant cell that you did not see in the animal cell? 3. Click on "Cell Wall." What molecule makes up the cell walls? 4. Click on "Return to Cell Diagram." Click on "Chloroplast." What substance inside the chloroplast makes it green? Part II Use an outside reference to label each and write in 1 word, what it's function is or a way to remember it's function. At the bottom of each diagram fill in the answer.

Henrietta's cells were used to develop the vaccine for polio and many other diseases. They are [?] today. A hard to find B still in use C no longer in use

Henrietta's cells were used to develop the vaccine for [?] and many other diseases. They are[ ] today. A polio B AIDS C malaria

A An "organism" with six genome would be in a gametes contained three diploid chromosomes in its state if one of its chromosomes. B mutated C haploid

The "powerhouses" of the cell are [?] called [ ]. A. eukaryotes B. organelles C. cristae D. prokaryotes

A tenant of cell pinched incorporated primitive cell, which then functioned as an organelle. is that a off and a more A. spontaneous formation B. cell fragmentation C. endosymbiotic theory D. exosymbiotic theory

The region where water is "not allowed" around the fatty acid tails is called A. polar. B. hydroponic. C. hydrophillic. D. hydrophobic.

A(n) _ is fatal to a cell when it becomes too large. A. low surface area-to-volume ratio B. high surface area-to- volume ratio C. energy dependent diffusion process D. abundance of mitochondria

6CO₂ + 6H₂O → C6H12O6 + 602 Which molecule(s) in the reaction above is/ are processed in the mitochondria? A. O2 only B. C6H12O6 and 02 C. C6H12O6 and CO2

What difference in the attitude toward death do you find between Brueghel's painting and Benetton's sculpture? A. Brueghel focuses on Icarus' death; Benetton focuses on the nereids who care for Icarus. B. Brueghel emphasizes Icarus' death; Benetton emphasizes Icarus' fall through the air. C. Brueghel minimizes death, focusing on the living; Benetton minimizes death, focusing on Icarus' wings.

Which sentence uses a semicolon correctly? (Remember, a semicolon joins two complete sentences.) A. She didn't know if it would be better for him to die; she couldn't handle him married to the lady. B. The daughter of the king was very sad; never showed it. C. Never before had such a case occurred; had a subject dared to love the daughter of the king.

6CO2 + 6H₂O → C6H12O6 +602 The equation above indicates that in addition to six glucose molecules, photosynthesis produces six_____ molecules. A CO₂ B O2 C H₂O

Which of the following characters was most affected by the princess possessing the secret of what was behind the doors? A. The king B. The lover C. The people in the arena

The result of a transduced cell signal will result in [?] response. A a Golgi apparatus facilitated B an energy- specific type of C a myriad of cellular activities as a

Which is not a basic function of a cell? A. Obtaining and storing energy B. Removing waste from the cell C. Stopping homeostasis from happening D. Transferring genetic information

Enzyme denotes the exact conformational match an enzyme and its substrate must have to interact. A. alpha pleat B. specificity C. specific activity D. activation energy

Some eukaryotic organelles' membranes don't match the DNA of the plasma membrane, suggesting they were engulfed. A. unintentionally B. intentionally C. never D. randomly

The fluidity of the cell membrane is maintained by A. the absence of double bonds in the bilayer. B. the presence of double bonds in the bilayer. C. the non-polarity of the bilayer. D. transmembrane proteins.

A purified centrosome is mixed with purified tubulin subunits and GTP in an artificial membrane-bound container. A coordinate system is formed. What will be required to maintain this coordinate system? The addition of new tubulin subunits, GTP, and a new centrosome. The addition of new tubulin subunits and GTP. The addition of GTP and GDP, The addition of GTP and a new centrosome.

Identify the dependent variable in the following experiment: A scientist grew bacteria on gel in her lab. She wanted to find out if the bacteria would grow faster on gel A or gel B. She placed a few bacteria on gel A and a few on gel B. After 24 hours, she observed how many bacteria were present on each type of gel. a growth of the bacteria b gel A C gel B

A group of plant cells was exposed to radiation, which damaged the chloroplasts and caused them to lose function. If the mitochondria were unharmed, what would happen to the overall function of the plant cells? A. The cells would not be able to replicate DNA, but would be able to break down waste. B. The cells would not be able to make food, but would be able to release energy from blomolecules. C. The cells would not be able to break down waste, but would be able to replicate DNA. D. The cells would not be able to release energy from blomolecules, but would be able to make food.

Which cell structures are seen in all cell types? Check all that apply. DNA cytoplasm nucleus ribosomes cell membrane

A student wonders whether removing the nucleus from a cell would result in a new prokaryotic cell. Why would this procedure fail to produce a prokaryotic cell? The cell would lack genetic information. The cell would lack the structure that is needed to produce energy. The cell would lack the structure that is needed to protect the cell's organelles. The cell would lack control over materials that move into and out of the cell.

In which of the following is there NO use of long distance cell signaling? A. endocrine system B. immune system cells C. circulatory system D. gap junction connected cells

Maurice plans to become a professional wrestler and wants to build his strength. Which is the best strategy for Maurice? A. eating food rich in protein and saturated fat to increase his muscle mass B. devising a training program that builds muscle mass slowly C. taking vitamins or a dietary supplement that is rich in protein

When would you use a vesicle model for studying cell degeneration? a) In experiments where the cell cycle needs to be tested b) The use of vesicles is always recommended c) In experiments where the membrane integrity needs to be tested d) In experiments related to changes in the cell content

Hector is back from his morning run and is feeling lightheaded because his energy is depleted. Which food item will provide him with a quick source of carbohydrates? A. fruit juice B. Tuna fish C. scrambled eggs and butter D. beans

What is the term used to describe the clustering and aggregation of B-cell receptors leading to signal transduction from the receptor complex to the inside of the cell? A) germinal centering B) antigen presentation C) somatic recombination D) cross-linking

List the three different types of cells found in most multicellular organisms (based on their ability to divide and differentiate). Are some types more important than others? please explain your reasoning

What is meant by the focal length of a camera sensing system and (1) how would this be important for sensors at various altitudes (give example calculations) and (2) give example calculations of how the (GD) ground sampling astance (pixel) chanses with the autude and focal Diane distance.

Cellular resistance to insulin is critically important in the development of Type 2 Diabetes Mellitus. How does insulin resistance affect insulin production in the short-term (1 point)? In order to receive credit for this question, please respond to this question in two sentences or less.

How does the lagging strand differ during DNA replication? (Multiple choice, it's one of 4 options) 1) The lagging strand is synthesised towards the replication fork. 2) The DNA synthesis reaction goes in the 3' to 5' direction. 3) The lagging strand is synthesised in ~1000 base pair segments. 4) The lagging strand is synthesised by DNA polymerase I. I'm fairly sure it isn't 1 or 2, help is appreciated

Anster the following questions 1. What bases are found in RNA? 2. What bases are found in DNA? 3. Which strand is the messenger RNA complementary to? 4. Which strand is the messenger RNA nearly identical to? 5. What proteins help to direct the RNA Polymerase to the right location? 6. The ________ end of a new nucleotide is always added to the _______ end of an existing strand. 7. Distinguish between the following two terms: chromosome and gene.

Aquaporins require cellular energy to function. True False

Why do ions have difficulty moving through the cellular membrane? a) They are too large and therefore are repelled by the exterior of the phospholipid bilayer.. b) They are too small and therefore are repelled by the interior of the phospholipid bilayer.. c) They are charged and therefore are repelled by the interior of the phospholipid bilayer. d) They are charged and therefore are repelled by the exterior of the phospholipid bilayer.

Put the steps of the energy investment phase of glycolysis in order. Dihydroxyacetone phosphate is also tumed into glyceraldehyde-3-phosphate Phosphofructokinase further reduces our molecule, making it fructose-1,6-bisphosphate. Isomerase converts glucose-6-phosphate to fructose-6-phosphate. Hexokinase phosphorylates glucose using ATP, the glucose is then called glucose-6-phosphate Dihydroxyacetone phosphate and glyceraldehyde-3-phosphate are made from fructose-1,6 bisphosphate.

Which of the following methods cannot be used to identify an animal virus? Use of specific anti-viral antibodies Detection of patient antibodies against the virus Plaque formation Cytopathic effects Electron microscope

The medium used for antibiotic sensitivity testing is: Tryptic Soy Agar (TSA) LB with ampicillin LB with ampicillin and arabinose Mueller-Hinton agar

A "susceptible" or "sensitive" result in the Kirby-Bauer test means that the antibiotic will not be effective in treating the bacteria. True False

A scientist wants to study the kinetics of a specific membrane protein. They ligate the DNA coding region of the protein to the DNA coding region for GFP and introduce the DNA into cells. A day or two later, they observe the cells under the microscope and they are fluorescing green. They then shine a laser at a region of the cell repeatedly (or continuously) that region loses its fluorescence. They monitor a separate region of the cell and find that fluorescence never decreases in that area. What is the full name of the technique that they performed? What can they conclude from their result? a) What is the full name of the technique that they performed? The technique is known as Fluorescence Loss in Photobleaching (FLIP). b) What can they conclude from their result?