WHAT IS LIFE? A GUIDE TO BIOLOGY W/PHYS.
5th Edition
ISBN: 9781319446581
Author: PHELAN
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Chapter 4, Problem 9MC
Summary Introduction
Introduction:
A cell wall is an additional layer of rigid support seen in some organisms.
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Students have asked these similar questions
When a cell from flaccid plant tissue is placed into a hypotonic solution:
a.
The cytoplasm will shrink and plasmolysis will occur
b.
Net water movement will be into the plant cell
c.
Lysosomes will remove the excess water, protecting the cell
d.
No net water movement will occur
e.
The plant cell will break open (lyse)
Which of the following statements is INCORRECT about plant cells?
A. They have nucleus with circular chromosomes.
B. They have cytoplasm that contains all of the organelles.
C. They have rigid cell walls.
D. They have a large, fluid-filled space inside that helps them maintain their shape
Below is an image of a plant cell. Which of the following statements correctly matches a component with its labelled feature? [Hint: Please keep in mind where molecules
function and also where they are synthesized].
A. Outer chloroplast membrane
B. Thylakoid membrane
C. Stroma
D. Lumen
E Nucleus
E.
F. Cytoplasm
membrane
Cll
H. Rough ER
I.
Intermembrane Space
J.
Inner mitochondrial membrane
K. Matrix
DNA Methyl Transferases (DNMT) can be found in E and F.
Histones can be found in E and F.
1.
2.
3
rRNA can be found in F.
4.
TRNA can be found in E.
O A. 1, 2 and 3
O B. 1 and 3
O C. 2 and 4
D. 4 only
O E. All of 1, 2, 3, and 4 are correct
Chapter 4 Solutions
WHAT IS LIFE? A GUIDE TO BIOLOGY W/PHYS.
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- (2) a. Mineral salt is essential for growth of a plant. The process responsible for absorption of mineral salt is: a. Mass flow b. Diffusion Active transport C. d. Osmosis b. The reason for my answer is because : a. Absorption occurs due to concentration gradient b. Absorption occurs with the help of energy opposing to diffusion C. Movement as a bulk due to pressure changes d. Absorption through permeable membranesarrow_forwardPlant cell walls contain which of the following inabundance?a. starchb. cellulosec. glycogend. lactosearrow_forwardElectrical gradients ( potential; charges) exists on cell membranes because in part when the cell is at rest... a.The inner surface surface of the cell membrane is more negatively charged than the outer surface. b. the inner surface of the cell membrane is more positively charged than the outer surface. c. The membrane as a whole is hydrophilic on the outside. d. the membrane as a whole is hydrophobic on the outside e.None of the abovearrow_forward
- A biochemist grinds up a sample of plant roots, fungal mycorrhizae, and soil-dwelling arthropods. They then extract a mix of several polymeric molecules. Of the polymers found within the sample, which of the following molecules is least likely to be used as a component of a cell wall? Group of answer choices A. Chitin B. Glucan C. Starch D. Cellulosearrow_forwardBelow are three statements - two of which are truths and one is a lie. Which of the following statements is a lie? Select one: a. Plant cells never shrink with the support of cell wall. b. Low osmolarity means high water content. c. Saltwater fish secrete salt through their gills and have concentrated urine.arrow_forwardAs the environmental temperature decreases, what happens to a cell membrane? A. It becomes more fluid. B. It becomes less fluid. C. It expands. D. It breaks apart. E. A and Darrow_forward
- When a plant cell, such as one from a peony stem, is submerged in a very hypotonic solution, what is likely to occur? Group of answer choices A. the cell will become flaccid B. the cell membrane will lyse C. he cell will become turgid D. plasmolysis will shrink the interior E the cell will burstarrow_forwardWhich macromolecule is a primary component of cell walls, and which argument provides evidence for how the structure of this molecule relates to its purpose within the cell wall? A Lipids are the primary component, and they repel and prevent excess uptake of water because they form carbon chains. B Lipids are the primary component, and they protect the cell and help maintain its shape because they form carbon rings. C Carbohydrates are the primary component, and they repel and prevent excess uptake of water because they form carbon chains. D Carbohydrates are the primary component, and they protect the cell and help maintain its shape because they form carbon rings.arrow_forwardWhich of the following statements about cellular membranes is/are FALSE? A. Only lipids move Within the membrane, while the proteins are anchored and immobile. B. Membranes are composed of lipids and proteins. C. Substances may be transported across membranes by active transport, facilitated transport or diffusion. D. Membrane proteins are classified as integral or peripheral, upon their functionarrow_forward
- Why is the surface area of a cell so important in determining maximum cell size? a. a very large cell needs very little surface area relative to its volume b. a very small cell can't exchange material across its surface c. a very large cell would need to exchange a very large amount of material with the external environment d. a typical cell has more surface area than volume e. all of the abovearrow_forwardIn plants, the cell wall forms as a young plant cell secretes polysaccharides onto the outer surface of its plasma membrane. Being thin and pliable, this primary wall allows the cell to enlarge and change shape. At maturity, cells in some plant tissues deposit material onto the primary wall’s inner surface. Why doesn’t this secondary wall form on the outer surface of the primary wall?arrow_forwardCell junctions called connect the cytoplasm of adjacent plant cells. a. plasmodesmata d. adhesion proteins b. adhering junctions e. chloroplasts c. tight junctions f. gap junctionsarrow_forward
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