What Is Life? A Guide to Biology with Physiology
4th Edition
ISBN: 9781319065447
Author: Jay Phelan
Publisher: W. H. Freeman
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Question
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
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
This component of cell walls functions to link and connect cellulose.
Select one:
a.
cellulase
b.
hemicellulose
c.
adherin
d.
pectin
e.
expansin
Chapter 4 Solutions
What Is Life? A Guide to Biology with Physiology
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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_forwardA certain seaweed plant is found in estuaries. At high tide, the plant is exposed to sea water; at low tide, the plant is exposed to brackish water (less salty water). The concentrations of some dissolved materials remain virtually constant in the cells of the seaweed.arrow_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_forward
- Electrical 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_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_forwardA 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_forward
- Which of the following is the best example of potential energy in a cell?a. Cell division b. A molecule of glucose c. Movement of a flagellum d. Assembly of a cellulose fiberarrow_forwardWhen 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_forwardWhy 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_forward
- What does asymmetry of the membrane refer to? O A. Differences in the arrangements and structures of the phospholipids in the bilayer. B. Differences in the arrangements, structures and kinds of proteins in the bilayer. C. Differences in the occurrence of carbohydrates in glycosylated proteins and lipids in the bilayer. D. Both A and B O E. All of these.arrow_forwardPhospholipids can move from one leaflet (layer) to the other in a cell membrane bilayer by A. increased diffusion B. flippases and floppases. C. lateral diffusion. D. biosynthesis. Diffusion of membrane proteins was demonstrated by fusing human cells and mouse cells that had membrane proteins labeled with ________ of different colors. A. stained lipids B. fluorescent dyes C. radioactivity D. EPR detectable spin labelsarrow_forwardIn the process of exocytosis, vesicles coming from the inside of the cell fuse with the plasma membrane which travels across the membrane to be released outside the cell. This type of transport usually applies to enzymes and hormones. Can you cite an Texample in plants where this form of transport is beneficial? How about in animals?arrow_forward
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