Skip to main content
Ch. 3 The Cellular Level of Organization
Martini - Fundamentals of Anatomy & Physiology 11th Edition
Martini, Nath, Bartholomew11th EditionFundamentals of Anatomy & PhysiologyISBN: 9780136874089당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Martini, Nath, Bartholomew 11th EditionCh. 3 The Cellular Level of Organization문제 18
3장, 문제 18

Microvilli are found
(a) Mostly in muscle cells
(b) On the inside of plasma membranes
(c) In large numbers on cells that secrete hormones
(d) In cells that are actively engaged in absorption
(e) Only on cells lining the reproductive tract

검증된 단계별 안내
1
Understand what microvilli are: Microvilli are microscopic cellular membrane protrusions that increase the surface area of cells, enhancing their ability to absorb substances.
Recall the primary function of microvilli: They are mainly involved in absorption rather than secretion or muscle contraction.
Identify the types of cells where absorption is critical: Cells lining the small intestine and kidney tubules have many microvilli to maximize nutrient and ion absorption.
Evaluate each option based on this knowledge: (a) Muscle cells are primarily for contraction, not absorption; (b) Microvilli are on the surface of plasma membranes but specifically where absorption occurs; (c) Cells that secrete hormones typically have other specializations, not microvilli; (d) Cells actively engaged in absorption have numerous microvilli; (e) Microvilli are not limited to reproductive tract cells.
Conclude that the correct answer corresponds to cells with high absorption activity, which is option (d).

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
1m

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Microvilli Structure and Function

Microvilli are tiny, finger-like projections on the surface of certain cells that increase the surface area for absorption. They are covered by the plasma membrane and contain actin filaments for structural support, enhancing the cell's ability to absorb nutrients efficiently.
추천 영상:
가이드 코스
06:04
Functional Groups

Cell Types with Microvilli

Microvilli are predominantly found on epithelial cells involved in absorption, such as those lining the small intestine and kidney tubules. These cells use microvilli to maximize nutrient and ion uptake from their environment.
추천 영상:
가이드 코스
3:00
Types-Of-Phosphorylation-C-2-V-1

Difference Between Microvilli and Other Cell Surface Structures

Microvilli differ from cilia and flagella in both structure and function; while microvilli increase surface area for absorption, cilia are involved in movement of substances across the cell surface. Understanding this distinction helps identify where microvilli are typically located.
추천 영상:
가이드 코스
4:05
Cell Surface Receptors
관련 실천
교과서 질문

Diffusion is important in body fluids, because it tends to

(a) Increase local concentration gradients

(b) Eliminate local concentration gradients

(c) Move substances against concentration gradients

(d) Create concentration gradients

81
views
교과서 질문

How many amino acids are coded in the DNA segment:

CTC–ATA–CGA–TTC–AAG–TTA?

(a) 18

(b) 9

(c) 6

(d) 3

43
views
교과서 질문

What are the four major functions of the endoplasmic reticulum?

153
views
교과서 질문

When a cell is placed in a(n)___solution, the cell will lose water through osmosis. This process results in the___ of red blood cells

(a) hypotonic; crenation

(b) hypertonic; crenation

(c) isotonic; hemolysis

(d) hypotonic; hemolysis

81
views
교과서 질문

List five important factors that influence diffusion rates.

174
views
교과서 질문

Suppose that a DNA segment has the following nucleotide sequence:

CTC–ATA–CGA–TTC–AAG–TTA.

Which nucleotide sequences would a complementary mRNA strand have?

(a) GAG–UAU–GAU–AAC–UUG–AAU

(b) GAG–TAT–GCT–AAG–TTC–AAT

(c) GAG–UAU–GCU–AAG–UUC–AAU

(d) GUG–UAU–GGA–UUG–AAC–GGU

62
views