Chapter 3, Cells Video Solutions, Hole’s Essentials of Human Anatomy & Physiology

01:25

Problem 1

An adult human body consists of about ____ cells.
a. 2 billion
c. 30 trillion
b. 50 billion
d. 8 quadrillion

Shubham Kumar

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00:43

Problem 2

Define cell.

Ahmed Ali

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02:15

Problem 3

Discuss how cells differ from one another.

Briana De La Torre

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01:43

4. The three major parts of a cell are ____
a. the nucleus, the nucleolus, and the nuclear envelope
b. the nucleus, cytoplasm, and the cell membrane
c. a nerve cell, an epithelial cell, and a muscle cell
d. endoplasmic reticulum, Golgi apparatus, and ribosomes

Qudsiya Anis

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01:22

Problem 5

Explain the general function of organelles.

Heidi Luczynski

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01:01

Problem 6

Define selectively permeable.

Narayan Hari

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Problem 7

Describe the structure of a cell membrane and explain how this structural organization provides the membrane's function.

Kaela Piechowicz

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01:24

Problem 8

List three functions of membrane proteins.

Emily Himsel

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01:33

Problem 9

Match the following structures with their definitions:
(1) Golgi apparatus
(2) mitochondria
(3) peroxisomes
(4) cilia
(5) endoplasmic reticulum
(6) cytoskeleton
(7) vesicles
(8) ribosomes
A. sacs that contain enzymes that catalyze a variety of specific biochemical reactions
B. structures on which protein synthesis occurs
C. structures that house the reactions that release energy from nutrients
D. a network of microfilaments and microtubules that supports and shapes a cell
E. a structure that adds sugars to certain proteins and processes them for secretion
F. membrane-bounded sacs
G. a network of membranous channels and sacs where lipids and proteins are synthesized

H. hairlike structures that extend from certain cell surfaces and wave about

Mishal Gul

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Problem 10

List the parts of the nucleus and explain why each is important.

Marisa A

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02:43

Problem 11

Distinguish between active and passive mechanisms of movement across cell membranes.

Sirisa Reddy

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01:29

Problem 12

Match the transport mechanisms with their descriptions.
(1) diffusion
(2) facilitated diffusion
(3) filtration
(4) active transport
(5) endocytosis
(6) exocytosis
A. the cell membrane engulfs a particle or substance, drawing it into the cell in a vesicle
B. movement down the concentration gradient with a carrier protein, without energy input
C. movement down the concentration gradient without a carrier protein or energy input

D. a particle or substance leaves a cell in a vesicle that merges with the cell membrane
E. movement against the concentration gradient with energy input
F. hydrostatic pressure forces substances through membranes

Courtney Titus

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03:09