Human Body

Question 1

The structural and functional characteristics of all organisms are determined by their _____

Answer 1

chemical makeup

Question 2

It involves how atoms, such as hydrogen and carbon, interact and combine into molecules.

Answer 2

Chemical Level of Organization

Question 3

The basic structural and functional units of organisms, such as plants and animals.

Answer 3

Cells

Question 4

Molecules can combine to form _____.

Answer 4

Organelles

Question 5

The small structures that make up some cells.

Answer 5

Organelles

Question 6

It is a group of similar cells and the materials surrounding them.

Answer 6

Tissue

Question 7

______ is composed of two or more tissue types that together perform one or more common functions.

Answer 7

Organ

Question 8

It is a group of organs classified as a unit because of a common function or set of functions.

Answer 8

Organ System

Question 9

_____ any living thing considered as a whole, whether composed of one cell, such as a bacterium, or of trillions of cells, such as a human.

Answer 9

Organism

Question 10

It is a complex of organ systems that are mutually dependent upon one another

Answer 10

Human Organism

Question 11

The simplest level of organization in the human body

Answer 11

Atom

Question 12

Combine to Form molecules

Answer 12

Chemical Level

Question 13

Molecules aggregate into cells or form organelles, such as the nucleus and mitochondria, which make up cells.

Answer 13

Cell Level

Question 14

Cells form tissues, or Similar cells and surrounding materials make up tissues.

Answer 14

Tissue Level

Question 15

combine with other tissues to form organs

Answer 15

Organ

Question 16

Organs work in groups

Answer 16

Organ System

Question 17

All organ systems work together to form ___.

Answer 17

Organism

Question 18

It refers to the specific relationship of the many individual parts of an organism, from cell organelles to organs, interacting and working together

Answer 18

Organization

Question 19

Living things are highly organized. (True or False)

Answer 19

True

Question 20

Not all organisms are composed of one or more cells. (True or False)

Answer 20

False

Question 21

All cells, in turn, are composed of highly specialized organelles, which depend on the precise functions of large molecules. (T or F)

Answer 21

False (SOME CELLS)

Question 22

Disruption of this organized of the cell state can result in loss of function and death. (True or False)

Answer 22

True

Question 23

It is the ability to use energy to perform vital functions, such as growth, movement, and reproduction.

Answer 23

Metabolism

Question 24

It is the ability of an organism to sense changes in the environment and make the adjustments that help maintain its life.

Answer 24

Responsiveness

Question 25

refers to an increase in size of all or part of the organism.

Answer 25

Growth

Question 26

It can result from an increase in cell number, cell size, or the amount of substance surrounding cells

Answer 26

Growth

Question 27

_______ includes the changes an organism undergoes through time.

Answer 27

Development

Question 28

Human development begins when ______________ and ends with death.

Answer 28

the egg is fertilized by the sperm

Question 29

It is change in cell structure and function from generalized to specialized.

Answer 29

Differentation

Question 30

When cells start to specialize to become different cell types, such as skin, bone, muscle, or nerve cells. These differentiated cells form tissues and organs.

Answer 30

Differentiation

Question 31

It is the formation of new cells or new organisms.

Answer 31

Reproduction

Question 32

Without reproduction of cells, growth and tissue repair are possible. (True or False)

Answer 32

False (impossible)

Question 33

Without reproduction of the organism, the species becomes extinct. (True or False)

Answer 33

True

Question 34

It is the existence and maintenance of a relatively constant environment within the body despite fluctuations in either the external environment or the internal environment.

Answer 34

Homeostasis

Question 35

When most body cells are surrounded by a small amount of fluid, and normal cell functions depend on the maintenance of the cells’ fluid environment within a narrow range of conditions, including temperature, volume, and chemical content. These condition is called?

Answer 35

Variables

Question 36

It normally maintain body temperature near an average normal value, or set point such as sweating or shivering.

Answer 36

Homeostatic mechanisms

Question 37

Most ___________ are governed by the nervous system or the endocrine system.

Answer 37

Homeostatic mechanisms

Question 38

Homeostatic mechanisms are not able to maintain body temperature precisely at the set point. (True or False)

Answer 38

True - Because homeostasis is maintained when body temperature increases and decreases slightly around the set point, producing a normal range of values or as long as body temperatures remain within this normal range.

Question 39

A changed variable is a ______ because it initiates a homeostatic mechanism.

Answer 39

stimulus

Question 40

Normal body temperature depends on the coordination of multiple structures, which are regulated by the control center, or hypothalamus, in the brain. (True or false)

Answer 40

True

Question 41

If body temperature rises, sweat glands (the effectors) produce ____

Answer 41

sweat and the body cools

Question 42

If body temperature ____, sweat glands do not produce sweat

Answer 42

falls

Question 43

The stepwise process that regulates body temperature involves the interaction of _____, _____ and _____.

Answer 43

receptors, the control center, and effectors.

Question 44

In the case of _____, thermoreceptors in the skin and hypothalamus detect the increase in temperature and send the information to the hypothalamus control center.

Answer 44

elevated body temperature