Lesson 3: Characteristics of Life

Question 1

Living things are made up of?

Answer 1

One or more cells

Question 2

They are the basic functional unit of life

Answer 2

Cells

Question 3

Bacteria, yeasts, and some protists contains how many cells?

Answer 3

One cell or unicellular organisms

Question 4

Humans, plants, some protists, and most fungi contains how many cells?

Answer 4

Two or more or multicellular organisms

Question 5

They are agents that are acellular, meaning they don’t have cells. They are not considered as living things.

Answer 5

Viruses

Question 6

Enumerate the biological levels of organization

Answer 6

Cell > Tissue > Organ > Organ System > Organism > Population > Community > Ecosystem > Biome > Biosphere

Question 7

What is the process by which animals, plants, and microorganisms acquire food?

Answer 7

Nutrition

Question 8

What is the process by which plants and other autotrophs can produce their own food?

Answer 8

Photosynthesis

Question 9

Plants and other autotrophs can produce their own food which is why they are classified as?

Answer 9

Autotrophs or producers

Question 10

Animals, non-green plants, and some microorganisms feed on organic substances from other organisms for their energy. Their dependence on other organisms for food and energy classifies them as?

Answer 10

Heterotrophs

Question 11

It is the total of all the chemical processes involved in obtaining food, converting food to chemical energy, and transforming energy into usable forms by cells.

Answer 11

Metabolism

Question 12

The process by which the breakdown of food substances releases the energy

Answer 12

Respiration

Question 13

Plants convert solar energy into useable _______ through photosynthesis

Answer 13

Energy of carbohydrates

Question 14

Organic compounds produced by plants are converted into the chemical energy of _____ in the process of cellular respiration

Answer 14

Adenosine Triphosphate (ATP)

Question 15

The process by which animals rid themselves of waste products and of the nitrogenous by-products of metabolism

Answer 15

Excretion

Question 16

How does plants execute excretion?

Answer 16

The water is eliminated through the stomatal pores of fruits and leaves

Question 17

It is any self-regulating process by which biological systems tend to maintain stability while adjusting to conditions that are optimal for survival

Answer 17

Homeostasis

Question 18

It is a means by which genetic information is passed from one generation to the next

Answer 18

Reproduction

Question 19

The method in which reproduction of organisms may not involve sex cells or gametes

Answer 19

Asexual reproduction

Question 20

The method in which reproduction of organisms involves the use of sex cells

Answer 20

Sexual reproduction

Question 21

It pertains to the permanent increase in size and volume by converting food that we intake to become part of our body cells

Answer 21

Biological growth

Question 22

It is different from growth. It makes an organism more complex or even changes its form

Answer 22

Biological development

Question 23

Is an action of an organism or part of an organism that causes a change of position or place

Answer 23

Movement

Question 24

They are the non-living environmental factors such as light, pressure, temperature, chemical, gravity, and others that greatly affect living things

Answer 24

Stimuli

Question 25

The reaction of one organism towards a stimulus

Answer 25

Tropism

Question 26

The ability of organisms to sense and respond to a stimulus is called

Answer 26

Sensitivity

Question 27

Is the ability of an organism to become suited to its environments

Answer 27

Adaptation