Kevin’s Cards about Organisms and Their Needs Flashcards Preview

Kevin Jimbi K12 Homeschool > Kevin’s Cards about Organisms and Their Needs > Flashcards

Flashcards in Kevin’s Cards about Organisms and Their Needs Deck (109)
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1

What are the 3 challenges of life

Obtaining and Using energy, reproducing, maintaining structure

2

What are organism’s basic needs

Water, Oxygen, Carbon Dioxide, Food, The right Environment

3

What happens when plants do not receive enough water

When plants do not receive enough water, its cells, do not keep their shape. They shrink, and the plant wilts

4

True or False: Water is necessary for physical and chemical processes

True

5

What must happen to substances that are important for survival before they can be used

Substances that are important for survival must be dissolved in water before they can be used by organisms

6

How do bacteria obtain water

Bacteria obtain water by allowing individual water molecules to enter through the cell membrane

7

Why is water important

-Sweating
-Saliva
-Fighting Disease
-Protection
-Oxygen

8

Why do cells need oxygen

Cells need oxygen for the many chemical reactions taking place in your cells that release energy

9

What do single-called organisms use to meet their basic needs

Other chemicals other than oxygen

10

True of False: All organisms can survive in oxygen

False

11

What is Iron used for in the body

Iron is a material needed to build red blood cells

12

Adaptation Definition

Something about an organism that allows it to live and reproduce effectively in its particular environment

13

Why can many organisms survive in places

Many animals can survive in places only because they are able to take shelter from the outside environment

14

What does offspring need for reproduction to succeed

The offspring needs room to grow

15

What happens if a person’s internal temperature climbs above 44 degrees

If a person’s internal temperature climbs above 44 degrees, important chemicals in the body are destroyed

16

When do you shiver and sweat

You sweat when you are too warm and shiver when you are too cold

17

What are sweating and shivering

Adaptations

18

If a person gets too hot what happens to the blood flow

More blood flows to the skin

19

How does sweating cool you down

Sweat glands in the skin produce a solution of mostly water that evaporates through pores at the skin’s surface. Evaporation uses heat energy. Loss of heat from the skin cools the blood, and the cooled blood flows back through the body

20

How does shivering warm you up

Shivering is a way of getting warm. The muscles used in shivering produce extra heat, and this extra heat will warm you

21

What happens to blood vessels during shivering

During shivering, blood vessels in the skin constrict. As a result, less blood would loose heat to the air. This conserves body heat

22

Homeostasis Definition

Maintenance of a stable condition in a system, generally by processes that compensate for changes

23

Endotherms Definition

An animal that regulates its body temperature by producing heat within its own tissues

24

Ectotherms Definition

An animal that regulates its body temperature by using heat from the surrounding environment

25

Where do plants sweat from

Stomata

26

Stomata Definition

Tiny openings in the leaves of a plant through which the plant takes in and releases gases

27

What happens to excess water in a paramecium

Excess water in a paramecium is collected in a vacuole called the contractile vacuole. When the vacuole is full, it opens a small pore to the outside and contracts, expelling the water.

28

How much water do living organisms consist of

Living organisms are about 50% to 90% water

29

How do humans lose water

Humans lose water through their skin, lungs, kidneys, and intestines

30

What happens to cells when too much water is lost

When too much water is lost, cells become dehydrated