Meira - Science

Question 1

Name the 8 characteristics of living things

Answer 1

cells, dna, reproduce, grow, respond, adapt, energy, internal balanced

Question 2

What are cells?

Answer 2

All living things/the building blocks of life

Question 3

What is DNA?

Answer 3

Genetic code

Question 4

What does reproduce mean?

Answer 4

Off spring

Question 5

What does grow mean?

Answer 5

Increase in size

Question 6

What is respond?

Answer 6

A reaction to change in environment

Question 7

What does adapt mean?

Answer 7

Change over time for survival

Question 8

What is energy?

Answer 8

Energy is the ability to do work or cause change.

Question 9

What is internal balance?

Answer 9

Internal balance refers to the maintenance of stable internal conditions in an organism.

Question 10

What is the difference between unicellular and multicellular?

Answer 10

Unicellular organisms have only 1 cell, while multicellular organisms consist of multiple cells.

Question 11

Give 2 examples of unicellular organisms.

Answer 11

Yeast and Bacteria.

Question 12

Give 1 example of a multicellular organism.

Answer 12

Humans.

Question 13

Name 5 living things needed to survive.

Answer 13

1. Food and water 2. Oxygen 3. Living space 4. Proper temperature 5. Energy.

Question 14

Explain food and water.

Answer 14

Food and water are sources of energy and are needed for growth, chemicals, and waste product removal.

Question 15

Explain oxygen.

Answer 15

Oxygen is needed for respiration, and it creates CO2, which plants use for photosynthesis.

Question 16

What is homeostasis?

Answer 16

Homeostasis is the ability of an organism to keep conditions inside its body stable even in the face of environmental changes.

Question 17

What is living space in terms of organisms?

Answer 17

Living space refers to the limited area where organisms live, and animals often defend their own territory.

Question 18

Name three things that food and water are used for.

Answer 18

1. Growth 2. Repairs of body parts 3. Water transports chemicals and waste products.

Question 19

What is the main source of energy for living things?

Answer 19

The sun.

Question 20

What do plants use for photosynthesis?

Answer 20

Plants use CO2, sunlight, and chlorophyll.

Question 21

What does multicellular mean?

Answer 21

Multicellular means having more than one cell.

Question 22

What does unicellular mean?

Answer 22

Unicellular means having only one cell.

Question 23

What does metabolism mean?

Answer 23

Getting energy by breaking down matter.

Question 24

What does Homeostasis mean?

Answer 24

It can maintain the body temperature regardless of the outside temperature.

Question 25

What does Heterotroph mean?

Answer 25

Can’t make its own food. Eats living things.

Question 26

What does interdependent mean?

Answer 26

When 2 things depend on each other.

Question 27

What is an organism?

Answer 27

A living thing.

Question 28

What does stimulus mean?

Answer 28

A change in environment.

Question 29

Will your heart rate increase or decrease after exercise?

Answer 29

It increases because 1. your muscle cells are working hard. 2. You use oxygen quickly/you reproduce more CO2 as a waste product. 3. When I ran, my heart rate went higher than when I was resting.

Question 30

What effect does fresh water have on the body?

Answer 30

Fresh water causes your cells to expand.

Question 31

What effect does salt water have on the body?

Answer 31

It makes your cells get smaller