Page 37 answers

 

 

science pages 33-37

 

                                            sierra merrick

 

 

1) Q.  Why is a living thing a system?

 

    A.   Your body responds to differrent varibles in different ways.

 

 

2) Q.   Name three varibles that effect a living system?

 

    A.   Oxygen,water and temperature are just three varibles that effect a living system.

 

 

3) Q.   What is a cell?

 

 

    A.   The basic unit of structure and function in living things.

 

 

4) Q. What is a multicellular organism? Name three examples.

 

 

    A. Organisms that are made of more than one cell. Humans, different body parts and organ systems.

 

 

 

5) Q.  Identify each picture either as a molecule, cell, a tissue or an organ.

 

 

    A.  A=Organ because the picture is of a persons arm muscle. B=Organ, because it looks like a lung. C=Tissue because it is small and it it is probably in a group of a lot of other cells to make a cell. D=Cell because it kind of looks like a nerve cell and it is all connected together. 

 

 

 

6) Q.  Explain why each of the following scenarios is a good example of homeostasis? What is the varible(s) involved? What is the response?

 

    A.  a=This scenario`s varibles are how fast her heart is beating and how much she is breathing. Since she is breathing harder her heart is beating faster and that is pumping air through her lungs faster which is increasing her breath rate. this is a good example of homeostasis because it is showing how running is affecting Sonja.

         b=The varibles are Roberto`s stomach. He was hungry and that made his stomach hungry and it began to growl. This is an example of homeostasis because it is probably around lunch time so the time of day is effecting him.

         c=Sweat is the varible in this scenario. Since dogs do not have sweat glands they get cool by keeping their mouths open so cool air go into there body. The temperature is effecting the dog because it is making him hot.       

 

 

    

 

 

 

 

Erin:

 

1. A living thing is a system because it has organs, cells, and molecules that make up the system.
2. One variable that can affect a living system is temperature another is oxygen and finally there’s food.
3. A cell is the smallest part in the body. The basic unit of a living system.
4. A multicultural organism is living system with more than one cell. Examples: human, bear, fish.
5. A- Is an organ because it helps the system. B- Organ because it is part of a system. B-organ because it is a working part of the system. C- A cell because it is the smallest part of the organ. D- A molecule because it makes up a cell.
6. A- The variable is her heart rate and breathing this helps her keep her air coming in normal. B- His stomach is the variable this helps him digest food. C- This variable is the tongue and it helps the dog cool down.

 

Sara M.

 

1. Because it’s organized to use matter and energy to move.

2. Temperature, food, and oxygen

3. A cell is the basic unit of a living system.

4. It’s a living thing made of 1 of more cells.

·         Humans

·         Fish

·         Dogs

5. A is a tissue because its larger then a cell or molecule and I know it’s not an organ. B is an organ because it’s a group of tissue. C is a cell because it’s small. D is a molecule because it’s a basic unit of matter.

6.

      a. The variable is running. The response is heart rate and breathing increasing.

b. The variable is hunger and the response is growling stomach.

c. The variable is the dog has no sweat glands and the response is the dog panting.

 

Carson:

1) A living thing is a system because it is made up of organs, cells, and molecules.

 

 

2.) Teperature, food and water

 

3.)A cell is a basic unit of a living thing.

 

4.) A multicellular organism is one that is made of more than 1 cell. An Elephant, a porcupine, and a frog

 

5.)

a) A tissue because of the may cells that are working together

b)An organ because of the different tissues in the picture

c)A cell becuase it is a single dot

d)A molecule because of the dots being conected.

 

6.)

a) The variable is the speed and energy use difference.The response is the heart rate and breathing increase.

b) The variable is  Robertos stomach, and the response is the growling.

c)The variable is sweat glands, and the response is the panting when there hot.