science questions
What is "Homeostasis?
give an example
maintaining an internal balance
You sweating when its hot is your body trying to stay cool and around 98.6 degrees
What is "Excretion of waste?"
When an organism disposes of waste materials.
What is the smallest unit of life?
cell
true or false: Bacteria are multi-cellular organisms?
why or why not?
false, bacteria are single celled organisms
Is a rock dead?
why or why not
for something to be dead it had to have been alive at some point. A rock was never alive.
What is "Reproduction?"
A species producing another offspring
How do we indirectly get energy from the sun?
If so, how?
Plants use sunlight to make their own food through photosynthesis. Then, we eat the plants or we eat animals that ate the plants. So, the energy from the sun goes into plants, then into us through the food we eat
What is the powerhouse of the cell?
Mitochondria
What was Mr. Medlins favorite movie/movies
Avengers
What is photosynthesis?
why is it so important(name a few reasons)?
Photosynthesis is the way plants make their own food using sunlight
It gives us oxygen to breathe.
Plants make oxygen during photosynthesis, and we need it to stay alive!
It gives plants food to grow.
Plants can't eat like animals do, so they make their own food.
It starts the food chain.
Animals (and people) eat plants, or eat animals that eat plants — so all food starts with plants!
It helps keep the air clean.
Plants take in carbon dioxide, which helps the Earth stay healthy.
What is "Gas Exchange?"
This is not the same as breathing. The process by which humans take in oxygen and release carbon dioxide is called breathing, but for fish, it is referred to as gas exchange.
True or false: the amount of cells you had as a baby is the same number of cells you have right now
False, the older and bigger you get, the more cells you make
Are atoms in everything or only in living things?
everything
True or false: living things possess 8 characteristics
why or why not?
false, because they have to possess all 9 characteristics
If the environment is not suitable, an organism will not survive. Some organisms form protective spores, or capsules to survive unfavorable times. These spores do not appear to be living. They are __________. When suitable circumstances exist, they suddenly start to exhibit the characteristics of life. They were always living, but now you can tell.
dormant
What is "Use of Energy?"
Give an example
All living things need energy from food or sunlight to live and grow
Plants use sunlight to make food; animals eat plants or other animals for energy
In growth and development Growth means to _______ while development means ________
Give an example
Growth means an increase in size, while development refers to learning new abilities
________ allows a plant to grow towards the sunlight?
Adaptation
Students from an elementary science club are exploring a nature trail behind their school. Along the trail, they plan to collect specimens from the grassy area and nearby pond.
leaf
soil
water
insect
rock
The teacher asks the students how they can determine which specimens are living and which are nonliving. Which statements from the students will best help the class identify the living and nonliving specimens?
Select the TWO correct answers.
A
All of the specimens are living because they are all part of the same ecosystem.
B
A microscope can be used to show how only living specimens contain cells.
C
Only the living specimens can be seen using a microscope.
D
Nonliving specimens will not show signs of growth and development over time.
B: A microscope can be used to show how only living specimens contain cells.
D: Nonliving specimens will not show signs of growth and development over time.
Explain how the terms “energy” and “waste” have a connection in the human body.
When we eat food, our body breaks it down to get energy. This energy helps us do everything like running, thinking, breathing, and even sleeping! But while our body is making energy from food, it also makes waste — the parts of food and chemicals we don’t need.
What is "Organization?"
give an example using an animal or plant cell
living things have specialized structures with specialized functions
The cell is made up of different parts(such as:the nucleus, mitocondria, lysomes, ect.) those special structures have special functions that help the organization(the cell) function
What is "Response to Stimuli?"
Give an example
Living things adjust and respond to changes in their internal and external environments.
Internal Changes (Inside body):
Feeling hungry
Being thirsty
External Changes (Outside world):
Temperature
Light
Sound
Name all 9 of the characteristics
Homeostasis
Organization
Made of Cells
Energy Use
Excretion of Waste
Gas Exchange
Response to Stimuli
Reproduction
Growth and Development
Which of the following are characteristics of living things?
movement
gas exchange
breathing
Energy Use
eating
made of cells
D: Energy Use
Bonus question
what is something a plant cell has that a human cell does not have?
Hint: it helps with food
chloroplasts, which are green parts that help make food using sunlight (through photosynthesis)