Human And Social Biology Flashcards
Five characteristics of living things and what they do
- Excretion-getting rib of waste.
- Growth-increasing in size.
- Reproduction-the ability to reproduce.
- Sensitivity-detects changes in environment.
- Movement-changing positions.
What is the importance of locomotion?
Enables someone or something to move from one location to another.
Why is nutrition needed?
Reduce the risk of some diseases.
Which of the cell release energy during respiration?
Mitochondria.
The importance of cell specializes in humans.
Osmosis.
The process by which water enters the cells.
Define osmosis and diffusion.
Osmosis is the movement of water molecules from a solution with high concentration of water molecules to lower.
Diffusion is the movement of particles from where there are more to where there are less.
Similarity between plant and animal cells?
Ribosomes, Nucleolus, Mitochondrion, A membrane and cell membrane.
Meaning of photosynthesis?
When plants use sunlight, water and carbon dioxide to create oxygen and energy in the form of sugar.
Worded equation for photosynthesis.
Carbon dioxide + Water—> Glucose + Oxygen + Water.
The process of photosynthesis with both light and dark.
The light reaction is the stage of photosynthesis that traps light energy to produce ATP and NADPH
Dark reaction is the second step of photosynthesis that uses energy from ATP and NADPH to produce glucose.
Why is the nucleus refers as the brain of the cells?
It acts as the the brain by telling the cells what to do, how to grow and when the reproduce.
Two types of white blood cells?
Monocyte and basophil.
Define Herbivores, Carnivores and Omnivores
Herbivores are animals that eat plants.
Carnivores animals that only eat meat.
Omnivores animals that eat both plants and meats.
What percentage of the atmosphere is carbon dioxide?
0.03%
