Life systems.
Plant and Animal Cells
Fluids
Review.
Water systems.
100
What are living cells?
Living cells are the basic units of life, capable of growth, metabolism, response to stimuli, and reproduction, and they maintain a stable internal environment while being highly organized structures.
100
What are the composition of plant cells?
- Cell Wall
- Cell Membrane
- Cytoplasm
- Nucleus
- Mitochondria
- Ribosomes
- Endoplasmic Reticulum (Rough and Smooth)
- Golgi Apparatus
- Lysosomes
- Cytoskeleton
- Chloroplasts
- Central Vacuole
- Plasmodesmata
- Peroxisomes
100
What is a fluid?
A fluid is a substance that can flow and take the shape of its container. Examples include liquids like water and gases like air.
100
What are the three kinds of matter, and which one is the stiffest?
solid, liquid, gas, the stiffest is solid
100
What is the water cycle, and how does it work?
The water cycle is the continuous movement of water between the atmosphere, land, and oceans. It includes processes like evaporation, condensation, precipitation, and runoff.
200
What do living cells do?
Living cells carry out essential functions such as growth, energy conversion (metabolism), responding to environmental changes, maintaining internal balance (homeostasis), and reproducing to produce new cells.
200
The composition of animal cells is
- Cell Membrane
- Cytoplasm
- Nucleus
- Mitochondria
- Ribosomes
- Endoplasmic Reticulum (Rough and Smooth)
- Golgi Apparatus
- Lysosomes
- Cytoskeleton
- Centrioles
- Peroxisomes
- Cilia and Flagella (in some animal cells)
- Vesicles
200
What is the difference between a liquid and a gas?
Liquids have a definite volume but take the shape of their container, while gases expand to fill their entire container and have neither definite shape nor volume.
200
does sand have a viscosity?
of course not
200
How does pollution affect the quality of water in rivers and lakes?
Pollution from sources like industrial waste, agricultural runoff, and sewage can contaminate water bodies, leading to decreased water quality, harm to aquatic life, and health risks for humans.
300
If living cells are gone, what will happen?
If living cells were to disappear, all forms of life would cease to exist, leading to the collapse of ecosystems, the end of food chains, and the breakdown of processes essential for the Earth's biosphere, ultimately rendering the planet lifeless.
300
What are the primary structural differences between plant and animal cells?
Cell wall, Chloroplasts, Vacuoles.
300
How does temperature affect the behavior of fluids?
Increasing the temperature of a fluid typically causes its particles to move faster, resulting in expansion for gases and changes in viscosity (thickness) for liquids.
300
What has a higher density than rock or clay?
is the rock
300
What is groundwater, and how is it important for human use?
Groundwater is water stored beneath the Earth's surface in soil and rock layers. It is crucial for human use as a source of drinking water, irrigation, and industrial purposes.
400
Tell me about the composition of living cells.
- Cell Membrane
- Cytoplasm
- Nucleus
- Mitochondria
- Ribosomes
- Endoplasmic Reticulum
- Golgi Apparatus
- Lysosomes
- Cytoskeleton
- Chloroplasts
- Vacuoles
400
How do the functions of chloroplasts in plant cells differ from the functions of mitochondria in both plant and animal cells?
Chloroplasts in plant cells perform photosynthesis to convert light energy into glucose, while mitochondria in both plant and animal cells generate ATP through cellular respiration to provide energy for cellular processes.
400
What is viscosity, and how does it affect the flow of fluids?
Viscosity is a measure of a fluid's resistance to flow. Fluids with high viscosity flow more slowly, like honey, while fluids with low viscosity flow more easily, like water.
400
What is viscosity?
Viscosity is a measure of a fluid's resistance to flow. It describes how easily a fluid flows, with higher viscosity indicating thicker fluids that flow more slowly, and lower viscosity indicating thinner fluids that flow more easily.
400
Explain the importance of wetlands in water systems.
Wetlands act as natural filters, purifying water by trapping pollutants and sediments. They also serve as habitats for diverse wildlife and help prevent floods by absorbing excess water during heavy rainfall.
500
What happens if any of the living cells disappear?
If any living cells disappear, it can lead to tissue and organ failure, disrupt biological processes, and ultimately result in the death of the organism.
500
Why do animal cells lack a cell wall, and how does this absence affect their shape and ability to interact with their environment compared to plant cells?
Animal cells lack a cell wall to allow for greater flexibility and mobility, enabling them to adopt various shapes and perform functions like movement and communication. This absence contrasts with plant cells, which have rigid cell walls providing structural support but limiting flexibility and mobility.
500
How do fluids exert pressure, and what are some real-world examples of this?
Fluids exert pressure equally in all directions. This is demonstrated by hydraulic systems (like car brakes) and by the way water pressure increases with depth in oceans and swimming pools.
500
How does temperature affect the viscosity of a fluid?
Generally, as temperature increases, the viscosity of a fluid decreases. This is because higher temperatures cause the molecules in the fluid to move more quickly, resulting in reduced friction between them and thus lower resistance to flow. Conversely, lower temperatures increase viscosity as molecules move more slowly and experience greater friction.
500
How do humans impact water resources, and what are some ways to conserve water?
Humans impact water resources through activities like over-extraction, pollution, and habitat destruction. Conservation methods include reducing water waste, implementing water-saving technologies, and protecting natural water sources.