Animal cells have plasma membrane while plant cells have
cell wall and cell membrane.
A plant cell has 1 large vacuole while an animal cell has
more than 1 vacuole which is smaller compared to the vacuoles of a plant cell.
The vacuole of a plant cell is hypertonic because it takes up to 90% of the
cells volume.
A plant cell has chlorophyll or chloroplasts (which gives
colors to plants), animal cells does not have chloroplasts.
Cell division is also called mitosis (this term is used for
both animal and plant cells, no difference on that). For plant cells,
centrifugal division occurs, its starts in the middle going outwards creating
the cell plate. For animal cells, division is centripetal that it comes from
the outside going toward the center and that is called the cleavage furrow.
True.
Shivering is a bodily function in response to cold in warm blooded animals/human. When the core body temperature drops shivering reflex is triggered to maintain homeostasis. Skeletal muscles begin to shake in small movements creating warmth by expending energy.
Theories explain phenomena, whilst laws are generalizations which characterize them.
Answer:
1. Define a Question to Investigate
As scientists conduct their research, they make observations and collect data. The observations and data often lead them to ask why something is the way it is. Scientists pursue answers to these questions in order to continue with their research. Once scientists have a good question to investigate, they begin to think of ways to answer it.
2. Make Predictions
Based on their research and observations, scientists will often come up with a hypothesis. A hypothesis is a possible answer to a question. It is based on: their own observations, existing theories, and information they gather from other sources. Scientists use their hypothesis to make a prediction, a testable statement that describes what they think the outcome of an investigation will be.
3. Gather Data
Evidence is needed to test the prediction. There are several strategies for collecting evidence, or data. Scientists can gather their data by observing the natural world, performing an experiment in a laboratory, or by running a model. Scientists decide what strategy to use, often combining strategies. Then they plan a procedure and gather their data. They make sure the procedure can be repeated, so that other scientists can evaluate their findings.
4. Analyze the Data
Scientists organize their data in tables, graphs, or diagrams. If possible, they include relevant data from other sources. They look for patterns that show connections between important variables in the hypothesis they are testing.
5. Draw Conclusions
Based on whether or not their prediction came true, scientists can then decide whether the evidence clearly supports or does not support the hypothesis. If the results are not clear, they must rethink their procedure. If the results are clear, scientists write up their fi ndings and results to share with others. The conclusions they draw usually lead to new questions to pursue.
