Vacuoles in plant cells aid in preserving the equilibrium of water. A single vacuole may occasionally occupy the majority of a plant cell's inner volume.
Water and other cellular components are stored in the enormous, membrane-bound organelles known as central vacuoles, which are present in plant cells.
Pressure is applied to the surrounding cell components and the cell wall by a central vacuole that is filled with fluid.
The central vacuole has a variety of functions in plant cells, including storing salts, minerals, nutrients, proteins, and pigments, promoting plant development, and contributing significantly to the structure of the plant.
Therefore, central vacuole play an important role in plant cells.
Learn more about central vacuole here:
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Word Bank:
Initial observation, hypothesis, experiment, observation and analysis of data, Interpretation, final hypothesis supported.
1. The researchers sampled all the plots throughout the growing season. They measured growth rates, and they analyzed the chemical composition of living leaves.
2.The researchers inferred that something limits grass growth in some places. It could be any environmental factor- temperature, sunlight, water or nutrients. Based on their knowledge of salt marshes, they proposed an idea: Marsh grass growth is limited by available nitrogen.
3. Data analysis confirmed that marsh grasses in experimental plots with additional nitrogen grew taller and larger than the controls.
4. Researchers observed that marsh grass grows taller in some places than in others. This observation led to a question: Why do marsh grasses grow to different heights in different places?
5. The researchers selected similar plots of marsh grass. All plots had similar plant density, soil type, input of fresh water, and height above average tide level. The plots were divided into control and experimental groups.
6. The researchers complied all of the data. They compared the average growth rate in each plot and the average height of the plants.
1. Observation and Analysis of Data
2. Hypothesis
3. Final Hypothesis Supported
4. Initial Observation
5. Experiment
6. Interpretation
The box of information can be classified according to stages of scientific methodology as Observation and Analysis of Data, Hypothesis, Interpretation, Initial Observation, Experiment, and Final Hypothesis Support.
Here's how each part of the experiment corresponds to stages of the scientific methodology:
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Answer:
Explanation:
{Auto-self, troph-food}
An autotroph is an organism that is able to produce its own food, which are usually complex organic substances from simple inorganic substances.
Unlike heterotrophs, they are not dependent on other organisms for their source of energy.
In the flow of energy in an ecosystem, they are commonly referred to as producers because other organisms, mostly animals are dependent on them for energy. This autotrophic ability is a characteristics of most plants, green algae and photosynthetic bacteria.
Autotrophs are in two category viz;
1. Photoautotrophs; which use light as a source of energy to power the synthesis of organic substances in a process called photosynthesis. These organisms possess pigments that makes them capable to capture the photons of light. Examples are green plants, green algae etc.
2. Chemoautotrophs, which use chemical inorganic compounds e.g Hydrogen sulfide, ammonia etc. as a source of energy to synthesize their food. Examples include archaebacteria
transform into a sugar that causes a reaction in a substrate.
bind to a substrate and cause a reaction in the substrate.,
stimulate other molecules to become substrates.
Answer:
bind to a substrate and cause a reaction in the substrate.,
Enzymes, which are sensitive to their environment, can become denatured and lose their functional shape if temperatures are too high. This prevents them from binding to and initiating a reaction in the substrate.
Enzymes are extremely sensitive to their environment, including conditions like temperature and pH. If the environment of an enzyme becomes too hot, it can cause the enzyme to denature, or lose its functional shape. This distorts the active site of the enzyme, which is the region where the substrate, or molecule the enzyme acts upon, binds. Consequently, a denatured enzyme cannot perform its core function, which is to bind to a substrate and cause a reaction in the substrate. If the enzyme cannot bind to the substrate, it cannot catalyze the reaction. Therefore, extreme heat can inhibit the functioning of enzymes.
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b. Dorsal hollow nerve cord
c. Spinal column
d. Notochord
8. In order for the exchange of oxygen and carbon dioxide to occur, an animal’s respiratory surfaces must remain
a. cold c. hot
b. dry d. moist
9. A bird’s instinct to fly south for the winter is an example of which type of behavior
a. Learned behavior
b. Habituation
c. Observant conditioning
d. Innate behavior
10. Echinoderms are most closely related to chordates because both are
a. Protostomes
b. Deuterostomes
c. Endotherms
d. Ectotherms
11. What advantage do forward facing eyes provide primates
a. The ability to form extended social groups
b. The ability to judge the distance of branches
c. The ability to manipulate tools
d. The ability to find mates easier
12. What type of symmetry does the animal in the figure display
a. Asymmetrical c. radial
b. Bilateral d. multi-symmetry
13. The ability for animals to reproduce on land was primarily due to
a. Lungs c. 4 limbs
b. Endothermy d. amniotic eggs
14. Cephalization allows animals to
a. Gain information about their environment
b. Escape from predators
c. Attract mates
d. Increases the production of offspring
15. Termites can often be found with protists in their gut. The protists aid in the digestion of cellulose, which is found in the wood termites eat. What type of relationship is this
a. Parasite c. mutualism
b. Commensalism d. cohabitation
16. Which is true about gas exchange in respiratory systems
a. Gases diffuse from areas of low concentration to areas of high concentration
b. Gases diffuse from areas of high concentration to areas of low concentration
c. Gases diffuse equally in most situations
d. Concentration has no effect on gas diffusion
17. When you use your knowledge and experience to figure out an error message on your computer, you are using
a. Classical conditioning c. innate behavior
b. Insight learning d. trial-and error learning
18. Which of the following types of cells produce a muscle contraction
a. Sensory neuron
b. Interneuron
c. Motor neuron
d. All neurons can stimulate muscle contraction
19. What is the function of the excretory system
a. To supply cells with oxygen and nutrients
b. To rid the body of metabolic wastes
c. The exchange oxygen and carbon dioxide with the environment
d. To break down food
20. Examining the teeth of an animal can give you information about whether it
a. Practices intracellular or extracellular digestion
b. Is a filter feeder or a detritivore
c. Is a nutritional symbiont
d. Is a herbivore or carnivore