What do plant cells have that animals cells do not? Animal cells have centrosomes (or a pair of centrioles), and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts, plasmodesmata, and plastids used for storage, and a large central vacuole, whereas animal cells do not. How a cell is like a […]
Which is the electron configuration for lithium 1s2?
Which is the electron configuration for lithium 1s2? Element Atomic number Electron configuration lithium 3 1s22s1 beryllium 4 1s22s2 boron 5 1s22s22p1 carbon 6 1s22s22p2 Which is the correct electron configuration for sodium Na? [Ne] 3s¹ What is the longhand configuration for silver? 1. The ground state electron configuration of ground state gaseous neutral silver […]
Why does the outer shape of our earth keep on changing?
Why does the outer shape of our earth keep on changing? The Earth’s shape changes because the climate events like El Nino shift where the mass of water is stored: in oceans, continents and the atmosphere. What are 4 processes that shape Earth’s surface? Explanation: The four common Planet Surface Processes are: Cratering, Volcanoes, Erosion, […]
Why does river discharge increase downstream?
Why does river discharge increase downstream? Changes Downstream As one moves along a stream in the downstream direction: Discharge increases, as noted above, because water is added to the stream from tributary streams and groundwater. As discharge increases, the width, depth, and average velocity of the stream increase. Why are river profiles concave? River profiles […]
What happens to potatoes when boiled?
What happens to potatoes when boiled? In contrast to oven baking, when potatoes are boiled the starch granules absorb not only the internal moisture but also some of the surrounding water. This causes the starch granules to rupture and spill their moist starchy contents, resulting in mashed potatoes that are wet and pasty. Should you […]
Is P and N directly proportional?
Is P and N directly proportional? Boyle’s law states that pressure (P) and volume (V) are inversely proportional. Gay-Lussac’s law states that pressure (P) and temperature (T) are directly proportional. Avagadro’s law states that the amount (n) of a substance is directly proportional to the volume (V). How do you solve for V in PV […]
What is the weakest carbon carbon bond?
What is the weakest carbon carbon bond? Alkyne What are the 4 main carbon stores? Carbon is stored on our planet in the following major sinks (1) as organic molecules in living and dead organisms found in the biosphere; (2) as the gas carbon dioxide in the atmosphere; (3) as organic matter in soils; (4) […]
What is simple harmonic motion write its any four characteristics?
What is simple harmonic motion write its any four characteristics? (i) In SHM, acceleration of the particle is directly proportional to its displacement, and directed towards the mean position. (ii) It can be represented by a single harmonic function of sine or cosine. (iii) Total energy of the particle executing SHM remains conserved. (iv) It […]
Which type of igneous rocks based on composition has the highest amount of silica content?
Which type of igneous rocks based on composition has the highest amount of silica content? Compilations of many rock analyses show that rhyolite and granite are felsic, with an average silica content of about 72 percent; syenite, diorite, and monzonite are intermediate, with an average silica content of 59 percent; gabbro and basalt are mafic, […]
What is an example of physical evidence?
What is an example of physical evidence? Examples of physical evidence include a document, a hair, fibers, fingerprints, soil, and blood. Class Characteristics are properties of physical evidence that can be associated only with a group and never with a single source. What are the classification of physical evidence? According to the general nature of […]