The scientist is studying cohesion, a property of water that makes water molecules attract to one another.
Meteor showers occur<span> when the earth in its </span>orbit<span> around the Sun </span>passes through<span>debris left </span>over<span> from the disintegration of </span>comets<span>. Although the earth's </span>orbit<span> around the Sun is almost circular, most </span>comets<span> travel in </span>orbits<span> that are highly elongated ellipses.</span>
The correct sequence is DNA to RNA to Protein. This is in fact a summary of the central dogma of molecular genetics.
DNA, found in the nucleus of the (eukaryotic) cell, is the store of all hereditary information in the cell and this is basically information on all types of proteins of the body. In the nucleus, information for a particular protein is copied (transcribed ) from DNA and onto messenger RNA (mRNA).
mRNA then leaves the nucleus enters the cell cytoplasm where it attaches to a ribosome. Transfer RNA (tRNA) reads (translates) the information on the attached mRNA and brings up amino acids corresponding to the information. The amino acids are linked together in the ribosome into a chain which forms the primary structure of proteins.
Answer:
D
Explanation:
Geothermal energy utilizes the natural heat of underneath rocks to heat water to steam. The steam is then used to turn turbines and generate electricity. The water is usually recycled by being injected back to the ground to make sustainable use of the water. However, this process of injecting water in the ground may contaminate the groundwater in aquifers. The water can, therefore, be unsuitable for human use such as watering of plants and animals including household use.
Sperm release <u>hyaluronidase</u> to break down the bonds between adjacent follicle cells surrounding the oocyte.
- In mammalian fertilization, the sperm cell's acrosome releases hyaluronidase after reaching the oocyte, breaking down hyaluronan in the corona radiata to enable conception.
- Sperm hyaluronidase has been linked to sperm penetration of the cumulus oophorus' extracellular matrix and may be extremely important for gamete contact and mammalian reproduction.
- The hyaluronidase enzymes on the surface of the sperm help it break through this covering when a capacitated sperm reaches the ovum.
- When this happens, the sperm might connect to the zona pellucida. Hyaluronidase breaks the egg's vitelline membrane as part of its function.
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