Answer:
Explanation:
Wave generators harness the power of breaking waves which are disturbances that transmits energy to produce electric power for homes and industries.
This energy source is choice by many because it is environmentally friendly.
Here are some of the disadvantages;
- Threats to marine ecosystem especially those organisms that resides on the continental shelf where most these generators are installed.
- It can pose serious damage to the beach natural outlook as energy waves can be periodically discharged.
- Disruption of ships and vessels that might dock near the beach.
- Noise pollution generated by the plant is undesirable.
- The seasonality of waves might cause fluctuations in power generation.
Two different types of succession—primary and secondary—have been distinguished. Primary succession occurs in essentially lifeless areas—regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier.
Answer:
D) with the phosphodiester backbone and with bases via the minor groove
Explanation:
The double helix is a fairly rigid and viscous molecule of immense length and a small diameter. In this molecule a major groove and a minor groove can be observed.
The major groove is deep and wide, the minor groove is shallow and narrow.
DNA-protein interactions are essential processes in cell life (activation or repression of transcription, DNA replication and repair).
Proteins bind to the inner part of the DNA grooves, through specific junctions: hydrogen bonds, and non-specific junctions: van der Waals interactions, and other general electrostatic interactions.
The proteins recognize donors and acceptors of hydrogen bonds, methyl groups (hydrophobic), the latter exclusive of the major groove; There are four possible patterns of recognition in the major groove, and only two in the minor groove (see figures).
Some proteins bind to DNA through the major groove, some others through the minor groove, and some need to bind to both, but the nucleosome form hydrogen bonds via the minor groove with the phophodiester backbone.
The answer would be (B) because the pair of Guanine is Cytosine and the pair of Adenine is Uracil (It is paired with Thymine in DNA).
