Answer:
The correct answer will be option- permits complementary base pairing
Explanation:
DNA contains four types of nitrogenous bases which pair with one another, identified by Erwin Chargaff.
Chargaff suggested that adenine binds thymine forming two hydrogen bonds and cytosine binds guanine forming three hydrogen bonds.
This base pairing between the complementary groups is known as a complementary base pairing which plays an important role in DNA.
The complementary base pairing allows the formation of the helical structure of DNA, the base pairs to be arranged in most energetically and favourable way and replication and transcription processes.
Thus, permits complementary base pairing is the correct answer.
Answer:
1) Wax belong to lipids.
2) <u>Animals</u>: Water and cold isolation and protection from pathogenic microorganisms.
<u>Plants</u>: It controls evaporation and maintains hydration.
Explanation:
1) Wax belong to the biomolecules of lipids.
2) In animals, such as birds, the uropygial gland secrets sebum or wax, spreading it throughout the animal's feathers to prevent water from penetrating as it serves as an isolating compound for animals that live in cold areas. It also provides protection from bacteria and fungi. In coloquial terms, it would be like a water-proof coat that protects them from water and extreme climate.
In plants, the secretion of wax through the cuticle has been developed as an adaptation to control evaporation and maintain hydration.
<h3><u>Answer</u>;</h3>
Key
A sorting device that is useful in classifying by observation is a <u>key</u>.
<h3><u>Explanation</u>;</h3>
- <em><u>Classification key or taxonomic key is a device that is used by scientists to identify unknown organisms. </u></em>
- They are constructed so that the user gets a series of choices about the characteristics of the unknown organisms.Thus, by making the correct choice at each step, one is led to the identity of the specimen.
- Therefore<u><em>, keys can be used to identify a living organism or determine which group it belongs to</em></u> by answering questions on the key about characteristics of living things.
In the cannon bard theory of emotion, the thalamus send simultaneous messages to the cortex and autonomic nervous system. The cannon bard theory state that we feel emotion and experience physiological reaction such as sweating, trembling and muscle tension simultaneously. Emotion and bodily change do not share a cause and effect relationship rather they occur simultaneously following stimulating event.
I believe the answer is D. don't take my word for it though I may be wrong
