Answer.Nucleotides Have Characteristic Bases and Pentose. Nucleotides have three characteristic components: (1) a nitrogenous base, (2) a pentose, and (3) a phosphate (Fig. ... The nitrogenous bases are derivatives of two parent compounds, pyrimidine and purine (Fig. 12-lb).
Answer:
The forest, maybe the atmosphereExplanation:
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Answer:
A. Their bodies tend to take in too much water.
Explanation:
Osmoregulation is the maintenance of osmotic concentration inside the body cells and in the extracellular fluid by controlling the amount of water and salts. Organisms living in water can be divided into two groups: Some are osmoconformers which change the osmolarity of body fluids with respect to the surrounding medium. Some are osmoregulators which do not allow change in internal osmolarity and try to maintain it by various means.
If as osmoregulator is placed in fresh water environment then their body is hypertonic to their environment. Osmosis will occur which is the movement of water from low solute to high solute concentration. Thus the problems faced by such organisms would be:
- Entry of excess water
- Loss of body salts to outside.
Adaptations in such organisms would be:
- Body cover such as scales or adipose covers
- They do not drink more water
- Excess water is eliminated as dilute urine
- Special cells called ionocytes or chloride cells help in active uptake of sodium ions and chloride ions.
Southern White-faced Owls feed on large insects, spiders, scorpions, small birds, reptiles and small mammals. This owl hunts from a perch, dropping down and gliding low over the ground before swooping up to a new perch. Prey are normally taken from the ground or from branches, held with the powerful talons and torn apart with the bill.