Answer:
<h2>
A. mRNA ( messenger RNA),B. rRNA (ribosomal RNA) and C. tRNA (transfer RNA )</h2>
Explanation:
A. mRNA ( messenger RNA);
i)it is the most abundant form of RNA
,
ii) specifies the amino acid sequence for a protein
,
iii) contains exons.
B. rRNA (ribosomal RNA);
i) it is assembled in the nucleolus
,
ii) is a component of ribosomes
.
C. tRNA (transfer RNA );
i) contains anticodon,
ii) has amino acids covalently attached
.
Less prey means less predatoors
Answer:
evolution of bidepadlism,
increase in enamel thickness,
regular use of stone tools, enlargement of brain to around 1,450 cc
Explanation:
Sponges are.... well.... just...... absorbent.
Hydrophilic
A phospholipid is comprised of a phosphate hydrophilic head, which means that it is "water-loving," and a fatty acid hydrophobic tail, which is "water-hating." The head and the tail are joined together by a glycerol molecule.
The phosphate head is attracted to water because it is charged (i.e. negatively). Water is a polar molecule, which means that there is an uneven distribution of charges within its molecular structure with the oxygen side being "more negative" than the rest of the atom (which is "more positive" near the hydrogen). Thus, the negatively-charged nature of the phosphate head and the parts of the water molecule which are positively charged enable the two to form an "attraction" towards one another.
On the other hand, the hydrophobic tail is nonpolar, which means that it does not have a "more positive" or "more negative" side or part in its molecular structure. These differences in structure with water make the hydrophobic tail unattracted to water molecules and more attracted to other uncharged, nonpolar molecules (such as fats and oils).
