Evolution has led giraffes to have very long necks. Trees in the savannah have less leaves on bottom branches because of other animals. For the giraffe to survive, their necks slowly became longer as they could eat more leaves from upper/top branches. If they had not evolved longer necks, they would not exist today.
Oligonucleotide primers associate by hydrogen bonding to specific sections; primers are then extended.
Answer:
The correct answer is 3. peritrichous
Explanation:
Flagella is the surface structure found in bacteria that helps in the locomotion of the bacteria. There can be single flagella that can be located at one end of the bacteria or many flagella present on all over the cell surface of the bacteria.
If a bacteria contains only one flagella at one end it is called monotonous. If many flagella are present at one end then it is called lophotrichous. When both the end of bacterial cell contains an equal amount of flagella then the bacteria is amphitrichous.
Peritrichous are those bacteria which contains many flagella that are located all over the surface of their body, for example, E. coli is the bacteria present in human intestine having flagella distributed all over its surface.
Answer:
binding regulatory subunits and inducing their release from the catalytic subunits
Explanation:
cAMP molecules diffuse into the cytoplasm where they bind to an allosteric site on a regulatory subunit of a cAMP-dependent protein kinase ( protein kinase A, PKA).
-In its inactive form, PKA is a heterotetramer comprised of two subunits namely, regulatory (R) and two catalytic (C) subunits.
-The regulatory subunits normally inhibit the catalytic activity of the enzyme. cAMP binding causes the dissociation of the regulatory subunits, thereby releasing the active catalytic subunits of PKA.
-cAMP stimulates glucose mobilization by activating a protein kinase that adds a phosphate group onto a specific serine residue of the glycogen phosphorylase polypeptide.
Answer:false
Explanation:because there are a lot of ways that you can get energy.