Answer:
Explanation:
A codon is a sequence of three bases found on the messenger RNA (mRNA) molecule which is translated to produce an amino acid. Each amino acid is coded by one or more specific codons. If the codon is changed through a mutation, the amino acid produced may be different. However, in this case, the other codons that produce Leucine are:
UUA, UUG, CUU, CUC, CUA and CUG
So the code CUU could mutate to CUC, CUA or CUG and leucine would still be produced.
mother and father
Answer: Using H as the allele,
Father - Hh or hh
Mother - Hh
Explanation:
Both parents must have at least one recessive gene to pass down to the hemophiliac woman. The mother does not have the disorder, so she must be heterozygous. No information is given on the father, but he must have passed down at least one recessive allele, so he cannot be homozygous dominant.
B. respiratory system
C. excretory system
D. circulatory system
A Insulation
B. Structural support
C. Provide energy
D. Control metabolic functions
Lipids accomplish many different functions, such as energy provision, structure, and insulation, among others. However, they are not in control of metabolic functions. Therefore the answer is D.
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Lipids are amphipathic molecules with hydrophilic heads -negatively charged phosphate group- and hydrophobic tails.
Lipids are involved in several functions. Among others, we can mention,
In the organism, lipids constitute the energetic reserve of late or differed use. These are in the triacylglycerol form. Their caloric content is very high and represents a significant source of energystorage.
Aerobic combustion of lipids produces a great metabolic water quantity. Some desertic animals -camels- store fat in their tissues to produce water when needed.
Some other animals produce a specialized adipous tissue called brown fat. Lipidic combustion in these tissues is decoupled from oxidative phosphorylation. Most of the energy derived from combustion is used for heat production.
Hybernating animals use this brown fat to produce energy during the long hibernation periods.
Two lipidic bilayers compose the cell membrane. They are arranged with their hydrophilic polar heads facing the exterior and the interior of the cells, while their hydrophobic tails are against each other, constituting the internal part of the membrane. They can also provide protection and isolation for specialized tissues and organs.
Lipids are involved in cell signals. They control the fluidity of membranes in the central and peripheral nervous systems, playing a role in electrical signals transmission and synapses.
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