Answer:
The answer is true.
Explanation:
PKU is an inherited metabolic disease caused by a mutation of the gene for an enzyme responsible for metabolism of the amino acid phenylalanine.
Answer:
through mitosis and DNA replication im pretty sure
Explanation:
The 4 types of organic compounds and their subdivisions within living organisms are:
1. Carbohydrates:
- Monosaccharides,
- Oligosaccharides,
- Polysaccharides.
2. Lipids:
- Fats,
- Phospholipids,
- Waxes,
- Sterols.
3. Proteins:
- Primary structure (amino acid sequence),
- The secondary structure,
- The tertiary structure,
- The quaternary structure.
4. Nucleic acids:
- DNA (deoxyribonucleic acid),
- RNA (ibonucleic acid).
An organism inherits one chromosome of a homologous pair from the maternal parent and the other chromosome from the paternal parent. Although both chromosomes possess the same genes and loci, they may feature different alleles, or versions, of those genes. For example, a maternally inherited chromosome in a pea plant may contain an allele that codes for a green pod, while the allele for a yellow pod may be found at the same location on the paternally inherited homologous chromosome. The differences between alleles of a gene are determined by deviations in their DNA sequences.
A diploid organism possesses two copies of each type of chromosome, with the potential exception of the sex chromosomes, in each of its cells. Humans, for example, have a total of 46 chromosomes in their cells. Human females have two copies of the sex chromosome called the X chromosome, so they have 23 sets of homologous chromosomes. Human males, however, possess one X sex chromosome and one Y sex chromosome, so they have 22 sets of homologous chromosomes, plus two sex chromosomes that are not homologous.
Answer: SKELETAL MUSCLE
Explanation:
Skeletal muscles is a type of muscle tissue that forms those muscles that move the bones of the skeleton,straited because straitations (strips) can be seen on microscopic examination and involuntary as it is under conscious control.
Although most skeletal muscles move bones,they also accomodate a degree of voluntary control in breathing.
A lot of movements can be finely coordinated.example; writing but may also be controlled subconsciously, maintaining an upright position does not normally require thoughts unless a new locomotor skill is being learned example skating or cycling and the diaphram maintains breathing while asleep.
The fibre (cells) of the skeletal muscle are cylindrical,contain several nuclei and can be up to 35cm long.
Skeletal muscle contraction is stimulated by motor nerve impulses originating in the brain or spinal cord and ending in the neuromuscular junction.
The contraction of a whole skeletal muscle occurs because of coordinated contraction of it's individual fibres.
