Biology Test 117

Serum albumin, often referred to simply as blood albumin, is an albumin found in vertebrate blood. Human serum albumin is encoded by the ALB gene. Other mammalian forms, such as bovine serum albumin, are chemically similar.

Bacteriophage Mu or phage Mu is a temperate bacteriophage, a type of virus that infects bacteria. It has an icosahedral head, a contractile tail and 6 tail fibres. It uses DNA-based transposition to integrate its genome into the genome of the host cell that it is infecting. It contains double-stranded DNA.

The common name, spirulina, refers to the dried biomass of A. platensis, which belongs to photosynthetic bacteria that cover the groups Cyanobacteria(BGA) and Prochlorophyta. Scientifically, a distinction exists between spirulina and the genus Arthrospira.

Physiological dormancy inhibits embryo growth and seed germination until chemical changes take place. It is an endogenous dormancy.

Monosomy is the loss of one chromosome from a set. Therefore, there are 45 chromosomes in each cell of the body instead of the usual 46.  A number of human conditions occur due to monosomy, such as Turner syndrome, Cri du chat syndrome, 1p36 deletion syndrome, etc.

The test cross, invented by Mendel, is a deliberate genetic cross between an individual of unknown genotype (homozygous dominant or heterozygous) for a dominant phenotype, and a homozygous recessive individual. Deliberate genetic crosses are not possible in studying human inheritance. They would be both immoral and unethical, and the waiting time for results would be too long. Patterns of inheritance in humans are studied retrospectively, by constructing family pedigrees, as was illustrated in problems 1, 4, 5, and 10 of this problem set

Sepia has an internal shell.

In sickle cell anaemia due to point mutation, the sixth amino acid, glutamic acid in beta chain of haemoglobin is replaced by valine. Sickle cell anaemia results in an abnormality in the oxygen-carrying protein haemoglobin found in red blood cells.

Sickle cell disease occurs when a person inherits two abnormal copies of the haemoglobin gene, one from each parent.

Gross productivity is the amount of energy trapped in organic matter during a specified interval in produces. Net productivity is the amount of energy trapped in organic matter during a specified interval at a given trophic level, that is less than gross productivity due to the energy lost by the respiration of the organisms at that level

So, the correct answer is 'Gross production (GP)

Ethylene is widely used in the ripening of fruits.It is also responsible for the changes in texture, softening, color, and other processes involved in ripening.