Biochemistry
What is biochemistry?
Biochemistry is a science which deals with the over-all study of the chemical processes which occur in the living tissues at molecular level.
What is a nucleus?
The membrane enclosed organelle within a cell that contains the chromosomes.
What is a species?
Species is defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction.
What is Genetics
The scientific study of heredity
What is Bionary Fission?
A form of asexual reproduction in which one cell divides to form two identical cells.
What are the branches of Biochemistry?
Broadly, it is divided into Plant Biochemistry and Animal Biochemistry, but because of recent researches many new branches have emerged out such as molecular biology, neurobiology, cytochemistry, enzymology, nutrition chemistry, etc.
What can stem cells do?
Repair, restore, replace, and regenerate cells.
What is evolution?
The process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth.
What is Gene?
section of DNA that codes for a specific trait
a nonliving, infectious particle composed of a nucleic acid and a protein coat; it can invade and destroy a cell
Virus
What are polysaccharides?
A product formed by the condensation of large number of monosaccharide molecules is called a polysaccharide, e.g., starch, cellulose, and insulin.
What is DNA?
A self replicating material that is present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information.
___ is a trait or an organ that appears similar in two unrelated organisms
Analogous structures
What is Fertilization?
process in sexual reproduction in which male and female reproductive cells join to form a new cell
What is lytic cycle?
a method of viral replication that results in the destruction of a host cell and the release of many new virus particles
What constitute the group lipid?
Fats, oils, waxes and phospholipids form a large group called lipids.
Why does DNA mutate within the cells?
There are lots of mutagenic substances (like cigarette smoke and ultraviolet radiation) that increase the mutation rate.
Organism in its early stage of development
Embryo
What is Heterozygous?
Scientific term for having two different alleles for a trait
What is lysogenic cycle?
a method of viral replication in which a viral genome is replicated as a provirus without destroying the host cell; allows viruses to hide in their host cell for days, months, or years.
What is a biuret test?
In this test of proteins, equal amount of biuret reagent is added in 2-3 ml. of protein solution. After about 30 minutes violet colour is produced.
How long does it take for one cell to make a whole organism?
Cells will take between 5 and 6 hours to complete S phase. G2 is shorter, lasting only 3 to 4 hours in most cells.
A form of natural selection in which a single curve splits into two; occurs when individuals at the upper and lower ends of a distribution curve have higher fitness than individuals near the middle
Disruptive selection
For aliens the allele for a star antennae is dominant to the allele for no star. If a pure dominant alien is crosses with a hybrid alien, what would the genotypes of the offspring be?
SS and Ss
What is the structure of bacteria?
capsule, cell wall, cell membrane, cytoplasma, chromosome, pilus, flagellum, outer membrane/