Answer:
D. Sperm Cells
Explanation:
Primary sexual characteristics in organisms are defined as the external or internal genital parts present in organisms from birth only and Secondary sexual characteristics are the characteristics that found after puberty.
Primary Sexual Characteristics Of Males are testes, scrotum and penis which helps in the delivery of sperm cells. Testes, scrotum and penis are all present in humans or males from birth.
Hence, the correct answer is "D. Sperm Cells".
Answer:
to preserve its stability.
to avoid cross contamination.
Explanation:
Biological evidence refers to all biological materials such as hair, tissue, bones, teeth, blood or other bodily fluids etc. These biological materials are collected from the site of crime. These evidences helps in finding the criminals. These biological evidences has to be kept at safe place in order to avoid contamination and preserve its stability so it can be used for solving the problem.
The front of the eye has an adjustable hole in it called the pupil, covered by a spherical “window” known as the cornea. Light passes through these structures to the lens, a (normally) transparent focusing device controlled by muscles and ligaments. The focused light shines through the fluid-filled interior of the eye to the retina at the back of the eye. The retina contains specialized cells(rods and cones) that react to brightness, darkness and color frequencies, sending this information through the optic nerve to the brain for visual processing...remember that never impulses control the blinking of eye not the release of hormones.
It is important because you need to increase your heart rate by being more active because it will help you build your strength
Answer:
(Iv) A small ribosomal subunit binds with mRNA
i) The anticodon of tRNA base pairs with the mRNA codon at the A site
ii) Peptide bond formation between amino group of amino acid in A site and the carboxyl end of the polypeptide in the P site
(III) Translocation of tRNA from the A site to the P site
Explanation:
Translation is the second process involved in the same of protein. It occurs in the ribosome. Translation begins when the ribosome attaches itself to the mRNA molecule in the cytoplasm using small ribosomal subunits. This allows the tRNA (transfer RNA) to bind to the start codon of the mRNA for translation to be initiated.
The tRNA uses its anticodon, which is complementary to the mRNA codon, to bind to the mRNA coding in the A-site of the RIBOSOME. The tRNA then carries the amino acid that corresponds the codon it reads. This leaves the mRNA codon exposed in the other site of the ribosome, which is bind to by another tRNA anticodon.
The tRNA then carries another amino acid that corresponds the codon it reads in the other site. After this, the first tRNA transfers its amino acid to the amino acid in the newly arrived tRNA which forms a peptide bond between the amino group of amino acid in A site and the carboxyl end of the polypeptide in the P site.
After this peptide bond formation, the ribosome uses a ratcheting mechanism to advance the mRNA, three nucleotides at a time. The ribosome also shifts the tRNA carrying the polypeptide chain into its recently vacated site (P site). This process is called TRANSLOCATION.