Biology Section 61: The Structure Of Dna & 62: Dna To Protein

Molecules – Chemical substances made of two or more atoms that are bonded together by covalent bonds. H20, O2, CO2, H2, N2, etc, are naturally occurring examples. Compare with ions, which are NOT held together by covalent bonds.
500. Parts of Blastocyst: – Thicker mass of cells becomes embryo.
Rest of blastocyst develops into membranes that surround, nourish and protect the embryo
When individuals near the center of the curve have higher fitness than individuals at either end of the curve. Natural selection works with this norm. – Stablizing selection
endotoxin – A poisonous component of the outer membrane of gram-negative bacteria that is released only when the bacteria die.
What is the genotype of a man who is heterozygous for being able to taste (PTC), IF the ability for a person to taste is a dominant trait (T) and the inability to taste PTC is recessive (t)? – There is one of each allele and the genotype would be Tt
Photosynthetic organisms capture energy from sunlight with… – pigments.
Conclusion – The logical interpretation of the results of a test or experiment – In science, it expresses either support or rejection of the hypothesis.
What part of the eye focusses light onto the retina? – The lens
Which of the following lists examples of body structures in order starting with the most simple and ending with the most complex?
What term describes the interference of gene expression by another gene? – epistasis
tetrad – A pair of chromosomes form tetrads made up of four chromatids.
cytoplasm – gel-like fluid between the cell membrane and the nucleus
metamorphosis – Developmental process in which an organism goes through abrupt, distinct changes in form.
410. What is a Homeobox? – A DNA sequence of homeodomains
Microtubules – The largest of the three cytoskeletal proteins, composed of the protein tubulin (long thin, hollow tubes), found just inside the cell membrane.
Which оf the fоllоwing lists exаmples of body structures in order stаrting with┬áthe most simple аnd ending with the most complex?
pollen – A powder like substance that contains the male gamete in flowering or coniferous plants.
Codon – Each three-nucleotide sequence in mRNA that encodes an amino acid or signifies a start or stop signal is called this.

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