As each codon arrives at the active site of a ribosome, it attracts another molecule containing the anticodon. This molecule is called
The set of three nucleotides on the mRNA strand that are read by the ribosome is termed the _______.
The leading strand is built continuously, and the lagging strand is built in pieces.
Which statement best describes strand characteristics as it relates to DNA replication?
During DNA replication, which nucleotide will bind to an A nucleotide in the original or parental DNA strand?
The two strands of original or parental DNA are separated during DNA replication.
Because the two strands of original or parental DNA run in opposite directions, the new strands must be made in different ways.
DNA polymerase III builds a new strand by adding DNA nucleotides one at a time.
The lagging strand is made of a series of fragments that must be joined together to make a continuous strand.
When a double helix of DNA is replicated, two complete helices are formed. Together, these helices are called sister __________.
Which structure is described as a raised region on the centromere, where the spindle fibers attach to the chromatids?
replication, transcription, translation
The duplication of DNA is called ________, the copying of DNA to mRNA is called ________, and the reading of the mRNA by the cell to make a protein is called ________ .
Amino acids are transferred to the ribosome to be incorporated into a growing polypeptide chain by ________.
Its DNA must be replicated exactly so that identical copies of the cell's genes can be passed on to each of its offspring.
What must happen before a body cell can divide?
The RNA responsible for bringing the amino acids to the "factory" site for protein formation is ________.
multiple enzymes; three types of RNA
Specific proteins are manufactured through the interaction of ________ and ________.
edited to remove introns and transported into the cytoplasm.
Before the mRNA transcribed from a gene can be used to translate into a protein, it must be
The molecule that brings the proper amino acid into place at the ribosome for the elongation of a new protein is called
triplet, codon, anticodon
The unit of DNA that specifies a certain amino acid is called a ________, the same unit of mRNA is called a ________ which, during protein synthesis, is matched by the ________ of tRNA.
3, 1, 6, 2, 5, 4
Put the following steps of protein synthesis in correct order of occurrence:
1. mRNA is produced in nucleus
2. ribosome moves along mRNA
3. DNA uncoils for transcription
4. polypeptide is produced
5. tRNA brings amino acids to ribosome
6. mRNA moves to ribosome
indicates the sequence of amino acids in a protein molecule
A gene is a set of specific instructions that
epiphysis, secondary ossification site
Migration of osteoblasts into the ___________ creates the __________.
primary ossification center
Migration of blood vessels into the central region of the cartilage bone model, starting bone development, occurs at which site?
Heather has been feeling sick lately with a stuffy nose and thick, yellowish mucus. She thinks she has a cold as she's been coughing and feeling tired and achy in the upper jaw and teeth. The over-the-counter medicines she's been taking to relieve such symptoms are not helping at all though. In fact, she has recently developed a terrible headache. Feeling helpless, she made an appointment with her family physician. After learning Heather's history of symptoms and examining her face thoroughly, the physician asked if her headache worsened with light exposure or loud noises. Heather responded "No." What was the physician's likely diagnosis?
Craig has always led a healthy lifestyle, and has played football for many years through high school and college. Having suffered many injuries to the face from his athletic activities, he now often experiences headaches and chronic inflammation and congestion of the paranasal sinuses. Based on the given information, which is most likely the primary cause of Craig's chronic condition?
Bonnie suffers from severe osteoporosis. For many years, she has ignored her deficiency and has not adjusted her diet or lifestyle. As a result, her thoracic curvature has become exaggerated posteriorly. What vertebral column distortion is exhibited?
A very active 40-year-old man became ill and inactive for several months. As a result, he became depressed and gained 75 pounds. He now complains of severe back pain and associated musculoskeletal issues, and he exhibits an enlarged abdomen that protrudes abnormally. Which vertebral column distortion has he developed?
What is the name of the prominent elevation that runs along the center of the posterior surface of the femur?