Which of the following describes how infectious agents in the environment would most likely affect one’s personal health? a. exposure would first cause a cell-mediated immune response from the body. b. infectious agents would trigger nonspecific external defenses such as sweat, saliva, and mucus. c. exposure would weaken the body’s immune system and leave it unable to fight future infections. d. infectious agents would invade the body and leave it unable to produce antibodies.

Consider the skeleton. which skeletal system is represented by the shaded portion of the skeleton? spongy skeleton compact skeleton axial skeleton appendicular skeleton

The empty trna moves off and picks up another matching amino acid from the cytoplasm in the cell. the anticodon of the trna, with its attached amino acid, pairs to the codon of the mrna, which is attached to a ribosome. this sequence is repeated until the ribosome reaches a stop codon on the mrna, which signals the end of protein synthesis. the ribosome forms a peptide bond between the amino acids, and an amino acid chain begins to form. when a second trna with its specific amino acid pairs to the next codon in sequence, the attached amino acid breaks from the first trna and is bonded to the amino acid of the second trna.

When the cell concentrates potassium within, against the natural tendency of matter, it is performing a. passive diffusion b. facilitated diffusion c. active transport d. pinocytosis