The lac operon is an operon required for the transport and metabolism of lactose in E.coli. When lactose is introduced to the increased medium, the lac genes are expressed due to the fact allolactose binds to the Lac repressor protein and maintains it from binding to the lac operator. Allolactose is an isomer of lactose. Small quantities of allolactose are shaped when lactose enters into E. coli. allolactose binds to the repressor protein and reasons the conformational change. As a result of this, the repressor can no longer bind to the operator area and falls off. RNA polymerase can then bind to the promoter and transcribe the lac genes. After some time, when the level of lactose decreases as it is metabolized using enzymes, it causes the synthesis of the repressor from the regulator gene. This repressor binds to the operator gene and prevents RNA polymerase from transcribing the operon and the transcription is stopped. This type of law is acknowledged as negative regulation.
Allolactose is a disaccharide comparable to lactose. It consists of the monosaccharides D-galactose and D-glucose linked thru a β1-6 glycosidic linkage alternatively of the β1-4 linkage of lactose. It may additionally occur from the occasional transglycosylation of lactose through β-galactosidase.
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1.) D- phloem is Bi-directional and can flow upward or downward
2.) C- it transports the water from the roots to the stems and leaves
3.) A- capillary action <span>is the ability of a liquid to flow in narrow spaces without the assistance of, or even in opposition to, external forces like gravity, so it can flow upward through the tissue
4.) B- It conducts the sugar and other metabolic materials downward from the leaves
5.) A- </span><span>The roots </span>have a type of cell called a root hair cell - these project out from the root into the soil. The water<span> absorbed by the root hair cells passes through the plant in xylem tubes, and eventually reaches the </span>leaves<span>.
6.) A- It transports </span> water<span> from roots to shoot and leaves, but it also transports some </span>nutrients. It is Uni-directional though and can only flow upward.
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Answer:
- <u>Huesos:</u> HUMERO, COSTILLAS, TIBIA, CUBITO, VERTEBRAS, CLAVICULA, ROTULA, FEMUR, OMOPLATOS, FALANGES.
- <u>Músculos: </u>DELTOIDES, BICEPS, ADUCTOR, PECTORAL, GEMELOS, DORSAL, CUADRICEPS, IZQUIOTIBIAL, CORAZON, ABDOMINAL.
- <u>Articulaciones: </u>CODO, MUÑECA, CADERA, TOBILLO, HOMBRO, CRANEO.
Explanation:
Los huesos son órganos que tienen la función de dar estructura, protección y soporte al cuerpo. A los huesos se le unen los músculos, los cuales hacen que los huesos se muevan al contraerse estos. Las articulaciones unen los huesos entre sí y permiten junto con los músculos el movimiento del cuerpo y de sus diferentes partes.
4 because the bat wings got 4 sides so that means that they only got 4 bones same as a human
HOMEOSTASIS AND METABOLISM.
