biology 9
🇬🇧
In Inglés
In Inglés
Practique preguntas conocidas
Manténgase al día con sus preguntas pendientes
Completa 5 preguntas para habilitar la práctica
Exámenes
Examen: pon a prueba tus habilidades
Pon a prueba tus habilidades en el modo de examen
Aprenda nuevas preguntas
Modos dinámicos
InteligenteMezcla inteligente de todos los modos
PersonalizadoUtilice la configuración para ponderar los modos dinámicos
Modo manual [beta]
El propietario del curso no ha habilitado el modo manual
Modos específicos
Aprende con fichas
Completa la oración
Escuchar y deletrearOrtografía: escribe lo que escuchas
elección múltipleModo de elección múltiple
Expresión oralResponde con voz
Expresión oral y comprensión auditivaPractica la pronunciación
EscrituraModo de solo escritura
biology 9 - Marcador
biology 9 - Detalles
Niveles:
Preguntas:
36 preguntas
🇬🇧 | 🇬🇧 |
Enzymes | Allow chemical reactions to happen in the body quickly |
Hormones | Act as messengers to tell other cells what to do (glucose/insulin) |
All cells contain | DNA genes and stem cells |
Multiple cells make | Tissue |
Lots of tissue makes | Organs |
MRNA | Carries a copy of the DNA gene to the ribosome |
TRNA | Carries amino acid to the ribosome |
Mutation | Any change in the sequence of DNA of an individual organism |
Mutagen | Any substance or factor that can cause mutations |
What substances cause mutations | Radiation and chemicals |
What are the three types of mutations | Addition, deletion, substitution |
What is deletion | When a base pair is missing from the sequence |
What is addition | When one or more base pairs are added to the DNA |
What is substitution | When a base pairs spot changes with another base pair |
What are the possible effects of mutation | Positive, negative, neutral |
Postive mutation | Beneficial to the individual |
Negative mutation | Harmful to individual |
Neutral mutation | No effect of the individual |
What are chromosomes | One strand of DNA tightly packed together |
DNA | Double helix, blueprint for all cells |
Genes | One side of a DNA strand contains instructions to make specific proteins |
What is a base | Either Adenine, cytosine, guanine, thymine |
What bases go together | A and T / G and C |
What is a nucleotide | Base, phosphate molecule and sugar molecule |
What is the base attached to | Sugar molecule |
Step 1 | Nucleus receives chemical signal to make specific protien |
Step 2 | DNA message for small protein copied and turned into RNA |
Step 3 | RNA leaves through nuclear pore |
Step 4 | RNA message delivered to ribosome / protein made |
Step 5 | The made protein enters the E.R |
Step 6 | Vesicle carries protein to Golgi body |
Step 7 | The Golgi body packages protein for transport out of cell |
Step 8 | Vesicle carries protein to cell membrane |
Step 9 | Protein released from cell |
Gene therapy | Replace mutated part with healthy DNA (may effect patience immune system) |