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PAS Biologi > Metabolisme > Flashcards

Metabolisme Flashcards

1
Q

Apa itu metabolisme?

A

Keseluruhan proses perubahan reaksi biokimia yg berlangsung di dlm tubuh/bagian tubuh makhluk hidup

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2
Q

Apa itu anabolisme?

A

Proses penyusunan senyawa kimia sederhana menjadi senyawa kimia/molekul kompleks.
MEMERLUKAN ENERGI

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3
Q

Apa itu katabolisme?

A

Proses pemecahan/penguraian senyawa kompleks menjadi senyawa lbh sederhana.
MEMBEBASKAN ENERGI

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4
Q

Apa saja fungsi dari enzim?

A
  • Mempercepat reaksi kimia dgn menurunkan energi aktivasi/energi utk memulai reaksi kimia.
  • Mempercepat reaksi biologi tanpa mengalami perubahan struktur kimia. (BIOKATALISATOR)
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5
Q

Apa saja macam enzim yang ada?

A
  1. Enzim sederhana
  2. Enzim konjugasi/holoenzim
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6
Q

Apa saja sifat2 enzim?

A
  1. Merupakan suatu protein
  2. Biokatalisator
  3. Mempercepat reaksi dgn menurunkan energi aktivasi
  4. Bekerja spesifik (1 enzim bekerja pd 1 substrat)
  5. Bekerja bolak-balik
  6. Tdk tahan pada suhu tinggi & inaktif pd suhu rendah
  7. Inhibitor dpt menghambat kerja enzim
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7
Q

Struktur enzim terdiri dari 2 hal yaitu…

A
  1. Apoenzim
  2. Gugus Prostetik
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8
Q

Apa itu apoenzim?

A

Protein bersifat termolabil

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9
Q

Apa itu gugus prostetik?

A
  1. Koenzim = gugus organik yg pd umumnya merupakan vitamin
  2. Kofaktor = gugus organik yg biasanya berupa ion2 logam
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10
Q

Apa saja jenis inhibitor enzim?

A
  1. Inhibitor kompetitif
  2. Inhibitor non-kompetitif
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11
Q

Apa itu inhibitor kompetitif?

A

Inhibitor dgn struktur mirip dgn substrat

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12
Q

Apa itu inhibitor non-kompetitif?

A

Inhibitor yg mengubah sisi aktif enzim sehingga tidak berikatan dgn substrat

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13
Q

Apa itu teori LOCK AND KEY?

A

Substrat memiliki bentuk yg sesuai dgn situs aktif

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14
Q

Apa itu teori INDUCED FIT?

A

Substrat tidak selalu memiliki bentuk sesuai dgn situs aktif. Jd, substrat menginduksi situs aktif dr enzim

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15
Q

Apa saja faktor yg mempengaruhi kerja enzim?

A
  1. Suhu
  2. Perubahan pH
  3. Konsentrasi
  4. Inhibitor
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16
Q

Apa itu respirasi AEROB?

A

Proses pernapasan yg membutuhkan oksigen

17
Q

Apa itu respirasi ANAEROB (fermentasi)?

A

Proses pernapasan yg tidak memerlukan oksigen, menghasilkan energi lebih sedikit dibandingkan aerob

PAS Biologi (5 decks)

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