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IB Bio > Cells & Cell Theory > Flashcards

Cells & Cell Theory Flashcards

1
Q

Define cell theory

A
  • all living things are made out of cells
  • all living things are composed of cells
  • the cell is the smallest unit of life
  • cells only arise from pre-existing cells (mitosis + meiosis)
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2
Q

Paramecium characteristics of life: cell structure

A

It’s a single celled eukaryote

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3
Q

Paramecium characteristics of life:energy and matter

A
  1. Waste products from digestion are excreted from anal pore, exchanges matter with the environment
  2. Eats smaller unicellular organism in order to obtain energy and matter
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4
Q

Paramecium characteristics of life: reproduction

A
  1. The cell will grow until it reaches maximum capacity and at that point it will divide
  2. The cell divides via mitosis to make another nuclei before the cell reproduces asexually
    (Two paramecium can fuse together before reproduction)
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5
Q

Paramecium characteristics of life: Response

A

It can control the beating of cilia to love in different directions in response to changes in the environment

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6
Q

Paramecium characteristics of life: Homeostasis

A

It will contain water in contractive vacuoles which will expel the water

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7
Q

Chlamydomonas characteristics of life: made of cells

A

Eukaryotic- single celled organism

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8
Q

Paramecium characteristics of life: response

A

Has a sensitive eyespot the allies the organism chladyomonas to sense light and swim using its flagella

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9
Q

Paramecium characteristics of life: exchange energy and matter

A
  1. Chladyomonas is an autotroph uses photosynthesis to obtain energy and matter
  2. The oxygen from photosynthesis diffuses through the cell membrane
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10
Q

Paramecium characteristics of life: maintenance of homeostasis

A

It will collect the excess water and store it in a contractile vacuole which will expel the water

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11
Q

Paramecium characteristics of life:reproduce

A
  1. The cell is able to duplicate

2. The nucleus of the cell divides via mitosis

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IB Bio (2 decks)

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