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Biology > Multicellular Organisms pt1 > Flashcards

Multicellular Organisms pt1 Flashcards

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AP® Biology flashcards Biology 101 flashcards
1
Q

How are cells replaced

A

Existing cells divide

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2
Q

What is mitosis

A

The division of the nucleus

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3
Q

What are stem cells

A

Unspecialised cells that can divide to self renew or become different types of specialised cells

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4
Q

What are the different types of stem cells

A

Embryonic stem cells and adult tissue stem cells

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5
Q

Embryonic stem cells are found in…

A

Blastocysts( very early embryos)

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6
Q

Adult tissue stem cells are found in….

A

Some organs and mucles and bone marrow

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7
Q

Tissues are

A

Cells of the same type cell that have the same job organised into groups e.g muscles

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8
Q

Organs are…

A

Several different types of tissue together

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9
Q

Organ systems are…

A

A group of organs that do a particular job e.g digestive system

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10
Q

Nerves carry messages through…

A

Nerve impulses from the sense organs to the CNS then from there to muscles or glands

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11
Q

Parts of the brain are….

A

The skull, the cerebrum, the medulla, the spinal cord and the cerebellum

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12
Q

Cerebrum

A

Concious thought, memory and reasoning

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13
Q

Cerebellum

A

Balance and muscular coordination

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14
Q

Medulla

A

Controls heart and breathing rate

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15
Q

What are the three different types of cells

A

Sensory neurons, inter neurons and motor neurons

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16
Q

The sensory neurons…

A

Carry impulses from sense organs to CNS

17
Q

The inter neurons…

A

Carry impulses from the sensory neurons to the motor neurons

18
Q

The motor neurons…

A

Carry eletrical impulses from the CNS to the mucles or glands

19
Q

What is a synapse

A

A synapse occurs between neurons

20
Q

What is the endocrine system

A

It influences almost every cell and organ. In general it controls body processes that happen slowly such as cell growth

21
Q

What are the main parts of the endocrine system

A

Glands, organs and hormones

22
Q

What transfers messages between neurons and synapses

A

Chemicals

23
Q

Glands release what into the bloodstream

A

Hormones

24
Q

What are hormones

A

Chemical messengers e.g ADH

25
Q

Why can only specific tissues be affected by specific hormones?

A

Because target tissues have receptors for the hormones

Biology (15 decks)

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