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PHSL > Life Processes > Flashcards

Life Processes Flashcards

1
Q

What are the 3 parts of a atom?

A

Protons(+), Neurons(0) & Electrons(-)

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2
Q

Why are electrons so important?

A

Electrons = electricity = controls nervous system

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3
Q

What is an ion ?

A

Is a charged version of an atom

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4
Q

How does an atom become an ion?

A

An atom needs to give away an electron (-) to become stable, this makes it a positively charged ion

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5
Q

What is an ionic bond?

A

Exchanged electrons

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6
Q

What is a covalent bond?

A

Shared electrons

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7
Q

What do cells used nutrients for?

A
  • Build and repair cellular structures
  • Builds products for export
  • Create ATP
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8
Q

What are the 3 energy systems that are used to create ATP?

A

Fatty acids, Glucose, & Amino acids

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9
Q

What is concentration gradient?

A

The concentration of particles is higher in one area and lower in another

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10
Q

What is a electrical gradient?

A

When charged particles move towards the opposite charge (opposites attract)

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11
Q

What is diffusion?

A

A movement of high concentration to low concentration (

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12
Q

What is osmosis?

A

Diffusion of water across a membrane

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13
Q

What is osmolarity?

A

A mesure of solute concentration

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14
Q

What is active transport?

A

Move substances against their gradient

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15
Q

What are the major structures within a cell?

A
  • cell membrane
  • cytoplasm
  • cytopskeleton
  • Nucleus
  • ER
  • Golgi apparatus
  • Mitochia
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16
Q

What is the function of the nucleus ?

A

Has DNA to make proteins

17
Q

What is the function of the ER?

A

Where proteins are first created

18
Q

What is the function of the Mitochondria ?

A

Its the power house, Makes ATP

19
Q

What is the function of the Golgi Apparatus?

A

modifies proteins, re packages into vesicles to export out of cell

20
Q

What is blood made out of?

A

Plasma (water, proteins, nutrients, hormones), White blood cells, Red blood cells

21
Q

What proportion of blood is fluid and or solid?

A

55% fluid 45% solid

22
Q

What is the main function of the blood?

A
  • Maintains body temp
  • transport stuff around body
  • Maintains ions and nutrient balance
  • injury repair
  • immunity
23
Q

What is bulk transport?

A

Bulk transport helps nutrients and oxygen get around the body quickly and to the cells

24
Q

What is homeostasis?

A

The bodys processes involved in maintaining a balanced internal environment (HOMEO - same, STASIS - stay)

25
Q

What is set point ?

A

The physiological value around which the operating range
fluctuates.

26
Q

What is Operating range?

A

also called the ‘normal range’, is the restricted set of
controlled variable values needed for healthy cell
functioning.

27
Q

What are two types of systems the body uses to maintain homeostasis ?

A

Feed forward and negative feedback

PHSL (9 decks)

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