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Gr 8 science > Cells and systems vocab > Flashcards

Cells and systems vocab Flashcards

memorization of basic terms

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Biology 101 flashcards
1
Q

What is a cell?

A

smallest unit that performs the functions of life

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2
Q

What is a cell membrane?

A

the cells’ “security guard”; allows certain substances into the cell

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3
Q

what is the nucleus?

A

the organelle that controls all of the cell’s activites

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4
Q

What is the cell wall?

A

a rigid structure that surrounds the cell

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5
Q

What is an organelle?

A

a structure inside the cell that has a specific function

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6
Q

What is the cytoplasm?

A

gel like substance that supports the cell from inside the membrane.

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7
Q

What is the vacuole?

A

a fluid-filled organelle that stores water, food, wastes, etc

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8
Q

What is a chloroplast?

A

organelle only in plants; contains chlorophyll and allows plants to make carbohydrates

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9
Q

What is an artery?

A

Blood vessel that carries oxygen-rich blood from the heart

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10
Q

What is a vein?

A

blood vessel that carries blood back to the heart

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11
Q

What is a semi-permeable membrane?

A

only allows certain materials to go through

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12
Q

What is villi? (s. villus)

A

tiny fingerlike projection on the inner lining of the small intestine

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13
Q

What is diffusion?

A

movement of particles in a liquid or gas from an area of high conc. to an area of low conc.

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14
Q

What is osmosis?

A

diffusion of a SOLVENT (usually water) through a selectively-permeable-membrane

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15
Q

What is a tissue?

A

group of cells that have the same function/structure

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16
Q

What is an organ?

A

group of different tissues that come together to perform a specific function

17
Q

What are the capillaries?

A

smallest blood vessel that CONNECTS arteries and vessels

18
Q

What is the alveoli?

A

tiny air sack in the lungs at the end of the bronchiole.

19
Q

what is a leaf?

A

primary photosynthetic organ of the plant

20
Q

what are the parts of a leaf? (1)

A
  1. blade
  2. cuticle
  3. petiole
  4. epidermis
  5. bundle sheath cells
  6. xylem and phloem
21
Q

what are the parts of a leaf? (2)

A
  1. mesophyll
  2. palisade layer
  3. spongey layer
  4. chloroplasts
  5. guard cells
  6. stomata

Gr 8 science (5 decks)

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