NEW BOOK Chapter 1 lessons 1-3 Flashcards Preview

Science 7th grade > NEW BOOK Chapter 1 lessons 1-3 > Flashcards

Flashcards in NEW BOOK Chapter 1 lessons 1-3 Deck (19)
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1
Q

the smallest unit that can perform all life processes.

A

cell

2
Q

a phospholipid layer that covers a cell’s surface; acts as a barrier between the inside of a cell and the cell’s enviornment

A

cell membrane

3
Q

one of the small bodies in a cell’s cytoplasm that are specialized to perform a specific function

A

organelle

4
Q

in a eukarotic cell, a membrane-bound that contains the cell’s DNA and that has a role in processes such as growth, metabolism, and reproduction.

A

nucleus

5
Q

an organism that consists of a single cell that does not have a nucleus

A

prokaryote

6
Q

an organism made up of cells that have a nucleus enclosed by a membrane; eukaryotes include animals, plants , and fungi, but not archaebacteria or eubacteria

A

eukaryotes

7
Q

a rigid structure that surrounds the cell membrane and provides support to the cell

A

cell wall

8
Q

cell organelle composed of RNA and protein; the site of protein sysnthesis

A

ribosome

9
Q

a system of membranes that is found in a cell’s cytoplasm and that assists in the production, processing, and transport of proteins and in the production of lipids

A

endoplasmic reticulum

10
Q

in eukarotic cells, the cell organelle that is surrounded by two cell organelle that is surrounded by two membranes and that is the site of cellular respiration

A

mitochondrion

11
Q

cell organelle that helps make and package meterials to be transported out of the cell

A

golgi complex

12
Q

a small cavity or sac that contains materials in eukaryotic cell

A

vesicle

13
Q

a cell organelle that contains digestive enzymes

A

lysosome

14
Q

a group of similar cells that perform a common function

A

tissue

15
Q

a collection of tissues that carry out a specialized function of the body

A

organ

16
Q

a group of organs that work together to perform body functions

A

organ system

17
Q

a living thing; anything that can carry out life processes independantly

A

organism

18
Q

the arrangement of parts in an organism

A

stucture

19
Q

the special, normal, or proper activity of an organ or part.

A

function