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Science Exam 2014

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1.
1 point
A feature of the euglena that helps direct it to sunlight so that it can create food for itself through photosythesis
2.
1 point
A condition that interferes with the health of an organism
3.
1 point
- Found in both plant and animal cells
- Acts as a gatekeeper
- Controls the material coming and going into and out of the cell
4.
1 point
Cell membranes are selectively permeable which means that they will let some materials pass through easily, some materials pass through with help, and some materials do not pass through at all
5.
1 point
Tubes made of living cells that carry sugars from the leaves to the stem and roots for food and storage; can also transport nutrients up to the leaves
6.
1 point
As root cells pull in nutrients the water concentration in side the cells lowers, osmosis brings water into the cells, pressure builds and pushes water up the plant through the xylem vessels
7.
1 point
An organelle that breaks down large molecules within the cytoplasm and destroys damaged or worn-out cells
8.
1 point
Small organelles that are attached to endoplasmic reticulum and responsible for putting together proteins
9.
1 point
Small, hair-like structures that help bacteria to attach to each other and to surfaces and help bacteria to move
10.
1 point
The organelle that provides the cell with energy through a process known as respiration is known as the Mitochondria
11.
1 point
Large molecules that lock onto invading organisms and de-activate them
12.
1 point
Tiny structures within the cytoplasm that are specialized to carry out certain functions
13.
1 point
In plant cells this prevents it from bursting. It is when the water pressure in a plant cell that pushes cytoplasm against the non-living cell wall, causing the plant cell to stay rigid.
14.
1 point
- Found in plant cells
- Stores chlorophyll (energy from sun to make food)
15.
1 point
Straw-like tubes formed when plant cells die and leave cell walls behind; carry water and minerals to the leaves
16.
1 point
The plant cell structure that supports the plant cell
17.
1 point
Because water molecules are attracted to each other, something known as cohesion, they will pull each other up in a chain reaction through the plant when other water molecules evaporate
18.
1 point
Unicellular (one-celled) organisms that carry out all of life's functions and can only be seen with the help of a microscope; also known as microbes
19.
1 point
The fluid area of the cell where nutrients are absorbed, transported and processed, and wastes are stored and disposed
20.
1 point
The diffusion of water across a selectively permeable membrane is known as diffusion
21.
1 point
An organelle in which proteins are stored; some of these proteins are put into packages called vesicles which can be carried to the surface of the cell and released
22.
1 point
An individual living thing
23.
1 point
whip-like tail that helps bacteria move
24.
1 point
A vacuole that organisms like the paramecium and the amoeba that gathers excess water then contracts to expel it from the cell; helps prevent the cell from bursting
25.
1 point
Liquids cling to the sides of narrow tubes like the xylem vessels and helps the water to "crawl" up
26.
1 point
This is the movement of molecules form an area of high concentration to an area of lower concentration
27.
1 point
The parts of the cell that contain genetic information are called Chromosomes
28.
1 point
A series of canal-like folded membranes that helps to carry material through the cytoplasm; can be rough or smooth; rough ER has ribosomes attached
29.
1 point
Unicellular (one-celled) organisms that have a nucleus and contain mitochondria, ribosomes, and lysosomes; live in moist areas; may or may not contain chloroplasts
30.
1 point
A fluid - filled area in plants and animals that holds food and water
31.
1 point
The cell structure in plant and animal cells that acts as the control centre and directs all of the cells activities
32.
1 point
Unicellular (one-celled) organisms that have no nucleus, no mitochondria, and no ribosomes; most common form of microorganisms
33.
1 point
Small amounts of genetic material covered by a protein coat - contain no nucleus, cytoplasm, organelles, or cell membrane
34.
1 point
An organism composed of many cells
35.
1 point
- Finger like extension on the amoeba's cell membrane used to help move + gather food
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