University:
High School
Course:
High School Biology
Academic year:

2019
Views:

94

Pages:

6
Author:

oe5icvq

/ Topic 1: Living Things Organization of livlng thlngs: Cells are the smallest units of life. ц,�!; ·:•,:•;;_;:::: Organelles are the structures inslde the cell. Nucleus- Contains DNA (genetic information) that controls the production of proteins Ribosomes- Read the message sent from DNA and places АА in the correct order to form а protein. (order of Ад determines SHAPE and Function ofthe protein) Mitochondria- Site of Cellular Aeroblc Respiration; makes АТР other metabolic actlvltles needed to stay alive Vacuoles-Store food (food vacuoles) or wastes Cytoplasm-fluid (mostly water) where many chemical reactions take place. \ ! Diffusion- molecules move from а high concentration to а low concentration with no energy required. Osmosls is the diffusion of water. Example) А cell has 95% water on the inside and 90% water on the outslde. Water will move out of the cell (high to low). __1. Which structures could most likely Ье observed in cells in the low-power field " of а compound light microscope? �ell walls and chloroplasts 'i2, ribosomes and chromosomes (3) vacuoles and oxygen (4) carbon dloxide and mitochondrla __8. The dlagrem below represents а cell. D А i. __2. Which organelles must Ье present wlthin а cell of а geranium leaf for respiration and P.hotosynthesls to ••• occur? cell wall and cytoplasm mitochondrion and chloroplast cell membrane and nucleus (4) vacuole and ribosome __3. ln the dlagram of а cell below, the structure labeled Х enaЫes the cell to (3) control cell actlvltles J.lLrelease eriergy �tore waste products (4) manufacture proteins с Whlch statement concerning АТР and actlvity within the cell is correct? (1) The absorption of АТР occurs at structure А. he synthesls of АТР occurs withln structure В. ТР is produced most efficlently Ьу structure С. he template for АТР is found in structure D. __9. Th�.diagrem below represents two cells, Xand У. А __4. lf the rlbosomes of а cell were destroyed, what effect would this most likely have оп the cell? (1) lt would stimulate mltotlc cell divislon. azn:;rhe cell would Ье unaЬle to synthesize proteins. (3) Development of abnormal hereditary features would occur in the cell. (4) lncreased proteln absorptlon would occur through the cell membrane. __5. Which structures carry out llfe functions withln cells? �rganelles (1) tissues organs (2) organ systems 't4J __6. Certain poisons are toxic to organisms because they interfere with the function of enzymes in _mitochondrla. Thls results directly in the inaЫlity of the cellto ( 1) store lnformatlon .ill,_build proteins �elease energy from nutrients (4) dispose of metabolic wastes __7. Which sequence shows ajecreasing level of complexity? ( 1) organs ➔organlsm ➔cells ➔ tissues (2) organism ➔ cells ➔organs ➔ tissues �cells ➔ tissues ➔ organs ➔ organism �rganism ➔organs ➔ tissues ➔cells • Cell Х CellY Which statement is correct concerning the structure �edA? � aids ln the removal of metabolic wastes in both . cell Х and cell У. (2) lt is lnvolved ln cell communlcation in cell Х, but not in cell У. (3) lt prevents the absorption of СO2 in cell Х and 02 in cell У. (4) lt represents the cell wall in cell Х and the cell membrane in cell У.