1st semester test review 2004-05

First Semester Review  2004-05    

 

What are the smallest units that can carry on life functions called?

Living things are composed of ______________.

Give an example of a scientific observation.

What is a hypothesis?

What 3 things compose an atom?

Matter is made of ________________.

When atoms gain energy, what happens to electrons?

Do  cells contain a few or thousands of different kinds of enzymes?

__________________ reactions are important in organisms because they allow the passage of energy from one molecule to another.

What is a polar molecule?

Water molecules break up other polar substances. Give an example of such a polar molecule.

What happens to ionic compounds in water?

Which is not a carbohydrate —– glycogen, steroids, cellulose, or sugars?

Amino acids are the monomers for making ________________.

Is ice an example of an organic molecule?

The type & order of the amino acids determines the ___________ of a protein.

Very active cells need more of which organelle?

What organelle is the packaging & distribution center of the cell?

What membrane surrounds the nucleus?

What is the function of mitochondria. Sketch their shape.

Where is chlorophyll found in plants?

Diffusion takes place from ________________ concentration to ___________.

If a cell has a high water content, will it lose or gain water?

Ink dispersing in a beaker is an example of ________________.

Very large molecules enter cells by a process called ________________.

Endocytosis and exocytosis occur in ______________ directions across a cell membrane.

What is photosynthesis?

Where do the dark reactions of photosynthesis take place?

When chlorophyll absorbs light energy ATP is made and what other energy carrying molecule?

When chlorophyll absorbs light energy, what happens to its electrons?

_______________ molecules are responsible for the photosystems.

Electrons that have absorbed energy & moved to a higher energy level enter what chain?

When cells break down food molecules, energy is temporarily stored in what molecule?

When muscles do not get enough oxygen, what acid forms during exercise?

If you are growing bacteria in a culture and lactic acids starts to form, the bacteria are not getting enough of what gas?

The 2 stages of cellular respiration are _____________ & oxidative respiration.

Citric acid forms in which cycle during cellular respiration?

ATP molecules are formed inside what cellular organelle?

What is the study of life called?