Life Science First Semester Review

The basic SI unit for length is the:
1. meter
2. liter
3. gram
4. inch
Which is the greatest length?
1. 1.5 cm
2. 1.5 mm
3. 1.5 m
4. 1.5 km
An object's ____ is measured as g/mL.
1. mass
2. density
3. area
4. volume
In an experiment, a ______ is kept the same.
1. variable
2. control
3. constant
4. data
Which organelle is Number 6 in the diagram of a cell below?
1. nucleus
2. cytoplasm
3. vacoule
4. cell membrane
SI units are based on multiples of ___.
1. 1
2. 10
3. 100
4. 1000
A factor changed by the experimenter:
1. Independent variables
2. Dependent variables
3. Data
4. Control
Your teacher hands out a copy of a laboratory experiment. What is the first thing you should do to conduct your experiment safely?
1. Mix materials with those of another group to save time.
2. Begin heating any materials that will need to be hot.
3. Obtain and open any materials needed in the experiment.
4. Read every step of the procedure to make sure you understand it.
Which of the following is NOT a characteristic that all living things share?
1. Living space
2. Movement
3. Cellular organization
4. Use energy
Which is the most abundant chemical found in living cells?
1. Carbohydrates
2. Nucleic Acids
3. Proteins
4. Water
Which of the following do all living things need to survive?
1. Sunlight
2. Oxygen
3. Carbon dioxide
4. Water
What does the formula below represent?
1. fermentaion
2. oxidation
3. photosynthesis
4. respiration
A plant growing toward light is an example of:
1. reproduction
2. development
3. a response
4. a stimulus
An organism's ability to maintain stable internal conditions is called:
1. adaptation
2. homeostasis
3. diffusion
4. cytokinesis
Which of the following statements is part of the cell theory?
1. Only plants are composed of cells.
2. Cells can be produced from nonliving matter.
3. All cells are produced from other cells.
4. Cells are one of several basic units of structure and function in living things.
The invention of the microscope made it possible for people to discover and learn about:
1. skin
2. cells
3. animals
4. plants
What is the total magnification of a microscope with two lenses when one lens has a magnification of 15 and the other has a magnification of 30?
1. 15
2. 30
3. 45
4. 450
Plants get energy from:
1. water
2. sunlight
3. leaves
4. oxygen
The ability of a microscope to distinguish fine details is called:
1. magnification
2. bending
3. resolution
4. enlarging
Which organelles produce most of the energy needed by the cell?
1. chloroplasts
2. ribosomes
3. vacoules
4. mitochondria
Enzymes are proteins that:
1. protect and support the cell
2. trap energy from the sun
3. break down food
4. speed up reactions in living things
Which organelle in a plant cell traps energy from the sun?
1. mitochondria
2. cell wall
3. chromatin
4. chloroplast
Which organelles release chemicals that break down large food particles into smaller ones?
1. Endoplasmic reticulum
2. Lysosome
3. Vacoule
4. Golgi Body
Which organelle stores food, water, and waste in the cell?
1. Endoplasmic reticulum
2. Golgi body
3. Mitiochondria
4. Vacuoles
Which term refers to the movement of materials through a cell membrane when energy is required?
1. Passive transport
2. Active transport
3. Diffusion
4. Osmosis
Which term refers to the movement of molecules from an area of high concentration to an area of lower concentration?
1. Collision
2. Confusion
3. Diffusion
4. Difraction
Which term refers to the movement of water molecules through a selectively permeable membrane?
1. Osmosis
2. Diffusion
3. Active transport
4. Passive transport
What are the products of photosynthesis?
1. Water and sugars
2. Carbon dioxide and water
3. Oxygen and water
4. Oxygen and sugars
Tiny openings on the underside of leaves that allow gases to enter and leave the leaf are called:
1. Stomata
2. Pores
3. Guard cells
4. Lipids
What happens during photosynthesis?
1. The cell uses energy in sunlight to make carbon dioxide.
2. The cell used oxygen to make glucose.
3. The cell uses energy in sunlight to make food.
4. The cell uses oxygen to make food.
The product(s) of cellular respiration is (are):
1. ATP
2. water
3. carbon dioxide
4. all the above
Photosynthesis occurs in all cells.
1. True
2. False
How are photsynthesis and cellular respiration related?
1. They have the same equation.
2. They have opposite equations.
3. They both produce carbon dioxide.
4. They both produce oxygen.
During ____, the cell copies its DNA and doubles in size.
1. Prophase
2. Metaphase
3. Interphase
4. Telophase
What is the function of the cell membrane?
1. To protect and support the cell.
2. To perform different functions in each cell.
3. To form a hard outer covering for the cell.
4. To control what enters and leaves the cell.
What are chromatids?
1. Identical strands of chromosomes.
2. Doubled rods of condensed chromatin.
3. Pigments that absorb energy in sunlight.
4. Indentical daughter cells.
What happens during cytokinesis in animal cells?
1. A cell plate forms in the middle of the cell.
2. A new round of mitosis begins.
3. Two new daugther cells are formed.
4. Each organelle divides into two parts.
Fermentation occurs when there is:
1. too much oxygen for the cell to handle.
2. too little oxygen for the cell to use.
Which of the following would be heterozygous?
1. TT
2. tt
3. Tt
If you crossed a hybrid brown-eyed person with another brown-eyed person, what percentage would not be brown-eyed?
1. 100%
2. 50%
3. 25%
4. 0%
In Yorkshire Terriers, floppy ears are dominant over straight ears. If two heterozygous Yorkshire Terriers mate, what percent of their offspring will be have floppy ears?
1. 25%
2. 50%
3. 75%
4. 100%
If a person had a recessive genotype, there are _____ possible phenotype(s).
1. 1
2. 2
3. 3
4. 4
The diagram represents which stage of mitosis?
1. Prophase
2. Anaphase
3. Metaphase
4. Telophase
The diagram below represents which phase of mitosis?
1. Interphase
2. Prophase
3. Metaphase
4. Anaphase
The membrane separating the urine from the blood is _______________________.
1. permeable
2. selectively permeable
3. non-permeable
Using the Punnet Square below, what percentage of offspring would be heterozygous?
1. 100%
2. 75%
3. 50%
4. 25%
In the Punnet Square below, B is dominant for "Brown hair". Given the information in the Punnet Square, what percentage of offspring would you predict to have brown hair?
1. 100%
2. 75%
3. 50%
4. 25%
Which diagram best represents Anaphase?
Organisms that make their own food are called _______.
1. autotrophs
2. heterotrophs
3. lucky
Which organelle in the cell breaks down large food particles into smaller ones?
1. mitochondria
2. ribosomes
3. lysosomes
4. endoplasmic reticulum
What does the diagram below represent?
1. diffusion
2. photosynthesis
3. active transportation
4. migration
What is the volume of the liquid in the graduated cylinder?
1. 35 mL
2. 36 mL
Which metric unit would you use with the instrument below?
1. meter
2. liter
3. gram
What is the first step of the Scientific Method?
1. make a conclusion
2. make a hypothesis
3. state the problem
4. analyze the results
Which of the following is NOT part of the Cell Theory?
1. All living things are made of cells.
2. The cell is the basic building block of all living things.
3. All cells are autotrophs.
4. All cells come from other cells
What instrument made it possible for people to study cells?
1. Double pan balance
2. Telescope
3. Graduated cylinder
4. Microscope
Which scientist coined the term "cell"?
1. Anton van Leeuwenhoek
2. Robert Hooke
3. Gregor Mendel
4. Albert Einstein
6.3 mm = _____ dm
1. 63
2. .63
3. .063
4. .0063
The picture below shows a form of transport. Which type of transport does it show?

The picture below represents a form of transport. Which form is it?
1. cytokinesis
2. engulfing
3. osmosis
4. diffusion
Which term refers to the movement of materials through a cell membrane when energy IS required?
1. Osmosis
2. Diffusion
3. Passive Transport
4. Active Transport
Which organelles are the powerhouses of the cell?
1. Ribosomes
2. Lysosomes
3. Endoplasmic Reticulum
4. Mitochondria
A chromosome is pictured below. The chromosome is composed of two rods attached together. What do we call the rods in the chromosome?
1. chromatid
2. spindle fiber
3. centremere
4. chromatin
In what phase of the cell cycle does a cell spend most of its time?
1. metaphase
2. anaphase
3. prophase
4. interphase
Which of the following IS NOT necessary in all graphs?
1. title
2. labels
3. scale
4. bars
2.1 km = _____ m
1. 21
2. 210
3. 2,100
4. 21,000

Life Science First Semester Review

Quiz