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WorksheetsLife Science Midterm Review 21/22
Total questions: 53
Worksheet time: 29mins
What equipment would a scientist most likely use to measure the volume of a liquid?
Graduated cylinder
Electron microscope
Ruler
Triple beam balance
What is the independent variable in the following hypothesis? HYPOTHESIS: If I spend more time studying, then my grades in science will improve.
Improvement in grades
Location for studying science
Time spent studying
Playing soft music in the background
For scientific data to be considered accurate, valid, and reliable, most experiments should be--?
repeated no more than 2 times
conducted as many times as possible
conducted 3 times
conducted 1 time
A group of students investigated the growth of cherry tomatoes. They had 24 plants, 12 were grown in compost soil and 12 were grown in regular soil. Some plants were grown indoors and some were grown outdoors. Students collected data for six weeks on plant growth. A metric ruler was used to measure the height of the plants. What would be the source of experimental error (mistake)?
The same number of plants were used in each group.
The height of the plants was measured in centimeters.
Two variables were tested.
The same type of tomatoes were used.
James is conducting an experiment to test the effect of insecticides on frogs. What is the control group in his experiment?
The frogs that were exposed to 30 ml of insecticide.
The frogs that were exposed to 15 ml of insecticide.
The frogs that were not exposed to the insecticides.
The frogs that did not survive the experiment.
What is an independent variable?
the variable that remains the same
the variable that is changed or controlled in a scientific experiment
the variable dependent on another variable
the variable that collects the data
Ellen is conducting a scientific experiment in which she measures a certain type of plant’s growth in response to different amounts of fertilizers. What is the dependent variable?
amount of fertilizer
plant growth
type of plant
temperature of the fertilizer
Ellen is conducting a scientific experiment in which she measures a certain type of plant’s growth in response to different amounts of fertilizers. What is the independent variable?
amount of fertilizer
plant growth
type of plant
temperature of the fertilizer
Which instrument is credited for helping scientists develop cell theory?
thermometer
scale
magnifying glass
microscope
Which is the definition of an independent variable?
the ONE thing the experimenter changes on purpose
what the experimenter is watching or measuring ; can't control this variable
what the experimenter must keep the same in order to have a fair experiment
Which is the definition of a dependent variable?
the ONE thing the experimenter changes on purpose
what the experimenter is watching or measuring ; can't control this variable
what the experimenter must keep the same in order to have a fair experiment
Which is the definition of a constant variable?
the ONE thing the experimenter changes on purpose
what the experimenter is watching or measuring ; can't control this variable
what the experimenter must keep the same in order to have a fair experiment
Which statements are included in the cell theory?
All living things are composed of cells.
Living cells come only from other living cells.
Each cell contains a cells membrane, cytoplasm, nucleus, mitochondrion, and endoplasmic reticulum.
Cells are the smallest structure of living things that can perform the functions necessary for life.
Atoms are composed of cells.
What equipment would a scientist most likely use to measure the volume of an irregular object, like a rock?
Graduated cylinder
Electron microscope
Ruler
Triple beam balance
Which picture is modeling measuring the volume of a rock?
Which label shows the structure that carries the code for a trait?
A
B
C
D
What is the term that refers to the small segment of a chromosome that helps code for a trait?
gene
nucleotide base pair
sugar and phosphate backbone
lipid bilayer
Which traits can be inherited?
hair color
personality
height
intelligence
Which traits are acquired (not inherited)?
tattoos
ability to read
ability to taste bitter
hair length
Which process ends with four daughter cells that are genetically different from each other?
mitosis
meiosis
Which phase is missing from mitosis?
Why do plant cells go through the complicated process called photosynthesis?
To darken the leaves of the plant for camouflage
To produce food used later by the plant for energy
To produce carbon dioxide as a form of energy
To produce oxygen as a form of energy
What elements are needed for photosynthesis to occur?
energy (sunlight)
carbon dioxide
water
glucose
oxygen
The process where water molecules move from an area of greater water concentration to an area of lesser water concentration is know as ...?
osmosis
photosynthesis
meiosis
mitosis
The process where water molecules move from an area of high pressure to an area of lower water pressure is know as ...?
osmosis
photosynthesis
meiosis
mitosis
Specialized cells and organ systems can only be found in what kind of organisms?
multicellular organisms
unicellular organisms
What two organelles are found in plant cells and not in animal cells?
cytoplasm and cell wall
cell wall and chloroplast
chloroplast and cell membrane
cell membrane and cytoplasm
What is the name and function of structure A?
Rough Endoplasmic Reticulum: transports materials throughout the cell
Ribosome: makes proteins
Cell Membrane: protects cell and allows certain materials to pass through
Chloroplast: absorbs sunlight to be used for food production
Vacuole: it stores food, water, and wastes for the cell
Which organelle from the plant cell is primarily responsible for converting sunlight into energy?
cell wall
vacuole
chloroplast
mitochondria
A rabbit eats some grass. What is the relationship between the rabbit and the grass?
Rabbit is the predator and the grass is the prey
Rabbit is the decomposer and the grass is producer
Rabbit is the producer and the grass is the consumer
Rabbit is the consumer and the grass is the producer
How do decomposers function within the carbon cycle?
Decomposers break down dead, organic matter which releases carbon dioxide
Decay, which progresses with the help of decomposers, helps recycle carbon back into the ecosystem
Burning of fossil fuels adds carbon dioxide to the atmosphere
Which are life processes?
growth & repair
reproduction
blood circulation
gas exchange
sweating
Which are also life processes?
metabolism
laying eggs
response to environment
making own food
Which is the process of molecules moving from high concentration to low concentration?
diffusion
mitosis
meiosis
osmosis
photosynthesis
Which process would happen with putting a potato slice in tap or salt water?
diffusion
mitosis
meiosis
osmosis
photosynthesis
What would happen if you put a gummy bear in tap water?
water moves into the gummy bear and it increases in size, becoming turgid
water moves out out the gummy bear and it decreases in size
gummy bear stays the same
What would happen if you put an egg (without its shell) into salt water?
water moves into the egg and it increases in size, becoming turgid
water moves out out the egg and it decreases in size
egg stays the same
Based on the principle of diffusion, which direction are the molecules going to move?
From A to Z
From Z to A
Molecules will not move
Which is the correct level of organization within a multicellular organism from smallest to largest?
cell -> tissue -> organ -> organ system -> organism
tissue -> cell -> organ -> organ system -> organism
cell -> tissue -> organ system -> organ -> organism
organisms -> tissue -> cell-> organ system -> organ
organism -> organ system -> organ -> tissue -> cell
Which kingdom includes organisms that are prokaryotic (having no nucleus), have cell walls, and lives in extreme temperatures (hot or cold)?
Bacteria
Protista
Plant
Animal
Archaea
Which kingdom includes organisms that can be unicellular or multicellular, can contain chloroplasts, and all have a nucleus?
Bacteria
Protista
Plant
Animal
Archaea
Which was first referred to as "factors" by Mendel?
genes
nucleotide base pair
sugar and phosphate backbone
lipid bilayer
What is the major difference between plants and fungi?
Plant cells have a nucleus and fungi cells do not.
Plants are autotrophs and fungi are heterotrophs.
Plants are made up of hyphae and fungi are not.
Plants are heterotrophs and fungi are autotrophs.
Which are used to group organisms into the different domains (Archaea. Bacteria, Eukarya)?
Whether they are unicellular or multicellular
Whether they digest food
How they obtain food
Presence or absence of cellular structures
How they reproduce
In the Punnett Square, auburn hair color (A) is dominant over blonde hair color (a). Of the four offspring, how many will have auburn hair?
1
2
3
4
Which are true of sexual reproduction?
two parents invovled
genetic variation in offspring
occurs in many plants and animals
offspring not genetically identical to parent
it is a slow process to reproduce
Which are true of asexual reproduction?
one parent involved
no genetic variation in offspring
occurs in some plants and single celled organisms
offspring genetically identical to parent
no transfer of a copy of DNA to offspring
Which cycle would have the most impact on the process of photosynthesis?
water
nitrogen
carbon
geological
The water, carbon, and nitrogen cycles are all cycles that transfer (a) through the ecosystem.
According to energy pyramids, which organisms have the most energy present?
plants
bacteria
fungi
animals
protists
Which statement best describes the relationship between photosynthesis and cellular respiration?
Plants only perform photosynthesis and not cellular respiration.
The reactants of one are the products of the other.
Plants only perform cellular respiration and not photosynthesis.
Heterotrophs perform photosynthesis and autotrophs perform only cellular respiration.
What is the difference between mitosis and meiosis?
Mitosis: Daughter cells identical to parent
Meiosis: Daughter cells NOT identical to parent
Mitosis has many more steps than meiosis.
Meiosis occurs in body cells and mitosis occurs in reproductive cells.
Meiosis takes longer than mitosis.
A family has two children. One child has freckles and the other does not. If having freckles is dominant (F), what are the possible Punnett squares that represent the crosses between the parents?
