Genetics
Which statement best describes the function of DNA in cells?
A. DNA breaks down nutrients
B. DNA helps cells make proteins
C. DNA carries out cellular respiration
D. DNA destroys harmful substances
DNA helps cells make proteins
What are the main products of photosynthesis?
A. Carbon dioxide and water
B. Glucose and oxygen
C. Oxygen and nitrogen
D. Water and ATP
B. Glucose and oxygen
What do all producers in an ecosystem have in common?
A. They break down dead organisms
B. They use sunlight to make food
C. They eat other living things
D. They depend on consumers
B. They use sunlight to make food
Which part of the cell contains the genetic information (DNA)?
A. Cell membrane
B. Cytoplasm
C. Chloroplast
D. Nucleus
D. Nucleus
Which of the following is a primary consumer in the Serengeti ecosystem?
A. Lion
B. Grass
C. Wildebeest
D. Bacteria
C. Wildebeest
What are the level of energy pyramids from bottom to top.
A) Plants>Herbivores>Secondary Consumers>Apex Predator
B) Apex Predators>Plants>Herbivores>Secondary Consumers
C) Secondary Consumers>Herbivores>Apex Predator>Plants
D) Herbivore>Plants>Secondary Consumer>Apex Predator
A) Plants>Herbivores>Secondary Consumers>Apex Predator
A homozygous dominant plant (TT) is crossed with a homozygous recessive plant (tt). What percentage of the offspring will show the dominant trait?
A. 0%
B. 25%
C. 50%
D. 100%
D. 100%
Which of these provides energy for the process of photosynthesis?
A. Oxygen
B. Heat
C. Light from the Sun
D. Water
C. Light from the Sun
Which statement describes the role of decomposers in an ecosystem?
A. They provide energy from the Sun
B. They absorb energy directly
C. They return nutrients to the soil
D. They remove carbon from the air
C. They return nutrients to the soil
What happens during mitosis?
A. The cell takes in nutrients
B. The cell makes new organelles
C. The cell divides into two identical cells
D. The cell performs photosynthesis
C. The cell divides into two identical cells
What would most likely happen if a disease wiped out a large portion of the lion population?
A. The plant population would decline
B. Herbivore populations would increase
C. Wildebeest would become extinct
D. Predator populations would increase
B. Herbivore populations would increase
During photosynthesis:
A. light reactions produce sugar, while the Calvin cycle produces O2.
B. light reactions produce NADPH and ATP, while the Calvin cycle produces sugar.
C. light reactions photophosphorylate ADP, while the Calvin cycle produces ATP.
D. the Calvin cycle produces both sugar and O2.
B. light reactions produce NADPH and ATP, while the Calvin cycle produces sugar.
Which tool would a scientist use to determine the probability of inherited traits?
A. Pedigree
B. Cladogram
C. Punnett square
D. Food web
C. Punnett square
Where does cellular respiration primarily occur in a eukaryotic cell?
A. Nucleus
B. Ribosome
C. Chloroplast
D. Mitochondria
D. Mitochondria
Which is an abiotic factor in an ecosystem?
A. Tree
B. Sunlight
C. Bacteria
D. Mouse
B. Sunlight
What process allows cells to make energy from glucose?
A. Photosynthesis
B. Mitosis
C. Cellular respiration
D. Diffusion
C. Cellular respiration
Which graph DESCRIPTION best represents a population after it reaches its carrying capacity?
A. Line steadily increasing
B. Line that rises and levels off
C. Sharp decline
D. Line with random drops
B. Line that rises and levels off
The phrase "survival of the fittest" is an alternate phrase expressing which of the following principles?
a. Natural Selection
b. Inheritance of Acquired Characteristics
c. Mutation
d. Mendelian Inheritance
a. Natural Selection
Which best explains why offspring may have traits that neither parent shows?
A. The traits are affected by temperature
B. The traits skip generations
C. The traits are caused by codominant alleles
D. The traits are acquired during the parents’ lifetime
C. The traits are caused by codominant alleles
What is one similarity between photosynthesis and cellular respiration?
A. Both occur only in animal cells
B. Both convert oxygen into glucose
C. Both involve the movement of energy
D. Both release sunlight as energy
C. Both involve the movement of energy
A decrease in the number of foxes in a forest would most likely lead to________.
A. An increase in predators
B. A decrease in mice population
C. An increase in mice population
D. An increase in plants eaten by foxes
C. An increase in mice population
Which structure allows certain substances to enter or leave the cell?
A. Chloroplast
B. Cytoplasm
C. Cell membrane
D. Vacuole
C. Cell membrane
What explains the increase in wildebeest population in the Serengeti?
A. Introduction of new predators
B. Decrease in grass
C. Elimination of the Rinderpest disease
D. Deforestation
C. Elimination of the Rinderpest disease
--Daily Double--
Sports physical therapists study the biomechanics of how joints, muscles and bones move during athletic activity. What branch of science do they study?
A) Anatomy and physiology
B) Cell biology
C) Molecular Biology
D) Biochemistry
Anatomy and physiology
Which best describes the relationship between chromosomes, DNA, and genes?
A. Genes are found in chromosomes, which are made of DNA
B. Chromosomes are made of genes, which are made of cells
C. DNA contains chromosomes that control genes
D. Genes and chromosomes are made of proteins
A. Genes are found in chromosomes, which are made of DNA
Which statement explains why plants perform both photosynthesis and cellular respiration?
A. Photosynthesis provides sugar, and cellular respiration breaks it down for energy
B. Cellular respiration produces sunlight for photosynthesis
C. Plants use photosynthesis only at night
D. Both processes produce chlorophyll
A. Photosynthesis provides sugar, and cellular respiration breaks it down for energy
Which of the following would most likely cause a population to reach carrying capacity?
A. A sudden increase in rainfall
B. Limited availability of food and water
C. A decrease in predator population
D. Genetic mutations
B. Limited availability of food and water
Which organelle is responsible for producing energy in the cell?
A. Nucleus
B. Ribosome
C. Mitochondrion
D. Endoplasmic reticulum
C. Mitochondrion
Which of the following best explains how energy flows through the Serengeti ecosystem?
A. Energy is destroyed and disappears
B. Energy is recycled through photosynthesis
C. Energy flows from the Sun to producers to consumers
D. Energy moves only between animals
C. Energy flows from the Sun to producers to consumers
An inherited disease or condition is an example of a biological force that is what?
A)Genetic
B) Social
C) Culturally constructed
D) Environmental
A) Genetic