Living
Things
Things
Which structures carry out life functions within cells?
1) tissues
2) organ systems
3) organelles
4) organs
3) organelles
Most of the oxygen in the atmosphere results from the process of
1) fermentation
2) photosynthesis
3) regulation
4) respiration
2) photosynthesis
The transfer of genes from parents to their offspring is known as
1) differentiation
2) heredity
3) immunity
4) evolution
2) heredity
A species that lacks the variation necessary to adapt to a changing environment is more likely to
1) develop many mutated cells
2) become extinct over time
3) begin to reproduce sexually
4) develop resistance to disease
2) become extinct over time
What country is Mrs. Afonso and her family from?
1) Brazil
2) Spain
3) Portugal
4) Chile
3) Portugal
Which sequences shows a decreasing level of complexity?
1) organs → organism → cells → tissues
2) organism → cells → organs → tissues
3) cells → tissues → organs → organism
4) organism → organs → tissues → cells
4) organism → organs → tissues → cells
Photosynthesis transforms molecules of water and carbon dioxide into molecules of
1) carbohydrate and oxygen
2) carbohydrate and nitrogen
3) polypeptide and oxygen
4) polypeptide and nitrogen
1) carbohydrate and oxygen
A boy inherits genes for tallness, but his growth is limited as a result of poor nutrition. This is an example of
1) an inherited disorder
2) environmental influence on gene expression
3) expression of a hidden trait
4) a characteristic controlled by more than one pair of genes
2) environmental influence on gene expression
A stable ecosystem is characterized by having
1) predators that outnumber their prey
2) a continual input of energy
3) limited autotrophic nutrition
4) no competition between species
2) a continual input of energy
What street does Ms. Afonso live on?
1) 23 Gamete Lane
2) 8 GRRREN ST
3) 46 Somatic Avenue
4) 3000 Bellmore Avenue
2) 8 GRRREN ST
Hereditary information is stored inside the
1) ribosomes, which have chromosomes that contain many genes
2) ribosomes, which have genes that contain many chromosomes
3) nucleus, which has chromosomes that contain many genes
4) nucleus, which has genes that contain many chromosomes
3) nucleus, which has chromosomes that contain many genes
Which statement best describes enzymes?
1) they slow down the rate of breathing
2) they are the building blocks of polymers
3) they speed up the conduction of impulses along a nerve cell
4) they influence the rate of chemical reactions
4) they influence the rate of chemical reactions
Changes in the genetic code of a human can be transmitted to offspring if they occur in
1) cancer cells
2) gametes
3) cell membranes
4) antibodies
2) gametes
Which human activity would most likely have a positive impact on the environment?
1) using pesticides to decrease populations of birds of prey
2) increasing emissions into the atmosphere to decrease the pH of lakes
3) using parasites for biological control of pests to increase crop yields
4) engaging in uncontrolled hunting and trapping to reduce populations of carnivores
3) using parasites for biological control of pests to increase crop yields
What is Ms. Afonso's favorite organelle?
1) Ribosome
2) Large water vacuole
3) Chloroplast
4) Mitochondria
4) Mitochondria
Certain poisons are toxic to organisms because they interfere with the function of enzymes in mitochondria. This results directly in the inability of the cell to
1) store information
2) build proteins
3) release energy from nutrients
4) dispose of metabolic wastes
3) release energy from nutrients
An individual who has had chicken pox rarely gets this disease again. This situation is an example of
1) biological control
2) negative feedback
3) active immunity
4) passive immunity
3) active immunity
The greatest degree of genetic variation would be found in offspring that result from
1) binary fissions
2) fertilization
3) regeneration
4) grafting
2) fertilization
Beak structures differ between individuals of one species of bird. These differences most likely indicate
1) the presence of a variety of food sources
2) a reduced rate of reproduction
3) a large supply of one kind of food
4) an abundance of predators
1) the presence of a variety of food sources
How do you spell Ms. Afonso's first name?
1) Orchidia
2) Orquidea
3) Orqiudea
4) Orkeyda
2) Orquidea
Which statement best explains why some cells in the reproductive system only respond to certain hormones?
1) these cells have different DNA than the cells in other body systems
2) these cells have specific types of receptors on their membranes
3) reproductive system cells could be harmed if they made contact with hormones form other body systems
4) cells associated with the female reproductive system only respond to the hormone testosterone
2) these cells have specific types of receptors on their membranes
1) less lactic acid is formed during anaerobic respiration than aerobic respiration
2) anaerobic respiration requires more oxygen than aerobic respiration
3) the net gain of ATP molecules is less in anaerobic respiration than in aerobic respiration
4) less energy is required during anaerobic respiration than aerobic respiration
3) the net gain of ATP molecules is less in anaerobic respiration than in aerobic respiration
A dogfish shark contains 24 chromosomes in each of its muscle cells. How many chromosomes are normally found in each of its gametes?
1) 6
2) 12
3) 24
4) 48
2) 12
Which would be the most likely effect of a drastic reduction in all the producer organisms in a meadow environment?
1) the grasshoppers would multiply rapidly
2) the rabbit population would decrease
3) all of the snake populations would increase
4) all of the decomposers would die
2) the rabbit population would decrease
How does Ms. Afonso spend her free time?
1) playing on a women's national soccer team
2) fighting climate change
3) cloning sheep
4) planting flowers in her garden
4) planting flowers in her garden