WorksheetsBiology STAAR Practice #2
Total questions: 15
Worksheet time: 19mins
An illustration of how a particular DNA mutation will most likely affect the polypeptide produced is shown. What type of mutation is illustrated?
insertion
translocation
substitution
deletion
The DEFENSES of 2 flightless birds that live in different habitats are shown. How do the wings of the Gentoo penguin and the legs of the ostrich provide an advantage in their habitat?
Allows them to find prey
Allows them to escape from predators
Allows them to control body temperature
Allows them to be camouflaged in their environments
Photosynthesis takes in (a) and spits out (b) . Cellular respiration takes in (c)
Overfishing is when fish are caught faster than they can reproduce, causing the decline of fish populations. Overfishing (a) the stability of the ecosystem by (b) .
Reorder the following species from oldest to youngest.
turtle
horse
wolf
tiger
house cat
Reorder the following traits from oldest to youngest.
vertebral column
four limbs
hair
sharp teeth
retractable claws
Cellular respiration takes in (a) and spits out (b) .
Based on the cladogram, the ancestral species most likely had...
a vertebral column
a vertebral column and hair
sharp teeth and retractable claws
ability to purr
Eukaryotic cells have (a) and DNA in the (b) . Prokaryotic cells have (c) and DNA in the (d) .
For an enzyme to be able to catalyze a reaction, the active site must -
cause the enzyme to be destroyed in the reaction
increase the activation energy level
be occupied by an inhibitor
have a complementary shape to the substrate
Snowshoe hares change coat color during the year. In the summer, when there is no snow on the ground, their coat is brown. In the winter when there is snow, their coat is white. Which describes the genetic basis for seasonal changes in coat color?
The snow causes mutations in the genes
The genes are regulated by hormone signals that are altered by changes in the environment
Sunlight causes cancer cells to develop
The genes are deleted during the summer
Two plants are grown together for a time and then separated. Plant 2 is a parasite of Plant 1. Which graph depicts the growth of Plant 1 and Plant 2 during the experiment?
When multiple transitional fossils are found in many rock layers, they provide evidence of -
seasonal variation in the diet of a species
gradual change of a species over time
DNA functioning as the genetic material of organisms
an unchanging environment
ancestral
very old
prey
animal that is killed for food
predator
animal that hunts and kills
erosion
removal of soil/rock by wind/water
symbiotic relationships
relationships that help both parties
catalyze
speed up
enzyme
proteins that speed up chemical reactions
active site
region of an enzyme where reactants bind
parasite
organism that lives and feeds on another organism for food
transition
changing from one state to another
