1) Which sequence identifies the levels of organization of body structures in a human from simplest to most complex?
(4) cell →tissue →organ →organ system
100
6) It takes Earth one year to revolve around the Sun. How long will it take for Earth to travel halfway around the Earth?
(3) 6 months
100
11) A main function of a plants seed is to
(1) store food to be used during early development
100
16) One function of a plant’s seed is to
(2) provide food for early development
100
21) Which model can be used to trace genetic inheritance?
(2) pedigree chart
200
(2) A student viewing a cell with a microscope observes a cell wall, a cell membrane, and a nucleus. The presence of these structures indicates that the student is looking at a cell from a
(3) carrot
200
7) Volcanic eruptions are caused primarily by the movement of
(4) tectonic plates
200
12) The layered mixture of gases surrounding Earth is called the
(1) atmosphere
200
17) Which type of organism converts wastes and dead materials into nutrients that can be used by plants?
(3) decomposer
200
22) The transfer of a section of DNA from one organism into the DNA of another organism by scientists is called
(2) genetic engineering
300
3) Which process is responsible for the growth and repair of human tissue?
(2) cell division
300
8) What motion causes day and night?
(3) rotation of Earth
300
13) In which part of a plant cell does photosynthesis occur?
(2) chloroplast
300
18) All of the different organisms interacting in a pond make up
A a community
300
23) Which process is a cause of variation in a species?
(3) sexual reproduction
400
4) The primary role of the endocrine system is to
(1) produce hormones that regulate body functions
400
9) How long does it take for Earth to rotate on its axis seven times?
(2) one week
400
14) What eventually happens to a species when the environment changes and the organisms do not adapt?
(3) extinction
400
19) The clownfish is classified as an omnivore because it eats
(1) both plants and animals
400
24) Which human body systems work directly together to allow locomotion?
(3) skeletal, muscular, and nervous
500
5) Specialized cells protect the human body from disease-causing microbes by
1 producing chemicals that destroy the microbes
500
10) A biological community is made up of all the
(1) populations living in an area
500
15) Rocks are classified as sedimentary, metamorphic, or igneous on the basis of the
(2) way the rocks were formed
500
20) A major function of a plant’s roots is to
(4) take in water
500
25) Which pathway do most nutrients take after a person takes a bite of food?
(1) digestive system →circulatory system→body cells