7th Grade Life Science End Of The Year Final Review

The cell theory is made up of three components. Which of the following statements is a component of the cell theory? SC.6.L.14.2

• Cells are composed of atoms and molecules

• All cells come from pre-existing cells.

• All cells are made up of units called organelles.

• Cells reproduce through spontaneous generation.

The word equation below summarizes a process that organisms use to obtain energy from food.

Glucose + Oxygen › Carbon dioxide + Water + Energy

What process is represented by the equation? SC.8.L.18.2

• cellular respiration

• decomposition

• photosynthesis

• transpiration

Tags

NGSS.MS-LS1-7

The illustration shows that sexual reproduction involving two parent pea plants resulted in the production of four offspring.

Which of the following statements best describes heredity in organisms that reproduce sexually? SC.7.L.16.1

• All four offspring received all of their genetic information only from Parent 1 and are therefore identical to that parent

• All four offspring received all of their genetic information only from Parent 2 and are therefore identical to that parent

• All four offspring are genetically unique and did not receive any of their genetic information from either parent.

• All four offspring are genetically unique and received some of its genetic information from each parent.

Tags

NGSS.MS-LS3-2

Plant cells contain chlorophyll. What is the role of chlorophyll in plant cells? SC.8.L.18.1

• It gives off oxygen during respiration

• It absorbs light energy during photosynthesis

• it aids in cell division

• it aids in pollination

Tags

NGSS.MS-LS1-6

Dr. Brown performed several repetitions of an experiment using fruit flies. He developed a theory and then published a paper in a distinguished scientific journal. Which of the following will most likely happen next? SC.7.N.1.2

• Other scientists will try to replicate his work.

• Other scientists will try to take credit for his work.

• Other scientists will accept Dr. Brown's theory as fact.

• Dr. Brown's paper will be published in a periodical read by the general public.

Different types of variables affect the results of an experiment. Which of the following statements best describes an outcome variable (dependent variable)? SC.7.N.1.4

• An outcome variable (dependent variable) is never affected by the manipulation of a test variable (independent variable).

• An outcome variable (dependent variable) is part of the control group in an experiment because it does not change.

• An outcome variable (dependent variable) is intentionally held constant throughout an experiment.

• An outcome variable (dependent variable) is a variable that might be affected by the manipulation of a test variable (independent variable).

Marc wants to use the picture above to show how carbon cycles between organisms and the environment. Which parts of the carbon cycle is shown in the illustration? SC.8.L.18.3

• cellular respiration and decomposition

• combustion and decomposition

• decomposition and photosynthesis

• photosynthesis and cellular respiration

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Living systems follow the law of conservation of energy. The diagram below shows how energy stored in food moves among the organisms in a mangrove ecosystem. In what form is the energy that is stored in food? SC.8.L.18.4

• heat

• light

• chemical

• mechanical

Tags

NGSS.MS-LS2-3

Cells are the basic units of life. Which statement is true about all of the cells that make up any organism?SC.6.L.14.3

• All the cells have the same internal structures.

• All the cells form tissues that make up organs.

• All the cells undergo similar processes to maintain homeostasis.

• All the cells carry out the process of photosynthesis to make nutrients.

Tags

NGSS.MS-LS1-3

The diagram shows the movement of material from the inside of a cell to the outside of the cell through a protein channel, as indicated by arrows.

Which cell part is the barrier between the inside of the cell and the environment outside the cell? SC.6.L.14.4

• cell wall

• cell membrane

• mitochondria

• endoplasmic reticulum

Tags

NGSS.MS-LS1-2