Practice EOC

The diagram shows two negatively charged particles separated by a distance. When two negatively charged objects are brought closer together, the objects will...

• lose energy

• gain energy

• have the same amount of energy as before

Tags

NGSS.HS-PS2-4

Which of the following changes would result in the least gravitational force?

• doubling the mass of both objects

• doubling the distance between the two objects

Tags

NGSS.HS-PS2-4

According to the cell theory, what is the source of all new cells? (SC.912.L.14.1)

• Pre-existing cells

• Compounds of carbon, oxygen, and nitrogen

• Individual cell parts, such as mitochondria

• Cytoplasm and similar fluids

Which two types of cell structures are present in a plant cell, but not an animal cell? (SC.912.L.14.3)

• Nucleus and chloroplasts

• Cell membrane and cell wall

• Chloroplasts and mitochondria

• Chloroplasts and cell wall

The cell membrane acts as a barrier between the cell and its environment. Which best describes the type of barrier that the cell membrane forms? (SC.912.L.14.2)

• Impermeable, like a brick wall

• Permeable, but selective, like a wall with gates

• Very permeable, like a fishing net

• Permeable only to water, like a fine net

A cell membrane is composed of a double layer of lipids in which many kinds of proteins are embedded. Many of these proteins act like gates, allowing only certain particles to enter or leave the cell. When a particle has to go against its concentration gradient through one of these gates, energy is supplied by the cell to the correct protein to move the particle through the membrane. A sodium-potassium ion pump is an example of a type of carrier protein that uses a large portion of the cell’s energy to move sodium ions through the cell membrane. (BSD) (L.14.3)What is a primary function of the cell membrane? (BSD)

• determining genetic traits

• defending against foreign particles

• breaking down proteins for energy

• generating energy from mineral nutrients

The table compares the structures and characteristics of two cells. What conclusion about the cells does the data in the table support? (SC.912.L.14.3)

• Cell 1 is from a plant; Cell 2 is from an animal

• Cell 1 is prokaryotic; Cell 2 is from a plant

• Cell 1 is prokaryotic; Cell 2 is from an animal

• Cell 1 is eukaryotic; Cell 2 is prokaryotic

Which explanations accurately describe how cell structures interact in order to maintain homeostasis? Select all that apply.

• The smooth endoplasmic reticulum and Golgi produce lysosomes.

• Molecules can enter the cell by passing through the cell membrane and may take part in chemical reactions within the cytoplasm.

• The cell wall and vacuole function to maintain the structure of plant cells

• The rough endoplasmic reticulum produces the lipid components of the cell membrane.

Tags

NGSS.HS-LS1-3

Which statement is the correct explanation of the function of macromolecules in carrying out a major function in the cell?

• Lipids control the rate of cell reactions.

• Carbohydrates form waterproof coverings.

• Proteins are the main source of energy for the cell.

• Nucleic acids store and transmit hereditary information.

Which explanation accurately describes how matter is transformed within the process of photosynthesis?

• In the light reactions, carbohydrates release hydrogen atoms and form carbon dioxide. The hydrogen atoms join with oxygen to form water molecules in the Calvin cycle.

• . In the Calvin cycle, carbohydrates release hydrogen atoms and form carbon dioxide. The hydrogen atoms join with oxygen to form water molecules in the light reactions

• The hydrogen and oxygen atoms of water are split in the light reactions, and oxygen is released. In the Calvin cycle, hydrogen atoms join with the carbon and oxygen atoms of carbon dioxide to form carbohydrates

• The hydrogen and oxygen atoms of water are split in the Calvin cycle, and oxygen is released. In the light reactions, hydrogen atoms join with the carbon and oxygen atoms of carbon dioxide to form carbohydrates.

Tags

NGSS.HS-LS1-6

NGSS.HS-LS2-5