Biology EOC 1

A scientist performs an experiment to see if acids have an effect on the health of a particular type of plant. Three sets of plants were treated with acidic solutions of known pH while the control set was treated with a solution of neutral pH 
Which is the best conclusion for this experiment? 

• Acid has no effect on the health of this type of plant
•  High acidity is helpful to this type of plant.
• Low acidity is harmful to this type of plant.
• High acidity is harmful to this type of plant.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

if a company claims its product has been proven scientifically, which of the following should've taken place for the results to be considered reliable.

• The company should've held discussions with the leading industrial scientists
• Technology should've been used in both the gathering of of data and data analysis
• Results should've been peer-reviewed and repeated 
• The results of the experiment should've been published in popular magazines

Based on your knowledge of scientific investigations, which stage of scientific investigation did the invention of  the microscope significantly advance.

• communicating the results of an experiment
• gathering the data for an investigation
• generating explanations of phenomena
• plan in the investigation and experimentation

Which of the following best compares the structures of lipids and carbohydrates?

• both are made of monosaccharide monomers but lipids are hydrophobic and carbohydrates are hydrophilic
• both consist of carbon hydrogen and oxygen, but carbohydrates have repeating structural units and lipids do not
• both contain carbon and hydrogen, but carbohydrates also contain oxygen while lipids contain nitrogen
• both have a carbon backbone, but lipids have an amino group and carbohydrates have a carboxylic acid group

Which of the following best describes the differences in function between enzymes and nucleic acids?

• nucleic acids are the building blocks of proteins while enzymes are used as the building blocks of phospholipids
• nucleic acids contain the genetic code for protein synthesis, while enzymes catalyze chemical reactions
• nucleic acids inhibit chemical reactions, while enzymes provide structural support in cells
• nucleic acids transmit signals that begin biochemical reactions, while enzymes convert carbohydrates to lipids and proteins

 Which of the following characteristics defines a cell as eukaryotic?

• Being able to move
• Being able to reproduce
• Having a nucleus
• Having ribosomes

Which statement correctly compares a eukaryote and a prokaryote?

• eukaryotes have a cell wall while prokaryotes have a cell membrane
• eukaryotes have membrane-bound organelles are prokaryotes have few  specialized structures
• eukaryotes use active transport to move substances across a cell  membrane, while prokaryotes use facilitated diffusion
• eukaryotes use flagella to move themselves through substances, while prokaryotes can't move at all

The diagram below represents a cell of a green plant. 
Solar energy is used to produce energy-rich compounds in which structure?

• A
• B
• C
• D

Tags

NGSS.HS-LS1-5

The diagram below represents a cell
Which organelle is the site where amino acids are synthesized into proteins? 

• 1
• 2
• 3
• 4

Tags

NGSS.HS-LS1-6

A person with swollen gums rinses his mouth with warm salt water, and the swelling decreases. Which of the following has occurred?

• The swollen gums have absorbed the saltwater solution.
• The saltwater solution lowers the temperature of the water in the gums.
• The salt in the solution has moved against the concentration gradient.
• The water in the gums has moved out due to the high concentration of salt in the solution. 

Tags

NGSS.HS-PS1-5