Biology Science

What is the function of the cell membrane?

• Produces proteins for the cell

• Regulates what enters and exits the cell, provides protection and support, and allows for cell communication.

• Stores energy for the cell

• Regulates body temperature

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NGSS.MS-LS1-2

Describe the differences between plant and animal cells.

• Plant cells have a cell wall and chloroplasts, while animal cells do not. Plant cells also have a large central vacuole, while animal cells have none at all.

• Plant cells have a nucleus, while animal cells do not.

• Animal cells have a cell wall, while plant cells do not.

• Plant cells have ribosomes, while animal cells do not.

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NGSS.MS-LS4-2

What is the role of DNA in genetics and inheritance?

• DNA only determines physical appearance, not inherited traits

• DNA carries genetic information and determines inherited traits by coding for proteins

• DNA has no role in genetics and inheritance

• DNA is not involved in the passing down of genetic information

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NGSS.MS-LS3-2

Explain the process of genetic variation.

• Genetic variation is caused by changes in weather patterns and climate.

• Genetic variation is the result of a single dominant gene in a population.

• Genetic variation occurs through processes such as photosynthesis and respiration.

• Genetic variation occurs through processes such as mutation, gene variant recombination in meiosis

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NGSS.MS-LS3-2

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What are the different trophic levels in an ecosystem?

• Plants, animals, fungi, bacteria, and viruses

• Predators, prey, scavengers, decomposers, and parasites

• Producers, primary consumers, secondary consumers, tertiary consumers

• Herbivores, carnivores, omnivores, autotrophs, and heterotrophs

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NGSS.MS-LS2-3

What is homeostasis and why is it important for living organisms?

• The ability of an organism to maintain a stable external environment despite internal changes. It is important for living organisms because it allows them to adapt to their surroundings.

• Homeostasis is the process of breaking down nutrients in the body. It is important for living organisms because it provides energy for daily activities.

• The ability of an organism to maintain a stable internal environment despite external changes. It is important for living organisms because it allows them to function properly and survive in varying conditions.

• Homeostasis is the ability of an organism to reproduce asexually. It is important for living organisms because it ensures genetic diversity.

Explain the concept of negative feedback in homeostasis.

• A process where the body senses a change and activates mechanisms to amplify that change, causing instability in the internal environment.

• A process where the body ignores any changes and does not attempt to maintain a stable internal environment.

• A process where the body senses a change and activates mechanisms to reverse that change, maintaining a stable internal environment.

• A process where the body senses a change and activates mechanisms to create more changes, leading to an unpredictable internal environment.

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NGSS.HS-LS1-3

How do pathogens cause disease?

• Pathogens only cause disease in plants, not in animals.

• Pathogens help the body maintain normal bodily functions.

• Pathogens invade the body and disrupt normal bodily functions.

• Pathogens have no effect on the body.

What are the ways to prevent the spread of infectious diseases?

• Eat raw meat and unwashed vegetables

• Never wash hands

• Share personal items with sick individuals

• Practice good hygiene, get vaccinated, avoid close contact with sick individuals, cover mouth and nose when coughing or sneezing, and stay home when feeling unwell.

What is a role of enzymes in the human body?

• Enzymes are responsible for the creation of energy in the body.

• Enzymes are responsible for the digestion of food and the breakdown of nutrients in the body.

• Enzymes are responsible for the production of hormones in the body.

• Enzymes are responsible for the regulation of body temperature.

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NGSS.MS-LS1-7