7th Grade Science Assessment

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1. Which of the following best describes how the human body is organized, from the smallest to the largest structure?

Explanation

The human body is organized from the smallest to the largest structure as cells, tissues, organs, and organ systems. Cells are the basic building blocks of the body and they come together to form tissues. Different types of tissues then combine to form organs. Organs work together in specific ways to create organ systems, which are responsible for carrying out specific functions in the body.

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About This Quiz
7th Grade Science Assessment - Quiz

This 7th grade Science Assessment evaluates students' understanding of the scientific method, experiment design, data types, biological systems, and trade-offs in medical testing. It aims to build foundational... see morescientific literacy and critical thinking skills. see less

2. Cells do which of the following?

Explanation

Cells are the basic building blocks of living organisms. They carry out various functions necessary for the survival and functioning of the organism. Respiration is the process by which cells convert nutrients into energy. Cells also take in nutrients from their surroundings to support their metabolic activities. Additionally, cells produce waste products as byproducts of their metabolic processes. Therefore, the correct answer is "all of the above" as cells respire, take in nutrients, and produce wastes.

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3. According to geolocal evidence, the earth is:

Explanation

The correct answer is billions of years old. This is supported by geolocal evidence, which includes various scientific methods such as radiometric dating, fossil records, and geological formations. These methods have consistently shown that the Earth has been in existence for billions of years.

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4. What is the Scienctific Method in order from start to finish for an experiment?

Explanation

The correct order for the Scientific Method in an experiment is as follows: Problem, hypothesis, materials, procedures, data and results, conclusion. This order ensures that the researcher starts by identifying a problem or question to investigate. Then, they form a hypothesis, which is a proposed explanation for the problem. After that, they gather the necessary materials and design the procedures for the experiment. The experiment is then conducted, and data and results are collected. Finally, the researcher analyzes the data and draws a conclusion based on the results obtained.

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5. An important function of the respiratory system is to:?

Explanation

The respiratory system is responsible for the exchange of gases between the body and the environment. It takes in oxygen from the air and delivers it to the bloodstream, where it is then transported to cells throughout the body. Oxygen is essential for cellular respiration, the process by which cells convert nutrients into energy. Therefore, the respiratory system's main function is to absorb oxygen, allowing it to be utilized by the body for various physiological processes.

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6. Which of the following statements is true?

Explanation

All living organisms are made up of cells. This statement is true because cells are the basic structural and functional units of life. They are responsible for carrying out all the necessary processes for an organism to survive and function. From single-celled organisms like bacteria to complex multicellular organisms like plants and animals, cells are the building blocks of life. They provide the necessary structure, support, and perform specialized functions that allow living organisms to grow, reproduce, and maintain homeostasis. Therefore, it can be concluded that all living organisms are made up of cells.

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7. Which of the following is not a cause for extinction?

Explanation

Reproduction is not a cause for extinction because it is a natural process that ensures the survival and continuation of a species. In fact, successful reproduction is essential for the long-term survival of a species. Extinction occurs when a species cannot adapt to environmental changes, loses its sources of food, or is affected by diseases that it cannot overcome.

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8. Substances pass in and out of a cell through the:

Explanation

The cell membrane is responsible for regulating the movement of substances in and out of the cell. It is selectively permeable, allowing certain molecules to pass through while blocking others. This process, known as cellular transport, is essential for maintaining homeostasis and ensuring that the cell receives necessary nutrients and gets rid of waste products. The nuclear membrane surrounds the nucleus and controls the movement of molecules in and out of the nucleus, while the mitochondria are responsible for energy production. Therefore, neither the nuclear membrane nor the mitochondria are primarily involved in the movement of substances in and out of the cell.

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9. The offspring of sexual reproduction:

Explanation

The correct answer is that the offspring of sexual reproduction receives half of its genetic material from each parent. This is because during sexual reproduction, genetic material from both the male and female parents combines to form a unique set of genes in the offspring. This process ensures genetic diversity and allows for the inheritance of traits from both parents.

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10. When you use measure or count data you are using what kind of data?

Explanation

When you use measure or count data, you are using quantitative data. This type of data is numerical and can be measured or counted. It provides information about quantities, amounts, or sizes, and can be analyzed using mathematical or statistical methods. Examples of quantitative data include measurements such as height, weight, temperature, or the number of items in a group.

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11. You have just eaten lunch.  What path does food take through your digestive system?

Explanation

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12. Which of the following is NOT a part of a well-designed experiment?

Explanation

A well-designed experiment should include a control group to compare the results, multiple trials to ensure accuracy and reliability, and a reproducible procedure to ensure that the experiment can be replicated by others. However, a small sample size is not a part of a well-designed experiment because it may not provide enough data to draw valid conclusions and increases the risk of obtaining biased or unreliable results. A larger sample size is generally preferred to increase the statistical power and representativeness of the experiment.

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13. The part of the cell that normally contains its genetic material is the:

Explanation

The nucleus is the part of the cell that normally contains its genetic material. It is responsible for controlling the cell's activities and contains the DNA, which carries the instructions for the cell's functions and characteristics. The nucleus is surrounded by a nuclear membrane, which separates it from the rest of the cell. The cell membrane, on the other hand, forms the outer boundary of the cell and regulates the movement of substances in and out of the cell. While organelles are specialized structures within the cell, they do not typically contain the genetic material.

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14. The offspring of asexual reproduction is identical to the parent except when there is:

Explanation

In asexual reproduction, offspring are typically identical to the parent because they are produced through mitosis, which creates exact copies of the parent's genetic material. However, a genetic mutation can occur during the replication process, leading to a change in the offspring's genetic material. This mutation can result in variations in the offspring's traits, making it different from the parent. Therefore, a genetic mutation is the only factor mentioned in the options that can cause the offspring of asexual reproduction to be different from the parent.

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15. Your heart's function is to pump blood to carry:

Explanation

The heart's function is to pump blood, which carries oxygen, nutrients, and wastes throughout the body. Therefore, the correct answer is "all of the above" as the heart is responsible for circulating all these substances in the bloodstream.

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16. Most human cells have ____ copies of each chromosome?

Explanation

Most human cells have 2 copies of each chromosome. This is because humans have a diploid number of chromosomes, meaning that each cell contains two sets of chromosomes, one set inherited from each parent. These chromosomes carry the genetic material that determines our traits and characteristics. Having two copies of each chromosome allows for genetic diversity and ensures that the necessary genetic information is present for proper cell function and development.

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17. The dominant condition of a characteristic is represented by:

Explanation

The dominant condition of a characteristic is represented by RR and Rr because in genetics, uppercase letters represent dominant alleles, while lowercase letters represent recessive alleles. When an individual has at least one uppercase letter (R) in their genotype, it means they have the dominant allele and will express the dominant trait. Therefore, individuals with genotypes RR and Rr will both exhibit the dominant condition.

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18. "Diversity of species" refers to the idea that:

Explanation

The correct answer is "there are many different kinds of organisms." This refers to the concept of biodiversity, which recognizes that there is a wide variety of species on Earth, each with its own unique characteristics and adaptations. It acknowledges that the natural world is composed of numerous different types of organisms, ranging from plants to animals to microorganisms, all of which contribute to the overall diversity and complexity of ecosystems.

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19. Testing medicines on people invloves both benefits and risks.  A risk that you accept in order to gain a benefit is know as:

Explanation

When testing medicines on people, there are both benefits and risks involved. A "trade-off" refers to accepting a risk in order to gain a benefit. In this context, it means that individuals willingly take on potential risks associated with testing medicines in order to potentially receive the benefits of improved health or medical advancements. This term accurately captures the concept of weighing the potential drawbacks against the potential advantages, making it the correct answer.

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20. According to geological time, which of the following lists organisms from youngest to oldest?

Explanation

The correct answer is mammals, fish, bacteria. This is because mammals are the most recent organisms to have evolved, followed by fish, and bacteria are the oldest organisms on Earth.

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Which of the following best describes how the human body is organized,...
Cells do which of the following?
According to geolocal evidence, the earth is:
What is the Scienctific Method in order from start to finish for an...
An important function of the respiratory system is to:?
Which of the following statements is true?
Which of the following is not a cause for extinction?
Substances pass in and out of a cell through the:
The offspring of sexual reproduction:
When you use measure or count data you are using what kind of data?
You have just eaten lunch.  What path does food take through your...
Which of the following is NOT a part of a well-designed experiment?
The part of the cell that normally contains its genetic material is...
The offspring of asexual reproduction is identical to the parent...
Your heart's function is to pump blood to carry:
Most human cells have ____ copies of each chromosome?
The dominant condition of a characteristic is represented by:
"Diversity of species" refers to the idea that:
Testing medicines on people invloves both benefits and risks.  A...
According to geological time, which of the following lists organisms...
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