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LRI23 7.3.1: RETAKE Cell Structure and Function Quiz

Last updated about 2 years ago
13 questions
This item refers to an investigation in which cells were cut in half. They were cut in a way that one half of each cell contained a nucleus and one half had no nucleus. One hundred fragments from each group were placed in containers with the same conditions. The table below shows the results.
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1

Which of the following hypotheses is supported by the data from this experiment?

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1
If the experiment went one more day, none of the fragments without nuclei would survive. How many of
the cell fragments with nuclei do you predict would be surviving on day 5?_______
Other Answer Choices:
24
71
50
60
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1
Based on the data provided above, choose the words below that will correctly complete the following
phrase: "If a cell fragment does contain a nucleus then it is __________ to survive."
The cell is the basic unit of life. Some organisms are unicellular (made up of a single cell) like bacteria. Other organisms, like humans, are multicellular (made up of trillions of cells). Multicellular organisms have lots of different types of cells. Each type of cell is different because it must perform a different function. In the human body, we have nerve cells which can be as long as from our feet to our spinal cord. Nerve cells help to transport messages around the body. We also have billions of tiny little brain cells which help us think and muscle cells which help us move around. There are many more cells in our body that help us to function and stay alive.
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1

Highlight the sentence that best explains why multicellular organisms need different types of cells.

The cell is the basic unit of life. Some organisms are unicellular (made up of a single cell) like bacteria. Other organisms, like humans, are multicellular (made up of trillions of cells). Multicellular organisms have lots of
different types of cells. Each type of cell is different because it must perform a different function. In the human body, we have nerve cells which can be as long as from our feet to our spinal cord. Nerve cells help to transport
messages around the body. We also have billions of tiny little brain cells which help us think and muscle cells which help us move around. There are many more cells in our body that help us to function and stay alive.
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1

A bacteria is made up of how many cells?

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1

Based on the reading, what type of cell helps a human body to move around?

Scientists have the ability to grow human cells in a lab. They take sample cells from a donor and allow them to grow and reproduce in a petri dish on a nutrient rich gel. A scientist wanted to determine the effect of light, temperature, and available glucose on cell growth. He did an initial test and then changed only 1 thing each trial. Each time the cells were allowed to grow for 48 hours. The data is in the table below. Use this data to answer the questions that follow.
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As the amount of light increase, the growth of cells __________
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As the amount of glucose decreases, the growth of cells __________
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2

If a scientist wanted to maximize (increase) the amount of cell growth which of the following
conditions should he use? (Choose 2)

Untitled Section
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5
Label the organelles
Other Answer Choices:
chromosomes
nucleus
cell wall
chloroplast
cell membrane
vacuole
mitochondria
cytoplasm
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3

Match the correct function with the organelle

Draggable itemCorresponding Item
Allows nutrients and waste to enter and exit the cell.
mitochondria
The powerhouse of the cell. It turns food into energy.
cell membrane
The command center of a cell.
vacuole
Provides strength, structure, and support to a plant cell.
nucleus
Green organelle that allows the plant to make food through photosynthesis.
cell wall
Stores water, is larger in a plant cell.
chloroplast
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1

Use the information to answer the question. A student conducted an experiment using an egg, which is actually just one very large cell. He first placed the egg in vinegar. One day later, he observed that the hard outer shell was gone. Now the egg’s outer covering was a balloon-like membrane. He measured the circumference and mass of the egg. He then placed the egg in pure water for a day, salt water for a day, and corn syrup for a day. He recorded the circumference and mass of the egg each day. The results are shown in the table. Which cell structure plays the biggest role in the movement of liquids into and out of the egg?

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1

Plants can't move on their own. They are stuck. They can't just walk to a stream or pond and
get water whenever they want, like an animal can. This helps to explain which of the following phenomena (thing)?