Which of the following statements is correct?
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1 point
Plant cells have cell walls instead of plasma membranes.
Both plant cells and animal cells have plasma membranes.
Only plant cells have plasma membranes.
Animal cells have cell membranes instead of plasma membranes,
Both plant cells and animal cells have plasma membranes.
How are leaf cells and root cells different?
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1 point
Leaf cells have chloroplasts, but root cells do not.
Leaf cells can reproduce, but root cells cannot.
Leaf cells have nuclei, but root cells do not.
Leaf cells can absorb nutrients from the air, but root cells require soil to absorb nutrients.
Leaf cells have chloroplasts, but root cells do not.
Which of the following is a characteristic of a living thing? (Click all 3 answers that apply)
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3 points
living things must grow or change during their life cycle
living things must maintain homeostatis
living things must be made of one or more cells
living things must thrive without energy
living things must grow or change during their life cycle, living things must maintain homeostasis, living things must be made of one or more cells.
Of the following characteristics of living things, which is required for the SPECIES to survive, but not for the individual to survive?
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1 point
response to the environment
reproduction
use of energy to function
growth and change
reproduction
Which organelle is located ONLY in plants and is required for a plant cell to convert energy from the sun into food?
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1 point
cell wall
plasma membrane
chloroplast
central vacuole
chloroplast.
There are a few differences between the jobs of plant and animal cells. Which of the following is unique, specialized PLANT cell function?
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1 point
transporting oxygen
photosyntheiss for food
signaling movement in other areas of the organism
digestion of energy source
photosynthesis for food
Which organelle processes sugar to provide energy for the cell? It is known as the "powerhouse of the cell".
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1 point
central vacuole
nucleus
endoplasmic reticulum
mitochondrion
mitochondrion.
n a prokaryotic organism, such as an amoeba, why is the pseudopod important?
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1 point
It helps them move
it helps them reproduce
it helps them release wastes
it helps them store nutrients until needed
It helps them move.
What organelle helps recognize other cells and what is okay to let into the cell
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1 point
Rough ER
Golgi Apparatus
Smooth ER
Plasma Membrane
Plasma Membrane.
Choose the correct order of the levels of organization in an animal organism, starting smallest to largest.
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1 point
organism -> organ system -> organ -> tissue -> cell
tissue -> cell -> organ system -> organ -> organism
cell -> tissue -> organ -> organ system -> organism
organ -> organ system -> cell -> tissue -> organism
cell -> tissue -> organ -> organ system -> organism.
In 3 to 5 sentences:
Explain why some cells in eukaryotic organisms are specialized.
Provide two examples of specialized cells and their functions to support your answer.
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5 points
Some cells in eukaryotic organisms are specialized because they need to perform specific functions for the organism. Each specialized cell has unique structures that allow them to accomplish their tasks more efficiently. For example, red blood cells are specialized cells in the circulatory system that carry oxygen to the body's tissues. They are flat and round, which gives them maximum surface area to carry oxygen molecules. Another example of specialized cells are muscle cells, which enable movement and support throughout the body. They are long and thin, which allow for contraction and relaxation, allowing for the movement of the body. These specialized cells have specific structures and functions that enable them to perform specific tasks and contribute to the overall survival and success of the organism.
In this unit, we learned that plant cells have a cell wall and central vacuole, but these organelles are not found in animal cells
In 3-5 sentences, explain why plant cells need these organelles, but animal cells do not.
Part 1) (1 pt) Explain the function of the cell wall in a plant cell
Part 2) (1 pt) Explain the function of the central vacuole in a plant cell
Part 3) CONNECT THE DOTS! ( 2 pts) Infer why an animal cell does not require a central vacuole or a cell wall
Part 1) The cell wall provides structure and support to a plant cell. This is because plant cells need to maintain a particular shape due to their lack of mobility. The cell wall is relatively rigid, and it helps them withstand the pressure created by water moving into the cell.
Part 2) The central vacuole stores water and other nutrients and materials. It is much larger in plant cells than in animal cells and can make up to 90% of the cell's volume. The central vacuole helps plant cells maintain a turgor pressure (rigidity) critical for the plant's structure
Part 3) Plant cells have a cell wall and a central vacuole because they need significant structural support and the ability to store large volumes of water and nutrients due to their lack of mobility. Animal cells, on the other hand, can maintain their structure using the cytoskeleton of the cell. Therefore, they do not require additional structural support from a cell wall or a large central vacuole for water and nutrient storage.