A student claims that viruses are alive because they have genetic material and can reproduce. Is this student’s claim correct?(1 point)
Responses
No, viruses are not alive because they rely on a host organism to be able to reproduce.
No, viruses are not alive because they rely on a host organism to be able to reproduce.
No, viruses are not alive because they do not have genetic material nor can they reproduce.
No, viruses are not alive because they do not have genetic material nor can they reproduce.
Yes, viruses are alive because they can reproduce.
Yes, viruses are alive because they can reproduce.
Yes, viruses are alive because they have genetic material.
No, viruses are not alive because they rely on a host organism to be able to reproduce.
Of the five characteristics of living things, which one is required for the species to survive but does not have to apply to an individual?(1 point)
Responses
use of energy to function
use of energy to function
reproduction
reproduction
growth and change over a life cycle
growth and change over a life cycle
response to the environment
reproduction
Plant cells can use energy from the sun to make food. Animal cells cannot. Which organelle is responsible for this difference between plant and animal cells?(1 point)
Responses
plasma membrane
plasma membrane
central vacuole
central vacuole
cell wall
cell wall
chloroplast
chloroplast
Which statement about plasma membranes is correct?(1 point)
Responses
Plant cells have cell walls instead of plasma membranes.
Plant cells have cell walls instead of plasma membranes.
Animal cells have cell membranes instead of plasma membranes,
Animal cells have cell membranes instead of plasma membranes,
Both plant cells and animal cells have flexible plasma membranes.
Both plant cells and animal cells have flexible plasma membranes.
Plant cells have rigid plasma membranes.
Both plant cells and animal cells have flexible plasma membranes.
Which organelle processes sugar?(1 point)
Responses
endoplasmic reticulum
endoplasmic reticulum
central vacuole
central vacuole
nucleus
nucleus
mitochondrion
mitochondrion
What is the function of the plasma membrane? (1 point)
Responses
It helps recognize other cells.
It helps recognize other cells.
It helps filter waste inside the cell.
It helps filter waste inside the cell.
It contains hereditary material.
It contains hereditary material.
It helps plants maintain their shape.
It helps recognize other cells.
Which statement is correct about the function of a pseudopod? (1 point)
Responses
It helps unicellular organisms reproduce.
It helps unicellular organisms reproduce.
It helps multicellular organisms reproduce.
It helps multicellular organisms reproduce.
It helps unicellular organisms move.
It helps unicellular organisms move.
It helps multicellular organisms move.
It helps multicellular organisms move.
It helps unicellular organisms move.
Which function is due to specialized cells found only in plants? (1 point)
Responses
photosynthesis
photosynthesis
digesting food
digesting food
signalling muscles to move
signalling muscles to move
carrying oxygen to other cells
photosynthesis
How are leaf cells and root cells different? (1 point)
Responses
Leaf cells can absorb nutrients from the air, but root cells require soil to absorb nutrients.
Leaf cells can absorb nutrients from the air, but root cells require soil to absorb nutrients.
Leaf cells have nuclei, but root cells do not.
Leaf cells have nuclei, but root cells do not.
Leaf cells have chloroplasts, but root cells do not.
Leaf cells have chloroplasts, but root cells do not.
Leaf cells can reproduce, but root cells cannot.
Leaf cells have chloroplasts, but root cells do not.
Chloroplasts play an important role in energy production in plant cells. However, some parts of a plant, like the roots, lack chloroplasts. In one to two sentences, explain the most likely pathway for root cells to obtain energy, and identify the organelles involved.
Root cells obtain energy through the process of cellular respiration, which takes place in the mitochondria. This process allows root cells to convert glucose into ATP, the energy currency of the cell.
Reword this.
Root cells obtain energy through the process of cellular respiration, which takes place in the mitochondria. This process allows root cells to convert glucose into ATP, the energy currency of the cell.
The energy for root cells is acquired through cellular respiration that occurs in the mitochondria, enabling the conversion of glucose into ATP, which serves as the cell's energy source.
In three to five sentences, explain why animal cells do not require a cell wall or a central vacuole for their functions.
Animal cells do not require a cell wall because they have a flexible plasma membrane that provides structural support and allows for movement and expansion. Unlike plant cells, animal cells do not need to withstand the pressure generated by turgidity in a central vacuole. Animal cells rely on other structures, such as cytoskeleton proteins, to maintain shape and provide internal support. Additionally, animal cells obtain nutrients from their environment through ingestion, rather than relying on the central vacuole to store and process nutrients like plant cells do.
Reword this.
Animal cells do not require a cell wall because they have a flexible plasma membrane that provides structural support and allows for movement and expansion. Unlike plant cells, animal cells do not need to withstand the pressure generated by turgidity in a central vacuole. Animal cells rely on other structures, such as cytoskeleton proteins, to maintain shape and provide internal support. Additionally, animal cells obtain nutrients from their environment through ingestion, rather than relying on the central vacuole to store and process nutrients like plant cells do.
The absence of a cell wall in animal cells is compensated by the presence of a flexible plasma membrane, which offers both structural support and enables movement and expansion. Animal cells do not face the challenge of turgidity that plant cells do, thus eliminating the need for a central vacuole. Instead, animal cells maintain shape and provide internal support through cytoskeleton proteins. Nutritionally, animal cells acquire nutrients through ingestion, in contrast to plants that utilize central vacuoles for nutrient storage and processing.
In three to five sentences, compare the process of digesting food in an amoeba (unicellular) to those in a mouse (multicellular).
In an amoeba, the process of digesting food involves engulfing food particles through the formation of pseudopods, creating a food vacuole. Enzymes are then secreted into the food vacuole to break down the food, and the digested nutrients are absorbed directly into the cytoplasm. In a mouse, the process of digesting food is more complex and involves multiple specialized organs, such as the mouth, esophagus, stomach, and small intestine. Food is broken down mechanically by chewing and chemically by enzymes in the stomach and small intestine. The digested nutrients are then absorbed through the walls of the small intestine and transported by the bloodstream to be utilized by various cells and tissues in the body.
Reword this and make it shorter.
In an amoeba, the process of digesting food involves engulfing food particles through the formation of pseudopods, creating a food vacuole. Enzymes are then secreted into the food vacuole to break down the food, and the digested nutrients are absorbed directly into the cytoplasm. In a mouse, the process of digesting food is more complex and involves multiple specialized organs, such as the mouth, esophagus, stomach, and small intestine. Food is broken down mechanically by chewing and chemically by enzymes in the stomach and small intestine. The digested nutrients are then absorbed through the walls of the small intestine and transported by the bloodstream to be utilized by various cells and tissues in the body.
Amoebas engulf food particles with pseudopods, forming a food vacuole where enzymes break down the food for direct absorption into the cytoplasm. Mice have a more complex digestion process involving specialized organs like the mouth, esophagus, stomach, and small intestine. Food is mechanically and chemically broken down by chewing and stomach enzymes, with digested nutrients absorbed through the small intestine walls and transported via the bloodstream for use by cells and tissues.
Summarize this.
Amoebas engulf food particles with pseudopods, forming a food vacuole where enzymes break down the food for direct absorption into the cytoplasm. Mice have a more complex digestion process involving specialized organs like the mouth, esophagus, stomach, and small intestine. Food is mechanically and chemically broken down by chewing and stomach enzymes, with digested nutrients absorbed through the small intestine walls and transported via the bloodstream for use by cells and tissues.