WorksheetsQuizizz #14 (2021) LE
Total questions: 14
Worksheet time: 28mins
Certain seaweeds contain a greater concentration of iodine inside their cells than there is in the seawater surrounding them. The energy required to maintain this concentration difference is most closely associated with the action of
ribosomes
mitochondria
vacuoles
nuclei
An ameba is a single-celled organism. It uses its cell membrane to obtain food from its environment, digests the food with the help of organelles called lysosomes, and uses other organelles to process the digested food. From this, we can best infer that
all single-celled organisms have lysosomes to digest food
amebas are capable of digesting any type of food molecule
single-celled organisms are as complex as multicellular organisms
structures in amebas have functions similar to organs in multicellular organisms
A cell with receptors for two different hormones is represented. Which chemical would most likely interfere with the activity of hormone A, but not hormone B?
The diagram represents the organization of structures within an organism. Which term best indicates the structures represented by the circle labeled X?
organelles
chromosomes
organ systems
tissues
The diagram represents a portion of a cell membrane. The arrow indicates that the cell membrane is carrying out the process of
respiration
cell recognition
diffusion
active transport
Which statement concerning the structures within this cell is accurate?
Structure 1 is a chloroplast that carries out photosynthesis.
Structure 2 is a vacuole that contains DNA.
Structure 3 is a mitochondrion, where respiration takes place
Structure 4 is the cell membrane, which provides rigid support for the cell
The human body has many cells that are deep inside the body. For this reason, the human body requires
a transport system and other organs
carbon dioxide from the air
the synthesis of many inorganic compounds
the breakdown of glucose by the digestive system
The diagram represents two types of carbohydrate molecules, glucose and sucrose. Which is more likely to be able to cross a cell membrane, and why
Glucose, because it is larger
Glucose, because it is smaller
Sucrose, because it is larger
Sucrose, because it is smaller
As fi sh are frozen for storage, the water in the cells expands as it cools from 4°C to 0°C and may cause cells to burst. This lowers the quality of the fi sh. Why would soaking the fish briefly in salt water before freezing them might prevent this damage to the cells
A salt solution would cause water to diffuse out of cells before freezing
A salt solution has not effect on water content of cells
A salt solution would causes water to diffuse into the cell before freezing
A cube cut from a potato is placed in a beaker of distilled water. The potato cells have a relatively high concentration of starch and a relatively low concentration of water. The diagram represents the water and starch molecules in and around one of the potato cells in contact with the water in the beaker.
Which choice correctly describes what would be expected to occur in the potato cells, with regard to both the starch and water molecules?
More water will move into the cell than will leave the cell. Starch will remain inside the potato cell.
More water will leave the cell than will enter. Starch will move out of the cell
Water content of the cell will not change. Starch will move out of the cell.
More water will leave the cell than will enter. Starch will remain inside the potato cell.
Considering the movement of molecules, what would happen to the mass of the potato over time.
The mass of the potato would decrease
The mass of the potato would remain the same
The mass of the potato would incrase
In an experiment, a membrane bag containing 95% water and 5% salt was placed in a beaker containing 80% water and 20% salt, as shown below. The setup was put aside until the next day. Based on the information given, state one way the bag or its contents will have changed by the next day. Support your answer with an explanation
Water will move into the bag because there is a higher concentration of salt outside the bag than inside the bag. The bag will get larger as water diffuses in.
Water will move out of the bag because there is a higher concentration of salt outside the bag than inside the bag. The bag will get smaller as water diffuses out.
In which cell structure is energy extracted from nutrients?
chloroplast
ribosome
mitochondrion
vacuole
A small lizard spends the morning hours lying in the sunlight until its body temperature rises. Later on in the day, the lizard rests in a shady area until its body temperature cools. This type of behavior is important to
maintain homeostasis
detect variations
attract mates
obtain nutrients
