Which of these is a characteristic of body cells that require large amounts of energy?(1 point) Responses They have a supplementary Y chromosome. They have a supplementary Y chromosome. They have a storage area for albumin proteins. They have a storage area for albumin proteins. They have a two-layer membrane. They have a two-layer membrane. They have a large number of mitochondria.
They have a large number of mitochondria.
The characteristic of body cells that require large amounts of energy is that they have a large number of mitochondria.
The characteristic of body cells that require large amounts of energy is that they have a large number of mitochondria.
To arrive at this answer, we need to understand what mitochondria are and their role in energy production within cells. Mitochondria are known as the powerhouses of the cell as they are responsible for generating energy in the form of ATP (adenosine triphosphate). More mitochondria in a cell mean higher energy production capacity.
To answer this question, we can eliminate the other options since they are not related to the energy requirements of cells.
- Having a supplementary Y chromosome does not directly affect the energy requirements of cells.
- Having a storage area for albumin proteins is unrelated to energy production; it is involved in protein storage and transport.
- Having a two-layer membrane is a general characteristic of many cell types and does not specifically indicate high energy requirements.
Therefore, the correct answer is that cells requiring large amounts of energy have a large number of mitochondria.
The diagram above represents two cells, X and Y. Which statement is correct concerning Cell X? (1 point) Responses It is a plant cell. It is a plant cell. It does not have a nucleus. It does not have a nucleus. It has an organelle that undergoes photosynthesis. It has an organelle that undergoes photosynthesis. It obtains its energy through cellular respiration in the mitochondria
The statement "It obtains its energy through cellular respiration in the mitochondria" is correct concerning Cell X.
This is because cellular respiration is the process by which cells convert glucose and oxygen into ATP, the main source of energy for cellular activities. Mitochondria are the organelles responsible for carrying out cellular respiration. Therefore, if Cell X obtains its energy through cellular respiration in the mitochondria, it means that it has mitochondria and is carrying out this energy-producing process.
6 C6H12O6 + 6 O2 → 6 H2O + 6 CO2 + ATP 6 C 6 H 12 O 6 + 6 O 2 → 6 H 2 O + 6 CO 2 + ATP 6 CO2 + 6 H2O + light → 6 O2 + 6 C6H12O6 6 CO 2 + 6 H 2 O + light → 6 O 2 + 6 C 6 H 12 O 6 6 CO2 + 6 ADP + light → 6 O2 + 6 H2O 6 CO 2 + 6 ADP + light → 6 O 2 + 6 H 2 O 6 CO2 + 6 H2O → 6 O2 + 6 ATP 6 CO 2 + 6 H 2 O → 6 O 2 + 6 ATP
The equation 6 CO2 + 6 H2O + light → 6 O2 + 6 C6H12O6 represents the process of photosynthesis.
This equation shows that with the help of light energy, carbon dioxide (CO2) and water (H2O) are converted into oxygen (O2) and glucose (C6H12O6). ATP (Adenosine Triphosphate) is not directly involved in photosynthesis. It is a molecule that is produced during cellular respiration, which occurs in the mitochondria.
Therefore, the correct equation for cellular respiration is 6 O2 + 6 C6H12O6 → 6 CO2 + 6 H2O + ATP.
Which of the cells characterized in the chart above is a plant cell? (1 point) Responses B B A A D D C C
Based on the given chart, cell A is a plant cell.
This can be determined by identifying the presence of characteristics specific to plant cells. Some of these characteristics include the presence of a cell wall and chloroplasts, which are responsible for photosynthesis. From the given options, only cell A is described to have an organelle that undergoes photosynthesis. Therefore, cell A is likely a plant cell.
Which of the following statements describes active transport?(1 point) Responses Movement of a specific substance across a membrane. Movement of a specific substance across a membrane. [Movement of a substance against a concentration gradient. D] [Movement of a substance against a concentration gradient. D] Net movement of a substance from a region of higher concentration to a region of lower concentration Net movement of a substance from a region of higher concentration to a region of lower concentration Spontaneous movement of a substance through a semipermeable membrane.
The correct statement that describes active transport is: Movement of a substance against a concentration gradient.
Active transport refers to the movement of ions or molecules across a cell membrane against a concentration gradient. In this process, energy is required to transport the substances from an area of lower concentration to an area of higher concentration. This is in contrast to passive transport, where substances move along the concentration gradient without the need for energy input.
Which of the following describes how lysogenic viruses are different from lytic viruses.(1 point) Responses Lysogenic viruses are cellular and lytic viruses are not. Lysogenic viruses are cellular and lytic viruses are not. Lysogenic viruses do not cause the host cell to burst right away and lytic viruses do immediately cause the host cell to burst. Lysogenic viruses do not cause the host cell to burst right away and lytic virsuses do immediately cause the host cell to burst. Lysogenic viruses are made of DNA. Lytic viruses are made of RNA. Lysogenic viruses are made of DNA. Lytic viruses are made of RNA. Lysogenic viruses only infect plant cells and lytic viruses only infect animal cells.
The correct statement that describes how lysogenic viruses are different from lytic viruses is: Lysogenic viruses do not cause the host cell to burst right away and lytic viruses do immediately cause the host cell to burst.
Lysogenic viruses and lytic viruses are two different viral replication cycles. In the lysogenic cycle, the viral DNA is integrated into the host cell's DNA and is replicated along with it without causing immediate cell lysis. In the lytic cycle, the virus replicates inside the host cell, leading to the lysis or bursting of the cell and the release of new viral particles.
The other options provided in the response choices are not accurate descriptions of the differences between lysogenic and lytic viruses.
Consider the cell cycle shown below. A cell will stop dividing and go into G0, the resting phase, if it receives the proper signal at the G1 checkpoint. What would happen if the G1 checkpoint regulation failed? (1 point) Responses The cell would enter into G0, the resting phase. The cell would enter into G0, the resting phase. The checkpoint is not important, the cell would go on to the next phase. The checkpoint is not important, the cell would go on to the next phase. The cell would continue in the cycle and divide uncontrollably, which may lead to cancer. The cell would continue in the cycle and divide uncontrollably, which may lead to cancer. The cell would remain in G1 and continue to grow.
If the G1 checkpoint regulation failed, the correct statement is: The cell would continue in the cycle and divide uncontrollably, which may lead to cancer.
The G1 checkpoint is an important regulatory point in the cell cycle that ensures the conditions are favorable for cell division. It checks for DNA damage, proper cell size, and nutrient availability before allowing the cell to proceed to the S phase for DNA replication. If the G1 checkpoint regulation fails, it means that the cell might continue dividing without proper regulation and control, which can result in uncontrolled cell growth and potentially lead to the development of cancer.
A student observed cells of a familiar species under a microscope. Analyze the observations the student recorded in the chart below. 1. Ribosomes are present. 2. Genetic material is present. 3. No membrane bound organelles. 4. Cell wall is present. Which of the following observations supports the student’s conclusion that the species is a prokaryote? (1 point) Responses Observation 1 Observation 1 Observation 2 Observation 2 Observation 3 Observation 3 Observation 4
The observation that supports the student's conclusion that the species is a prokaryote is: Observation 3 - No membrane-bound organelles.
Prokaryotes are characterized by the absence of membrane-bound organelles, such as mitochondria, endoplasmic reticulum, and Golgi apparatus. In prokaryotic cells, genetic material is present but is not enclosed within a membrane-bound nucleus. Additionally, prokaryotes often possess a cell wall and ribosomes, as mentioned in observations 1 and 4. Therefore, the absence of membrane-bound organelles (observation 3) supports the conclusion that the observed species is a prokaryote.