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Chapter 4: Problem 63

What conserved core processes are common to both animals and plants? Construct an explanation of the differences based on the selective advantages provided in different environments.

Short Answer

Expert verified
Common processes include cellular respiration, cell division, DNA replication, transcription, and translation. Plants perform photosynthesis while animals consume food. Selective advantages vary based on environmental adaptations.

Step by step solution

01

Understand Core Processes

Identify the biological processes that are common to both animals and plants. Core processes include cellular respiration, cell division, DNA replication, transcription, and translation.
02

Cellular Respiration

Both animals and plants use cellular respiration to convert glucose into ATP, the energy currency of the cell. This process occurs in the mitochondria and is essential for energy production.
03

Photosynthesis vs. Consumption

Plants perform photosynthesis, which converts sunlight, carbon dioxide, and water into glucose and oxygen, whereas animals obtain glucose by consuming food as they cannot perform photosynthesis.
04

Reproduction and Growth

Discuss the similarities in cell division processes like mitosis and meiosis, which occur in both plants and animals for growth and reproduction.
05

Genetic Information Flow

The flow of genetic information from DNA to RNA to protein is conserved across both plants and animals. This involves processes such as DNA replication, transcription, and translation.
06

Evaluate Selective Advantages

Explain how these core processes provide selective advantages in different environments. For instance, photosynthesis allows plants to survive in environments with ample sunlight, while animals have developed diverse digestive systems to utilize various food sources.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Cellular Respiration
Cellular respiration is a vital process for both animals and plants. It converts glucose into ATP, a molecule used for energy by cells. This happens in the mitochondria. The process involves several stages, including glycolysis, the Krebs cycle, and the electron transport chain. Both animals and plants rely on this process to power various cellular activities. While plants can produce glucose through photosynthesis, animals must obtain it by consuming food. This demonstrates the importance of cellular respiration as a conserved core process across different living organisms.
Photosynthesis
Photosynthesis is a unique biological process carried out by plants, algae, and some bacteria. It uses sunlight, carbon dioxide, and water to produce glucose and oxygen. The process takes place in the chloroplasts, specifically within the thylakoid membranes. Photosynthesis consists of two main stages: the light-dependent reactions and the Calvin cycle. While animals cannot perform photosynthesis, this process provides a critical foundation for life on Earth. It produces oxygen, which is essential for all aerobic organisms, and serves as the primary source of energy and organic material for many ecosystems.
Genetic Information Flow
The flow of genetic information is a fundamental process conserved in both plants and animals. This involves DNA replication, transcription, and translation. DNA replication ensures that genetic material is accurately copied before cell division. During transcription, the DNA sequence is converted into messenger RNA (mRNA). Translation then uses this mRNA to synthesize proteins, which are essential for various cellular functions. This consistent flow of genetic information maintains the integrity of genetic codes across generations and supports essential biological activities.
Selective Advantages
Selective advantages are traits that enhance an organism's ability to survive and reproduce in a particular environment. Photosynthesis allows plants to thrive in areas with abundant sunlight by producing glucose independently. This offers a major advantage in energy acquisition. Animals, however, have evolved diverse digestive systems suited to a wide range of diets. These adaptations allow them to exploit various food sources. Such differences highlight the importance of conservation and adaptation in biological processes, optimizing survival and reproduction in distinct ecological niches.
Mitosis and Meiosis
Mitosis and meiosis are crucial for reproduction and growth in both plants and animals. Mitosis results in two identical daughter cells, essential for growth, tissue repair, and asexual reproduction. Meiosis, on the other hand, produces four genetically unique daughter cells, which are essential for sexual reproduction. This genetic diversity enhances the adaptability and resilience of populations. Both processes involve precise stages and checkpoints to ensure accurate division and distribution of genetic material. These conserved mechanisms are fundamental to the continuity of life and evolutionary success.

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Most popular questions from this chapter

Complex multicellular organisms share nutrients and resources, and their cells communicate with each other. A society may encourage cooperation among individuals while discouraging selfish behavior to increase the overall success of the social system, sometimes at the expense of the individual. Scientific questions are testable and often attempt to reveal a mechanism responsible for a phenomenon. Pose three questions that can be used to examine the ways in which a social system regulates itself. Be prepared to share these in small group discussions with your classmates about the similarities between these regulatory strategies and the analogous roles of plasmodesmata and gap junctions in cell communication.

Which of these is a possible explanation for the presence of a rigid cell wall in plants? a. Plants remain exposed to changes in temperature and thus require rigid cell walls to protect themselves. b. Plants are subjected to osmotic pressure and a cell wall helps them against bursting or shrinking. c. Plant cells have a rigid cell wall to protect themselves from grazing animals. d. Plant cells have a rigid cell wall to prevent the influx of waste material.

What type of junctions prevent the movement of chemicals between two adjacent animal cells? a. desmosomes b. gap junctions c. plasmodesmata d. tight junctions

When bacteria lack fimbriae, what are they less likely to do? a. Adhere to cell surfaces b. retain the ability to divide c. swim through bodily fluids d. synthesize proteins

Which element of the cell theory has practical applications in health care because it promotes the use of sterilization and disinfection? a. All cells come from pre-existing cells. b. All living organisms are composed of one or more cells. c. A cell is the basic unit of life. d. A nucleus and organelles are found in prokaryotic cells.
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