Hi,
This is the third time I am asking this question...can anyone help me??
What are the major differences between single celled organisms and multi-cellular organisms in how they acquire nutrients and remove wastes?
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Which organisms are single-celled with no nuclear membranes? *
Abiotic
Eukaryotic
Biotic
Prokaryotic
Which correctly lists the levels of organization with an ecosystem? (Smallest to Largest) *
Community, Species, Population, Ecosystem, Habitats, Organism
Population, Community, Ecosystems, Species, Habitats, Organism
Organism, Species, Population, Community, Ecosystem
Ecosystem, Community, Species, Organism, Community
Which of the following is an abiotic factor? *
birds
sunlight
spruce tree
white-tailed deer
A tiger is a _________ factor? *
Biotic
Abiotic
Which of the following scenarios shows a living organism interacting with another biotic factor? *
A bird walking in water
A koala bear eating a plant
A plant growing in the sun
An Orka jumping out of the water
A group/# of the same species living in the same area. *
Species
Population
Community
Habitat
Which theory is made up of 3 parts, discussing cells? *
Microscopes
Cell Theory
3 Steps of Cells
Robert Hookes Concept of Cells
Who first discovered cells using a microscope? *
Robert Hooke
Theodor Schwann
Matthias Schleiden
Rudolf Virchow
What is it called to be multicellular, have a nuclear membrane, and be living? *
Prokaryotic
Eukaryotic
Abiotic factor
Biotic factor
Which of the following is NOT part of the cell theory? *
Cells are the building block of life.
All living things are made up of cells.
All cells are create from other cells through cell division.
The nucleus is the control center of the cell.
A transmission electron microscope was used to examine a microscopic organism. No nucleus was found. Which of the following correctly describes the organism? *
The organism is prokaryote
The organism is eukaryote
The organism is not alive
The organism should also be observed under a dissecting microscope.
What is the function of the nucleus in a cell? *
The nucleus controls the cells activity.
The nucleus identifies a cell as belonging to a plant.
The nucleus determines what substances enter and leave the cell.
The nucleus can be seen under a transmission electron microscope.
All living organisms are made up of atleast one or more cells. *
True
False
What term refers to the small parts of a cell that carry out different functions? *
organs
tissues
organelles
Which of the following surrounds a cell, keeping the organelles inside and allowing some things to move into and out of the cell? *
cell membrane
cytoplasm
nucleus
Of course, I can help you with that! I apologize for the delay in answering your question.
To understand the major differences between how single-celled organisms and multi-cellular organisms acquire nutrients and remove wastes, let's break it down step by step.
1. Single-Celled Organisms:
In single-celled organisms, such as bacteria or amoebas, the entire organism is comprised of a single cell. As a result, they can directly exchange nutrients and remove wastes through their cell membrane.
Acquiring Nutrients:
Single-celled organisms can acquire nutrients by various means, including:
a. Diffusion: Nutrients can diffuse into the cell from the surrounding environment if they are available in higher concentrations outside the cell.
b. Absorption: Some single-celled organisms have special structures, like flagella or cilia, which allow them to move towards nutrient-rich areas in their environment and absorb nutrients directly.
Removing Wastes:
Similarly, waste removal in single-celled organisms can occur through different mechanisms:
a. Diffusion: Waste products, such as metabolic waste or excess substances, can diffuse out through the cell membrane into the surrounding environment.
b. Exocytosis: Some single-celled organisms may use exocytosis, a process where waste materials are enclosed within vesicles and then expelled out of the cell.
2. Multi-Cellular Organisms:
In contrast, multi-cellular organisms, like plants and animals, are made up of numerous cells that work together to perform specific functions. This specialization requires a more complex system for nutrient acquisition and waste removal.
Acquiring Nutrients:
In multi-cellular organisms, the acquisition of nutrients involves different organs or systems, such as:
a. Digestive System: In animals, the digestive system breaks down food into smaller, absorbable molecules. Nutrients are then absorbed by specialized cells in the gastrointestinal tract and transported to various parts of the body through a circulatory system.
b. Photosynthesis: In plants, chloroplasts within their cells enable them to perform photosynthesis, converting sunlight into energy and carbohydrates. Nutrients are absorbed by the plant's root system from the soil, and water is absorbed through the roots and transported through specialized tissues.
Removing Wastes:
Similar to nutrient acquisition, waste removal in multi-cellular organisms is carried out through specialized systems, including:
a. Respiratory System: In animals, the respiratory system helps remove carbon dioxide and other waste gases from the body. Oxygen is taken in from the environment through organs like lungs or gills.
b. Excretory System: Animals have excretory organs such as kidneys or gills, which filter waste products from the bloodstream and eliminate them as urine or in other forms.
c. Lignin and Cell Walls: In plants, waste removal occurs through various mechanisms, such as the shedding of leaves or the modification of cells to form lignin, a substance that provides structural support.
In conclusion, single-celled organisms directly exchange nutrients and remove wastes through their cell membrane, while multi-cellular organisms have specialized organs and systems for nutrient acquisition and waste removal.