- In which class of algae the cells are prokaryotic?
- Is algae made up of one or more cells?
- Do bacteria have a nucleus?
- Is red algae a plant or protist?
- Are prokaryotes bacteria?
- Is algae a cell?
- What causes algae to grow?
- Is algae plant or animal give reasons?
- Are algae eukaryotic or prokaryotic cells?
- Is algae bacteria or plant?
- Are all prokaryotes harmful?
- Do prokaryotes DNA?
- What are the 3 types of algae?
- Is algae a seaweed?
- Is algae a plant or protist?
- Is a prokaryote a virus?
- Does algae reproduce asexually?
- Where is algae found?
In which class of algae the cells are prokaryotic?
Prokaryotic Algae: The blue-green algae (Cyanophyceae or Cyanophycophyta) are prokaryotic algae.
In these algae, their nuclear materials, deoxyribo-nucleic acid (DNA), is not delimited from the remainder of the protoplasm by a nuclear membrane, but rather it is dispersed to some degree throughout the cell..
Is algae made up of one or more cells?
Algae can be single-celled (unicellular), or they may be large and comprised of many cells. Algae can occur in salt or fresh waters, or on the surfaces of moist soil or rocks. The multicellular algae develop specialized tissues, but they lack the true stems, leaves, or roots of the more complex, higher plants.
Do bacteria have a nucleus?
Bacteria lack the membrane-bound nuclei of eukaryotes; their DNA forms a tangle known as a nucleoid, but there is no membrane around the nucleoid, and the DNA is not bound to proteins as it is in eukaryotes.
Is red algae a plant or protist?
Red algae, (division Rhodophyta), any of about 6,000 species of predominantly marine algae, often found attached to other shore plants. Their morphological range includes filamentous, branched, feathered, and sheetlike thalli.
Are prokaryotes bacteria?
Bacteria. Bacteria are microorganisms made up of a single prokaryotic cell. There are two general categories of cells: prokaryotic and eukaryotic. Sometimes, organisms are referred to as prokaryotes or eukaryotes, based on the type of cell(s) that compose them.
Is algae a cell?
Algae are eukaryotic organisms, which are organisms whose cells contain a nucleus and other structures (organelles) enclosed within membranes. They live in moist environments, mostly aquatic, and contain chlorophyll.
What causes algae to grow?
Some algal blooms are the result of an excess of nutrients (particularly phosphorus and nitrogen) into waters and higher concentrations of these nutrients in water cause increased growth of algae and green plants. As more algae and plants grow, others die.
Is algae plant or animal give reasons?
Algae are photosynthetic creatures. They are neither plant, animal or fungi. Many algae are single celled, however some species are multicellular. Many, but not all of red and brown algae are multicellular.
Are algae eukaryotic or prokaryotic cells?
The algal cell. Algal cells are eukaryotic and contain three types of double-membrane-bound organelles: the nucleus, the chloroplast, and the mitochondrion.
Is algae bacteria or plant?
Algae are sometimes considered plants and sometimes considered “protists” (a grab-bag category of generally distantly related organisms that are grouped on the basis of not being animals, plants, fungi, bacteria, or archaeans).
Are all prokaryotes harmful?
Less than 1% of prokaryotes (all of them bacteria) are thought to be human pathogens, but collectively these species are responsible for a large number of the diseases that afflict humans. Besides pathogens, which have a direct impact on human health, prokaryotes also affect humans in many indirect ways.
Do prokaryotes DNA?
Most prokaryotes carry a small amount of genetic material in the form of a single molecule, or chromosome, of circular DNA. The DNA in prokaryotes is contained in a central area of the cell called the nucleoid, which is not surrounded by a nuclear membrane.
What are the 3 types of algae?
Macroalgae are classified into three major groups: brown algae (Phaeophyceae), green algae (Chlorophyta), and red algae (Rhodophyta). As all of the groups contain chlorophyll granules, their characteristic colors are derived from other pigments. Many of the brown algae are referred to simply as kelp.
Is algae a seaweed?
Seaweeds are a group of algae, and have some special characteristics viz. macroscopic, multi-cellular, benthic, and marine. … All the seaweed species are autotrophic, whereas some algal species rely on other external food materials. Algae inhabit both freshwater and marine waters, while seaweeds inhabit only seawaters.
Is algae a plant or protist?
Plant-like protists are called algae. They include single-celled diatoms and multicellular seaweed. Like plants, algae contain chlorophyll and make food by photosynthesis. Types of algae include red and green algae, euglenids, and dinoflagellates.
Is a prokaryote a virus?
Microorganisms and all other living organisms are classified as prokaryotes or eukaryotes. … Viruses are considered neither prokaryotes nor eukaryotes because they lack the characteristics of living things, except the ability to replicate (which they accomplish only in living cells).
Does algae reproduce asexually?
Algae regenerate by sexual reproduction, involving male and female gametes (sex cells), by asexual reproduction, or by both ways. … Many small algae reproduce asexually by ordinary cell division or by fragmentation, whereas larger algae reproduce by spores.
Where is algae found?
Algae are aquatic, plant-like organisms. They encompass a variety of simple structures, from single-celled phytoplankton floating in the water, to large seaweeds (macroalgae) attached to the ocean floor 2. Algae can be found residing in oceans, lakes, rivers, ponds and even in snow, anywhere on Earth.