"answer the following question in about 200 to 250 words"
☺1) what are silent features of kingdom mycota give two examples?
2)give the function of the following:
a) Adipocytes
b)macrophages
c)fibro blasts
d)plasma cells
e)mast cells.
3)describe fluid mosaic model of plasma membrane?
4)describe any five classes of enzyme and type of reaction they catalyste?
5)explain the process involved in root nodule formation?☺
please answer the question according to the number and whoever will give me proper clear answer I will make them brainliest ❤ ❤ ☺
Answers
1.Kingdom Fungi : The kingdom fungi, includes achlorophyllous, spore producing, multicellular, eukaryotic, organisms.
Salient features:
(a) The body of fungi is filamentous called mycellium. The filaments are known as hyphae.
(b) The hyphae are either multicellular or coenocytic i.e. multinucleate and without cross walls.
© The cell wall contain chitin and non-cellulosic
polysaccharides N-acetyl - glucosamine.
(d) They have two envelop type of cellular organisation.
(e) The are heterotrophic with absorptive type of nutrition. It is either saprobic or parasitic, Saprobic fungi excrete digestive enzymes in the external medium to make complex organic matter soluble for absorption. Parasitic fungi ; absorb nourishment directly from another living organism called host.
(f) Reserve food is glycogen and fat.
(g) Reproduction is both asexual and sexual. Asexual reproduction takes place by spores like zoospores, conidia, ascospores and basidiospores. Sexual reproduction involves fusion of similar gametes. In some fungi, the fusion of two haploid (n) cells results in diploid (2n) cell or zygote.
(h) Many fungi act as decomposers and mineralisers and thus, play an important role in nutrient cycling in the biosphere.
2. a)adipose tissue The Functions of adipose tissue. Adipose tissue acts as an insulating layer, helping to reduce heat loss through the skin. It also has a protective function, providing mechanical protection ("padding") and support around some of the major organs
B)macrophageThe macrophage is a large white blood cell that is an integral part of our immune system. Its job is to locate microscopic foreign bodies and 'eat' them. Macrophages use the process of phagocytosis to engulf particles and then digest them.
C)fibroblasts=The main function of fibroblasts is to maintain the structural integrity of connective tissues by continuously secreting precursors of the extracellular matrix. ... In certain situations epithelial cells can give rise to fibroblasts, a process called epithelial-mesenchymal transition
E)Mast cells=
Although best known for their role in allergy and anaphylaxis, mast cells play an important protective role as well, being intimately involved in wound healing, angiogenesis, immune tolerance, defense against pathogens, and blood–brain barrier function.
that secrete large volumes of antibodies. They are transported by the blood plasma and the lymphatic system.
D)Plasma cells =
originate in the bone marrow; B cells differentiate into plasma cells that produce antibody molecules closely modelled after the receptors of the precursor B cell. Once released into the blood and lymph, these antibody molecules bind to the target antigen (foreign substance) and initiate its neutralization or destruction.
3. The fluid mosaic model describes the structure of the plasma membrane as a mosaic of components —including phospholipids, cholesterol, proteins, and carbohydrates—that gives the membrane a fluid character. ... The main fabric of the membrane is composed of amphiphilic or dual-loving, phospholipid molecules.
4.Enzymes are classified into six categories according to the type of reaction catalyzed: Oxidoreductases, transferases, hydrolases, lyases, ligases, and isomerases. ... During the course of the reaction, the enzyme (E) binds to the substrate/s (S) and forms a transient enzyme–substrate complex (ES).
These classes are:Oxidoreductases,Transferases, Hydrolases, Lyases, Isomerases, and Ligases. This is the international classification used for enzymes
5. =Multiple interactions are involved in the formation of root nodules: 1) The Rhizobium bacteria divide and form colonies. ... 2) The root hairs get curled and are invaded by the bacteria. 3) This invasion is followed by the formation of an infection thread that carries the bacteria into the cortex of the root.