The correct answer is D) asexual reproduction
Growing new plants from stem cut is a method of asexual reproduction or better it is regarded as vegetative propagation. When vegetative parts such as root, stem or leaf is used to grow new plants is known as vegetative propagation. This type of propagation does not involves fusion of gametes. Asexual reproduction or vegetative propagation is rapid method to grow new similar plants.
Producing a new plant from the somatic, or body cells of an adult plant is a form of asexual reproduction . In this case, the farmer took a cutting in order to grow a new tree by asexual reproduction.
b. DNA replication
c. DNA conjugation
d. DNA transcription
Explanation:
A carcinoma is a type of cancer that develops from epithelial cells, specifically, a carcinoma is a cancer that begins in a tissue that lines the inner or outer surfaces of the body, and that arises from cells that originate in the endoderm , mesoderm and ectoderm, which are the germ layers during embryogenesis. Carcinomas occur when a cell's DNA is damaged or altered and the cell begins to grow uncontrollably and becomes malignant. It is derived from the Greek, καρκίνωμα, karkinoma, which means pain, ulcer or cancer (derived from karkinos meaning crab).
The two main groups of carcinomas are squamous cell carcinomas and adenocarcinomas.
Carcinomas are the most common type of cancer.
Common places of carcinomas are the skin, mouth, lung, breast, digestive tract and uterus.
Answer:
By the end of meiosis, four cells will be created, each with one of the chromatids from the tetrad. Also, don't forget that there are 23 different tetrads formed during meiosis because each chromosome 1-23 will have a tetrad.
In humans, four tetrads form during the synapsis of meiosis.
In humans, a total of four tetrads form during the synapsis of meiosis. Synapsis occurs during Prophase I of meiosis, where homologous chromosomes pair up and form a structure called a bivalent. Each bivalent consists of two pairs of sister chromatids held together by a protein structure called a synaptonemal complex. Since there are 23 pairs of chromosomes in humans, there will be 46 total tetrads formed during meiosis, as each homologous pair forms a tetrad.
#SPJ6
Correct answer: Act as a catalysts in a chemical reactions of cells, interact with specific substrates like a lock and key, can lower the required activation energy for reaction in living organisms
Enzymes are the protein molecules that act as biological catalyst, which speed up the rate of chemical reaction by lowering the activation energy of the chemical reaction which are required to carry out the chemical reactions.
Enzymes are specific in nature, which means they have a specific shape and only a specific substrate will fit into its active site and carry out the reactions.
All the biochemical reactions which are occurring inside the body require enzyme, without enzyme the rate of biochemical reaction would be much slower as compared to the reactions taking place in presence of enzyme.
Example: Lipase:- An enzyme which found in living organism which help in the digestion and processing of lipid, fats and oils.
Enzymes act as a catalyst in a chemical reaction of cells, interact with specific substrates like a lock and key, and lower the required activation energy for reaction in living organisms, hence options 2, 3, and 4 are correct.
Proteins called enzymes serve as biological catalysts by quickening chemical processes. Substrates are the molecules that enzymes may interact with, and the enzyme changes the substrates into other molecules known as products.
In human bodies, enzymes assist metabolic processes. From breathing to digestion, they support.
Learn more about enzymes, here:
#SPJ6
herpes
gonorrhea
chlamydia
Formal
Informal
Instrumental