Answer:
The Bt toxin gene is not readily accepted by plants.
Explanation:
just did the lesson xx
The toxin Bt (endotoxin CrylA (b)) Bacillus thuringiensis that is a normal inhabitant of the soil, showed himself as a natural insecticide used by farmers engaged in organic farming. In contrast to the Bt-toxin produced by bacteria, genetic engineers included it pesticide in every cell of the seed, and therefore distributed throughout the adult plant, the products from which then are consumed by man. That's why scientists are concerned that after the use of a BT toxin products people get antibiotic resistance and resistance to bt.
The correct answer is:
facilitated diffusion. Glucose and amino acids move in or out if a cell by facilitated diffusion. Facilitated diffusion is the passive transport of molecules, ions, and particles towards a specific membranous protein.
Explanation:
Facilitated diffusion is the means of spontaneous passive transport of molecules or ions crossed a biological membrane through distinct transmembrane integral proteins. In the cell, examples of molecules that necessity uses expedited diffusion to move in and out of the cell membrane are glucose, sodium ions, and potassium ions. They pass using carrier proteins through the cell membrane without power near the concentration gradient.
Answer:
See below
Explanation:
Sperm has digestive enzymes called acrosome to digest into the first layer of the cell
Sperm has an elongated shape making it faster to reach the egg
fallopian tube
Human fertilization is the binding of a human egg and sperm, usually occurring in the ampulla of the fallopian tube. The result of this is the production of a zygote cell or fertilized egg.
Zygote cell
After about 6-12 days the fertilized egg travels to the uterus and attaches to the uterus in a process known as implantation. The egg is pushed back towards the uterus by the cilia. The egg must attach to the uterus to become a viable pregnancy.
The right answer is Ribosomes
The ribosome is a complex composed of RNA and ribosomal proteins, associated with a membrane (in the granular endoplasmic reticulum) or free in the cytoplasm. Common to all cells (prokaryotes and eukaryotes), the ribosome (and especially its composition) varies according to the organisms, even if it is always composed of two distinct subunits.
The ribosome is a huge ribonucleoprotein complex that allows the translation of mRNAs into proteins.
The organelle responsible for protein assembly is the ribosome. It exists either freely in the cytoplasm or attached to the rough endoplasmic reticulum, which also plays a role in protein modification. The Golgi apparatus further modifies and packages proteins, while the nuclear envelope regulates flow of substances.
Out of the organelles you listed: ribosomes, the Golgi apparatus, the nuclear envelope and the endoplasmic reticulum, it is the ribosomes that are responsible for protein synthesis. Ribosomes can either be found freely in the cell cytoplasm or attached to the endoplasmic reticulum (ER), forming what is known as the rough endoplasmic reticulum (RER). The ER, specifically the RER, plays a role in further modification of proteins. Meanwhile, the Golgi apparatus is involved in further protein modification and packaging, and the nuclear envelope acts as a barrier between the nucleus and the cytoplasm, controlling the flow of substances in and out of the nucleus.
#SPJ6