Biology, 10.12.2020 23:10 crimsonkiss

Plz help me it a timed test

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Answer from: itsmaddierae11

Hey There!_____________________________________

$\huge\boxed{\text{Equal and Opposite Force on the Person}}$

_____________________________________ $\Huge\textbf{3rd Law of Motion}$

$\large\texttt{"To Every action there is always an equal and opposite reaction"}$

Consider two bodies A & B which collide with each other. If $F_{AB}$ be the force exerted by the body A on Body B. Then Body B will also exert force $F_{BA}$ on Body A which is equal in magnitude but opposite in direction.

$F_{AB} = - F_{BA}$

The force exerted by Body A on Body B is called Action, and the force exerted by the Body B on Body A is called Reaction.

_____________________________________Best Regards,'Borz'

Answer from: Quest

fertilization, pictured in figure 24.23a is the process in which gametes (an egg and sperm) fuse to form a zygote. the egg and sperm each contain one set of chromosomes. to ensure that the offspring has only one complete diploid set of chromosomes, only one sperm must fuse with one egg. in mammals, the egg is protected by a layer of extracellular matrix consisting mainly of glycoproteins called the zona pellucida. when a sperm binds to the zona pellucida, a series of biochemical events, called the acrosomal reactions, take place. in placental mammals, the acrosome contains digestive enzymes that initiate the degradation of the glycoprotein matrix protecting the egg and allowing the sperm plasma membrane to fuse with the egg plasma membrane, as illustrated in figure 24.23b. the fusion of these two membranes creates an opening through which the sperm nucleus is transferred into the ovum. the nuclear membranes of the egg and sperm break down and the two haploid genomes condense to form a diploid genome.

explanation:

Answer from: Quest

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation:

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