Answer:
Neurotransmitters
Explanation:
Examples of neurotransmitter are acetylcholine, epinephrine, dopamine, GABA, serotonin, and etcetera. They are released from synaptic vesicles in the presynaptic membrane. They then diffuse through the synaptic cleft or neuromuscular junctions and bind to their receptors on the postsynaptic membrane and invoke an impulse.
The correct option is this: TWO DRAGONFLY SPECIES REGULARLY MATE BUT THEIR GAMETES ARE INCOMPATIBLE.
In biology, there are different types of reproductive barriers, one of these is prezygotic barrier. A prezygotic barrier is a kind of mechanism that prevent reproduction from occurring by blocking fertilization. In this case, the concerned species will be mating together, but their gametes will not be compatible and thus, zygote will not be formed.
A postzygotic barrier on the other hand is said to occur when the reproduction process is blocked after the formation of zygote or after fertilization has taken place. A good example of this is an hybrid mule that is sterile and can not reproduce.
Answer:
The correct answer will be option- All of the choices are correct.
Explanation:
Enterobacteriaceae are a group of bacteria belonging to a large family.
The group includes gram-negative and non-spore forming bacteria mainly like<em> E. coli, Salmonella, Shigella, Enterobacter </em>and <em>Yersinia pestis</em>. The main habitat of these bacteria is the lower gastrointestinal tract of various animals, the reason they are also known as 'enterics".
They are facultative anaerobes and feed on the carbohydrates like sugar and nitrates present in the tract. They ferment the sugars and reduce the nitrates to nitrites. many strains and species of these bacteria are used in the clinical department.
Thus, option- All of the choices are correct is the correct answer.
The equation for density is:
where the mass is in grams and the volume is in 
.
We are given 4,000 kilograms, and we know that there are 1,000 grams in 1 kilogram, so we need to multiply to convert to grams:
We are also given 0.5 
, and we need to convert to . We know that there are 100 cm in 1 m, and since we are talking about cubic volume, we must also raise 100 to the 3rd power: 
. So now we know that there are 1,000,000 in 1 . We need to then multiply 1,000,000 cm by 0.5 in order to find the volume that was given in the question:
So now that we have the correct units, let's plug them into the equation:
So now we know that the density is 8g/cubic centimeter.
Golgi bodies...
-collect and package cell building materials and enzymes
-assemble proteins
Hope this helped :D
~Melis
