Question:
Which of the following shows a reduction of chromosomes by half? (3 points)
- Male gametophyte to flagellated sperm
- Male gametophyte to spores
- Female gametophyte to zygote
Answer:
<h2>
Sporophyte to spores</h2>
The answer is Catecholamine. It is any of a class of aromatic amines that includes a number of neurotransmitters such as epinephrine and dopamine. The adrenergic receptors are a class of G protein-coupled receptors that are targets of the catecholamines, especially norepinephrine (noradrenaline) and epinephrine (adrenaline). These three - catecholamine, peptide hormones and eicosanoids acts as extracellular membrane receptors which means that these receptors are embedded in the membranes of cells. They act in cell signaling by receiving (binding to) extracellular molecules.
The correct answer is lamellae
The density is the relation mass/volume.
Then you can modifiy the density of a material by either affecting the mass or the volume.
If you increase the volumen while keeping the mass constant, the density will decrease (because you are increasing the denominator of the fraction).
Also, you can decrease the mass while keeping the volume constant to decrease the density (because you are decreasing the numerator of the fraction).
Then the answer is decrease the mass or increase the volume, while the other is kept constant.