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GREYUIT [131]
3 years ago
8

The blind spot in the eye is? question 55 options: ?where photoreceptor cells do not bleach. ?the point at which ganglion cells

synapse with bipolar cells. ?where the optic nerve exits the back of the eye. ?what leads to color blindne
Biology
1 answer:
Sliva [168]3 years ago
4 0
Where the optic nerve exits the back of the eye
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WHICH PROPERTIES OF A SOLID ARE SHARED WITH A LIQUID BUT NOT WITH GAS
Gnesinka [82]
The property of a solid which is shared with liquid but not with gas is that both have definite volume.
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2 years ago
Give a well detailed explanation on an Osmosis Setup.​
Tanya [424]

Explanation:

<em><u>Reverse Osmosis is a technology that is used to remove a large majority of contaminants from water by pushing the water under pressure through a semi-permeable membrane</u></em>

3 0
2 years ago
When mitosis occurs, the DNA inside the cell's nucleus must replicate. The new cell that is formed has an identical copy of its
Tanzania [10]
The answer is <span>DNA polymerases add nucleotides to the exposed base pairs according to base-pairing rules.

DNA polymerase performs the polymerization of DNA. It adds nucleotides to the new DNA strand according to the base-pairing rules. This means that adenine binds to thymine and guanine binds to cytosine. The DNA polymerase is important enzyme responsible for accurate DNA  replication.

Choice 2 is incorrect because DNA does not contain uracil.
Choice 3 is incorrect because helicase untwists DNA.</span>
8 0
3 years ago
Read 2 more answers
Vasopressin secretion is suppressed by _____________.<br><br> hormones<br><br> caffeine
guajiro [1.7K]

Answer: Antidiuretic hormone binds to receptors on cells in the collecting ducts of the kidney and promotes reabsorption of water back into the circulation. In the absense of antidiuretic hormone, the collecting ducts are virtually impermiable to water, and it flows out as urine.

Antidiuretic hormone stimulates water reabsorbtion by stimulating insertion of "water channels" or aquaporins into the membranes of kidney tubules. These channels transport solute-free water through tubular cells and back into blood, leading to a decrease in plasma osmolarity and an increase osmolarity of urine.

Effects on the Vascular System

In many species, high concentrations of antidiuretic hormone cause widespread constriction of arterioles, which leads to increased arterial pressure. It was for this effect that the name vasopressin was coined. In healthy humans, antidiuretic hormone has minimal pressor effects.

Control of Antidiuretic Hormone Secretion

The most important variable regulating antidiuretic hormone secretion is plasma osmolarity, or the concentration of solutes in blood. Osmolarity is sensed in the hypothalamus by neurons known as an osmoreceptors, and those neurons, in turn, stimulate secretion from the neurons that produce antidiuretic hormone.

When plasma osmolarity is below a certain threshold, the osmoreceptors are not activated and secretio of antidiuretic hormone is suppressed. When osmolarity increases above the threshold, the ever-alert osmoreceptors recognize this as their cue to stimulate the neurons that secrete antidiuretic hormone. As seen the the figure below, antidiuretic hormone concentrations rise steeply and linearly with increasing plasma osmolarity.

Osmotic control of antidiuretic hormone secretion makes perfect sense. Imagine walking across a desert: the sun is beating down and you begin to lose a considerable amount of body water through sweating. Loss of water results in concentration of blood solutes - plasma osmolarity increases. Should you increase urine production in such a situation? Clearly not. Rather, antidiuretic hormone is secreted, allowing almost all the water that would be lost in urine to be reabsorbed and conserved.

Explanation: hormones

8 0
3 years ago
On march 24, 1989, an oil tanker ran aground on bligh reef in prince william sound, alaska, and spilled millions of liters of cr
Furkat [3]

Answer:

The graph suggests that the oil spill continuing to harm the salmon population.

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It was an oil spill. Oil spills are generally bad. I took a guess, and then looked it up. I was right.

8 0
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