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zvonat [6]
3 years ago
7

In late adulthood, Mr. Klondike has become increasingly likely to make a socially impolite remarks about other people's appearan

ce or mannerisms. His blunt comments are most likely to indicate late life atrophy of the _____ lobes.
Biology
1 answer:
xz_007 [3.2K]3 years ago
6 0

Answer:

frontal

Explanation:

  • In a mammalian brain, there are four major lobes that are present and one of them is the frontal lobe.
  • The frontal lobe is mainly rich in dopaminergic neurons and thus, it is mainly concerned with functions such as memory, reward, motivation, planning, attention, etc.
  • The process of break down of tissues and cell death in the tissues is referred to as atrophy and since the frontal lobe is associated with the functions as mentioned above its atrophy would lead to a slow decline in these functions.
  • Since Mr. Klondlike behavior is changing his blunt comments are most likely a result of atrophy of the frontal lobe.
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What is the process that leads to a stronger response from cells that detect the edge of a surface than from cells that detect t
olga nikolaevna [1]

Answer:

Lateral inhibition.

Explanation:

Lateral inhibition may be defined as the ability of an excited neuron to reduce or decrease the activity of ts side by or neighbor's neuron. The sensory [perception is increased during lateral inhibition.

The stronger response is detected at the surface edge rather than on the cell's middle surface. The excited neurons move in the lateral direction and decreases the activity of the middle or neighbor neurons.

Thus, the answer is lateral inhibition.

8 0
3 years ago
In each generation, the wings of experimental fruit flies were clipped short for fifty generations. The fifty-first generation w
Rufina [12.5K]

N an experiment, suppose that the wings of fruit flies were clipped short for fifty generations. The fifty-first generation emerged with normal-length wings. This observation would tend to disprove the idea that evolution is based on

a. inheritance of natural variations

b. inheritance of acquired characteristics

c. natural selection

d. survival of the fittest

Inheritance of acquired characteristics. Thus, option "B" is correct.

<h3 /><h3>What is inheritance of acquired characteristics?</h3>

For fifty generations wings of fruit flies were clipped. Hence they acquired this trait in their lifetime and not genetically. If acquired characteristics were capable of passing on to next generation, 50 generations would have been enough to inculcate this clipped wing trait in fruit flies. Despite it, the fifty-first generation did not have clipped wings.

Hence evolution can not occur without genetic variation. A character simply acquired in a lifetime does not create a difference in germ cells and hence is not enough to be passed on to next generation or cause evolution

To learn more about genetic variation click here:

brainly.com/question/848479

#SPJ1

3 0
2 years ago
what is meant by an atp cycle and why is it important, frequent event in cells? how does this involve adp
polet [3.4K]

ATPs are the power cell of a cell. Just like a cell, they need to be charged before they can deliver power.

<h3><u>Explanation:</u></h3>

ATP or the Adenosine Triphosphate is a complex molecule containing a Adenine nitrogen base, a ribose sugar and three phosphates being attached with each other in a chain. Adenosine Triphosphate is the power currency of a cell. It just acts like a rechargeable battery. The metabolic and physiological processes of a cell that needs energy, involves the hydrolysis of ATP into ADP and Pi which are Adenosine Diphosphate and Inorganic phosphate respectively.

Now the ATP is discharged and needs to be charged. So the ADPs are charged into ATPs by different processes of respiration  like Glycolysis, Kreb's Cycle, Electron Transport Chain etc.

Both the hydrolysis and the condensation of ATP makes the ATP cycle.

5 0
3 years ago
Which tectonic plate boundary caused the structure that is circled in the image?
pochemuha

Answer:

I'm guesssing it's B? I did this a very long time ago( two weeks ago)

Explanation:

Most divergent plate boundaries are underwater and form submarine mountain ranges called oceanic spreading ridges. While the process of forming these mountain ranges is volcanic, volcanoes and earthquakes along oceanic spreading ridges are not as violent as they are at convergent plate boundaries.

6 0
3 years ago
A neuron's ability to generate action potentials depends: Question 1 choices Choice A., on the axon reaching threshold and the o
SOVA2 [1]
Answer is A
Firstly axon must reach the threshold level and then depolarisation occurs. Depolarisation phrase means sodium enters and potassium leaves the axon . Choice C can't be because main idea is the entering of sodium ions.
4 0
3 years ago
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