1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
viktelen [127]
3 years ago
10

Which is an example of potential energy

Biology
2 answers:
Elena L [17]3 years ago
7 0

A rollercoaster sitting on top of the hill getting ready to go down

A person I’m ready position to run

Hope this helps!

Alecsey [184]3 years ago
4 0

A ball on top of a hill.

You might be interested in
Match the items: a. Heart b. Blood Vessels c. Capillaries d. Lungs e. Kidney 1. Regulates blood volume 2. Can decrease blood pH
Assoli18 [71]
<h2>Answer:</h2>

I believe the correct answer is:

a: 4

b: 3

c: 5

d: 2

e: 1

<h2>Explanation:</h2>

a: Heart - Can increase blood pressure by beating faster

b: Blood vessels - Can lower blood pressure by dilating

c: Capillaries - Exchange oxygen/carbon dioxide with tissues and alveoli

d: Lungs - Can decrease blood pH by increasing respiratory rate

e: Kidney - Regulates blood volume

<h2>Further Explanation:</h2><h3>a: Heart - Can increase blood pressure by beating faster</h3>

The heart is a fist sized organ in the center of the chest cavity and is lying on a wider base that is longer than its height and an apex that elongates to the left side of the chest. It functions to circulate and distribute blood to different regions of the body using blood vessels. The heart has several baroreceptors that sense a decrease in the volume of blood or pressure and it adjusts by beating faster. It also is controlled autonomously by the autonomic nervous system that will also adjust its pace when it recieves signals to do so in the case of low bloo pressure or in cases of high demand such as in a scary activity.

<h3>b: Blood vessels - Can lower blood pressure by dilating</h3>

Blood vessels are hollow tissues that have elastic walls which control the size of its luen. They function to supply blood to tissues in every region of the body. In cases when the blood pressure is too high, it recieves signals from the brain to its muscles that have beta cholinergic receptors that instruct it to dilate/relax so that blood will have inimal resistance hence less pressure as it is passing through it.

<h3>c: Capillaries - Exchange oxygen/carbon dioxide with tissues and alveoli</h3>

These are the smallest of all blood vessels and they are distributed in every region of the body. They have elastic and permeable walls which allow red blood cells carrying oxygen to move into the tissues they are moving through and also nutrients while at the same time they pick up waste and red cells that have collected carbon dioxide from the tissues. They also are densely populated in alveoli to perform the same function during respiration.

<h3>d: Lungs - Can decrease blood pH by increasing respiratory rate</h3>

CO2 is acidic while O2 is a Lewis base. In cases where the blood has a pH that is more basic than the required pH of 7.3, the body either undergoes a metabolic compensation through retaining more bases such as chloride ions. In case there is a problem with the kidney, the body triggers the respiratory system to increase the respiratory rate so that oxygen is not exposed to the alveoli for a longer time to be absored fully hence it will be in blood at a lesser percentage compared to acidic CO2 which will have a higher percentage making the blood more acidic. To understand how these work using a diagram, look at the table below for arterial blood gas.

<h3>e: Kidney - Regulates blood volume</h3>

The kidney filters blood to remove and balance fluids. In the afferent arteriole that supplies the kidney with the blood to be ultrafiltrated there are specific baroreceptrs that sense a rise or a fall in blood volume. The kidney if the volume is low will retain more ions so that it can draw water back into the vasa recta and increasing the blood volume. If the volume is too high, it will lose more ions into urine and so water will be lost as part of urination until the volume stabilizes to the correct volume.

Level: College

5 0
3 years ago
Is this correct? Or am I doing this wrong?
lara [203]
Yes, you are doing this correct.  
8 0
3 years ago
Two similar plant cells are placed in two solutions. Cell 1 shrinks in size and cell 2 stays the same. Based on the evidence in
Ahat [919]
I believe is that one is salt water and the other is maybe regular water, salt water will shrink cells
7 0
3 years ago
In the SDS-PAGE (sodium dodecylsulfate - polyacrylamide gel electrophoresis) method, separation takes place on the basis of:____
Vera_Pavlovna [14]

Answer:

B

Explanation:

Sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) is a method of separating molecules based on the difference of their molecular weight.

8 0
3 years ago
Pigeons learn to flap their wings to avoid shock ________ easily than they learn to peck a disk to avoid shock. they learn to fl
Gnom [1K]
<span>Pigeons learn to flap their wings to avoid shock more easily than they learn to peck a disk to avoid shock. they learn to flap their wings to obtain food less easily than they learn to peck a disk to obtain food.

That's what'd I'd assume the answer would be.</span>
7 0
3 years ago
Other questions:
  • RNA primers must be present on which strand during DNA synthesis? See Section 15.3 (Page) . View Available Hint(s) RNA primers m
    8·1 answer
  • Which process most likely enabled the formation of the early protists?
    10·1 answer
  • I really need this done right now!!!!!
    13·2 answers
  • You have created a small-scale ecosystem in your laboratory that exactly mimics the nitrogen cycle in nature. You accidentally r
    11·1 answer
  • For each of the following factors, indicate whether the pH increases or decreases and explain why the factor may cause variation
    6·1 answer
  • Science, meiosis: Question and answers are in the photo below:
    14·2 answers
  • Which was not a part of Darwins theory of evolution? A. mutations B. survival of the fittest C. pangenes D. common ancestors
    12·1 answer
  • Which part of Earth absorbs the most sunlight?
    5·2 answers
  • I have 10 minutes left
    15·2 answers
  • After a major crude oil spill, a variety of specific microbes is distributed in the area of the spill. this would be an example
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!