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
nexus9112 [7]
3 years ago
12

The initial filtration step in the glomerulus of the mammalian kidney occurs primarily by: A.passive flow due to a pressure diff

erence. B.passive flow resulting from a countercurrent exchange system. C.active transport of water, followed by movement of electrolytes along a resulting concentration gradient. D.active transport of electrolytes, followed by passive flow of water along the resulting osmolarity gradient.
Biology
1 answer:
Novay_Z [31]3 years ago
4 0
<h2>Answer is option "A"</h2>

Explanation:

  • The first phase in making urine is to isolate the liquid part of your blood (plasma), which contains all the dissolved solutes, from your platelets. Every nephron in your kidneys has a minuscule channel, considered a glomerulus that is continually separating your blood.  
  • Blood that is going to be separated enters a glomerulus, which is a tuft of blood vessels (the littlest of veins). The glomerulus is settled inside a cup-like sac situated toward the finish of every nephron, called a glomerular case. Glomerular vessels have little pores in their dividers, much the same as an exceptionally fine work sifter.  
  • Blood plasma enters the afferent arteriole and streams into the glomerulus, a bunch of entwined vessels. The Bowman's case (additionally called the glomerular container) encompasses the glomerulus and is made out of visceral (basic squamous epithelial cells—inward) and parietal (straightforward squamous epithelial cells—external) layers.  
  • The visceral layer lies just underneath the thickened glomerular storm cellar film and is made of podocytes that structure little cuts where the liquid goes through into the nephron. The size of the filtration cuts confines the entry of enormous particles, (for example, egg whites) and cells, (for example, red platelets and platelets) that are the non-filterable segments of blood.
  • Hence,the correct answer is option A "Passive flow due to a pressure difference".

You might be interested in
What is thought to have caused the extinction of the dinosaurs?
rusak2 [61]
3 asteroid that hit earth
8 0
2 years ago
An owl has good night vision because its eyes can detect a light intensity as small as 5.0 × 10-13 W/m2. What is the minimum num
Lady bird [3.3K]

Answer:

Thus, the minimum number of photons per second is 77.34

Explanation:

Light intensity, I_{min} =  5\times 10^{-13} W/m^{2}

Pupil has a diameter, d = 8.5 mm

                                      = 8.5 x 10^{-3} m

Radius of the eye, r = 4.25 x 10^{-3} m

∴ Area of the eye, A = \pi .r^{2}

                                 = 3.14\times \left ( 4.25\times 10^{-3} \right )^{2}

                                = 5.6\times 10^{-5} m^{2}

Let P_{min} be the minimum number of photons.

Therefore, P_{min} = I_{min} x A

                                              = 5\times 10^{-13} x 5.6\times 10^{-5}

                                             = 2.8\times 10^{-17} W

Thus the minimum number of photons is given by

N_{min}=P_{min}/E

where E = hc/\lambda

             = \left (6.63\times 10^{-34}\times 3\times 10^{8}  \right )/548\times 10^{-9}

            = 3.62\times 10^{-19} J

Therefore, N_{min} = \frac{2.8\times 10^{-17}}{3.62\times 10^{-19}}

                                              = 77.34 photons per second

Thus, the minimum number of photons per second is 77.34

4 0
3 years ago
Consider the factors that affect muscular strength. Read each scenario and identify whether each would result in a stronger or w
nlexa [21]

Muscles are required in breathing, talking, running, walking, and any body movement. Actin and myosins are protein filaments present in muscle cells that help to contract and relax or change the shape of muscles. Muscles are responsible for the movement or motion of organisms. Joints are the connection between two or more bones. Most joints are mobile.

Muscle strength is determined by several factors. Some of those are the physical shape, size, and innervation of the muscles.  

Weak contraction

  • Potassium accumulates in the sarcoplasm.
  • Contracted lower sarcoplasm pH.
  • Begin contraction with muscle already 50%.
  • The circular arrangement of muscle fascicles.

Stronger contraction

  • Increase in muscle belly circumference.
  • A lesser proportion of motor neurons to muscle fibers.
  • Increased recruitment.
  • Increased stimulus frequency.

7 0
2 years ago
If a sample of rock is determined to be approximately 28,000 years old, apporximately what percent of the sample is still carbon
levacccp [35]
Uhhh 34% I think hope I help
3 0
3 years ago
What is the function of an enzyme in the body
levacccp [35]
Enzymes<span> are protein molecules that are manufactured by all plant and animal cells. All cells require </span>enzymes<span> to survive and </span>function<span>. </span>Enzymes<span> are catalysts, which means that they make chemical reactions go faster, but are not changed by the reaction.</span>
8 0
2 years ago
Other questions:
  • Given that our model finch population is capable of rapid evolution in response to a changing environment, explain why you think
    10·1 answer
  • The Galileo ____________ was the source of the close-up images of this asteroid.
    15·2 answers
  • A person scratching an itch is an example of a(n)
    13·2 answers
  • Which of the following best describes a part of the process of digestion?
    14·2 answers
  • A chemical bond in which two ions will stay together because of the mutual attraction of their opposite charges is a
    9·1 answer
  • Hello can you help me please thanks!
    9·2 answers
  • Which of the following can be used to cut DNA so it can be studied?
    10·2 answers
  • Which of these conclusions is correct about the processes M, N, and R in the diagram?
    7·2 answers
  • What are some methods you could use to measure the amount of white in every juncos tail feathers imagine you had the equipment p
    11·1 answer
  • Select all that apply. Select the true statements about Eubacteria. Most live as decomposers and heterotrophs. Most only thrive
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!