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EastWind [94]
3 years ago
13

3) An astronomer observes four stars from two different locations on Earth. For which star will the

Biology
1 answer:
laiz [17]3 years ago
3 0

Answer:

An astronomer observes four stars from two different locations on Earth. Will the astronomer observe the greater parallax for a star that is closer to Earth or farther from Earth? the greater parallax for a star that is closer from Earth.

Explanation:

i hope u read to found the answer

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Which molecules do cells need to release energy? Choose the claim you think is most accurate. Claim 1: Cells need glucose to rel
Paraphin [41]

Answer:

i don’t know if it’s a multi question but here are my answer bellow

Claim 1:Cells need glucose to release energy

Claim 3:Cells need oxygen to release energy.

Claim 5:Cells need glucose AND oxygen to release energy

4 0
2 years ago
a mechanism that is effective in maintaining a normal glomerular blood pressure only if the systemic mean arterial pressure rema
rodikova [14]

A mechanism that is effective in maintaining a normal glomerular blood pressure only if the systemic mean arterial pressure remains between 80 and 180 mm hg is called renal autoregulation.

<h3>What is renal autoregulation?</h3>
  • Autoregulation is the inner characteristic of blood vessels present in end organs, like heart, kidney, and mind, by which they dilate or constrict in response to pressure changes, thus help to keep the blood flow generally steady.
  • Usually our body tries to regulate our blood pressure in range of 50 to 150 mm Hg.
  • Regulation of renal blood flow and glomerular blood pressure in kidneys is called renal autoregulation.
  • There are 3 mechanisms of renal blood flow namely myogenic response (MR), tubuloglomerular feedback (TGF) and third mechanism that is independent of TGF but slower than MR.

Learn more about renal autoregulation here:

brainly.com/question/28064114

#SPJ4

3 0
1 year ago
Oxygen is a by-product of ______________ and is needed by living organisms for the process of ______________.
Katyanochek1 [597]
The answer is D, photosynthesis and respiration.


—Evidence—

Oxygen is a byproduct of photosynthesis and, correspondingly, carbon dioxide the byproduct of respiration.

Oxygen gives our cells the ability to break down food in order to get the energy we need to survive. Although other animals may use different organs to breathe with, they all get oxygen into their bodies through respiration.
4 0
3 years ago
increasing intracellular cAMP leads to smooth muscle relaxation by: Group of answer choices inhibiting IP3 channels, leading to
kirza4 [7]

Answer:

1. Inhibiting IP3 channels, leading to decreased Ca2 in the sarcoplasm and reduced contraction.  

2. Increasing the relative activity of MLCP, leading to a decrease in tension.

3. Activating K channels, increasing K leaking out of the cell which hyperpolarizes it and decreases the likelihood of Ca2 entry.

Explanation

In smooth muscle, cyclic AMP (cAMP) mediates relaxation because cAMP inhibits a specific kinase required for myosin light chain protein (MLCP) phosphorylation, thereby triggering contraction in the smooth muscles. It has been shown that cAMP inhibits 1,4,5-trisphosphate (IP3)-dependent calcium ions (Ca 2+) release by activation of the cGMP-dependent protein kinase (PKG). PKG proteins act to modulate Ca2+ oscillations by stimulating sarcoplasmic Ca2+-ATPase membrane proteins, increasing Ca2+ in the sarcoplasmic reticulum stores and Ca2+ efflux from the cells, and activate voltage-gated potassium (K) channels, thereby leading to membrane hyperpolarization and reducing Ca2+ entry through Ca2+ channels.

6 0
2 years ago
In descriptions of the superficial anatomy of the human body, the neck is the __________ region.
FromTheMoon [43]
The neck is the Cervicis.

Hope this helps
6 0
3 years ago
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