Which structure fuses to form a diploid zygote during sexual reproduction?

(AKS 3b / DOK 2) Four students were discussing how surface area to volume ratio limits cell size. Which student claim below woul

3241004551 [841]

Answer:

D

Explanation:

Let's assume there's two cuboidal cells, cell A and B

Cell A has a side of x

Let's find the surface area of cell A

SA = 6(L²)

SA = 6(x²)

SA = 6x²

Let's find the volume of cell A

V = L³

V = (x)³

V = x³

Cell B has a side of 2x

Now let's find the surface area of cell B

SA = 6(L²)

SA = 6(2x)²

SA = 24x²

Let's find the volume of cell B

V = (L)³

V = (2x)³

V = 8x³

As you can see, just by doubling the side length, the ratio between Surface Area and Volume went from 6/x to 3/x (the x² in the numerator and the x³ in the denominator cancel out forming 1/x)

The ratio decreased, therefore, D is the statement that makes sense

6 0

3 years ago

When blood glucose levels are high View Available Hint(s) When blood glucose levels are high The pancreas releases insulin. The

arsen [322]

Answer:

<h2>The pancreas releases insulin.</h2>

Explanation:

Pancreas release both insulin as well as glucagon, but there release depends on different glucose levels in bloodstream. When blood glucose concentration increases, in response to it Insulin is released by the beta cells in the islets of Langerhans.

Role of insulin: i) it lower glucose levels in the bloodstream, ii) it also promote the storage of glucose in muscle, liver and other parts o the body .

While alpha cells in the islets of Langerhans produce glucagon when glucose concentration decreases in the blood.

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3 years ago

Α-adrenergic receptors have a higher affinity for norepinephrine than for epinephrine. Β-adrenergic receptors have a higher affi

Molodets [167]

Answer:

Receptors are highly specific and only have high affinity for those ligands for whom they are specific.

Explanation:

Receptors are proteins that receive a stimulus or bind a ligand and mediate effects via receptor effector system.

Receptors are macromolecules that are highly specific.

The affinity between the ligand and the receptors is determind by the disassociation constant Kd.

The receptors produce maximun effect when an appropriate specific stimulus is present.

Different recptors types are present for different ligands.

For example, muscrinic receptors are specific for acetycholine and adrenergic receptors are specific for adrenaline/nor adrenaline.

It is important to know the specificity so that the body remains in a state of balance.

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3 years ago

A group of scientists is studying the fossils of three different hominids. They find that the DNA of the first hominid is more s

oksano4ka [1.4K]

"The first and second hominids were able to mate and produce offspring, but the first and third hominids could not." <span>Although that might be the case, it might also not. "More similar" needn't be 'similar enough' (disregarding the fact that all homonid specimens involved could happen to share the same sex). </span>

<span>"The first and second hominids shared the same geographic location, while the third was isolated." </span>

<span>That information would be revealed by the geographic location they came from. </span>

<span>"The first and second hominids most likely became extinct before the third hominid species." </span>

<span>Perhaps or perhaps not. As ancestral lineages can survive for longer than descendant lineages, it needn't apply. Still, I suppose the non-existent law of averages provides some sort of justification for the use of "Most likely". </span>

<span>"The first and second hominids have a more recent common ancestor than the first and third hominids." </span>

<span>Assuming these are all in the same neat lineage, then the most recent common ancestor of the first and second is also the most recent common ancestor of the first and the third.</span>

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3 years ago

Read 2 more answers

In 1996, the World Trade Organization (WTO) ruled that the U.S. Environmental Protection Agency (EPA) regulation calling for cle

lions [1.4K]

Option A The revision probably decreased world trade because gasoline that previously couldn’t be sold in the United States had to be sold in other countries.

<h3>What part does the WTO play in preserving the environment?</h3>

Through its goal of promoting sustainable development and preventing protectionism, its regulations and enforcement procedures, and its participation in other WTO bodies, the WTO helps to conserve and preserve the environment.

<h3>What environmental harm is the WTO causing?</h3>

One of the main causes of deforestation, soil erosion, excessive water consumption, marine pollution, and finally species extinction is the increase in commerce in natural resources.

<h3>What does the 1995 establishment of the WTO mean?</h3>

The sole international body that has been dealing with international trade regulations is called as the World Trade Organization (WTO). The WTO agreements, that were negotiated, signed, and then ratified by the majority of the world’s trading states, form the foundation of the WTO.

To know about the WTO visit:

brainly.com/question/14591540

#SPJ13

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1 year ago