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3 years ago

12

When a hydrophilic signaling molecule binds to the extracellular portion of a membrane receptor on a new cell, how does the "ins

ide" of the cell know that the interaction occurred? (choose the one best answer)?

1 answer:

KiRa [710]3 years ago

5 0

I don't know the meaning

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how does the word "haploid" apply to the gametes formed during meiosis. Why is it important that gametes are haploid instead of

liraira [26]

Meiosis only occurs in reproductive cells, as the goal is to create haploid gametes that will be used in fertilization. Meiosis is important to, but not the same as, sexual reproduction. Meiosis is necessary for sexual reproduction to occur, as it results in the formation of gametes sperm and eggs.

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3 years ago

In the process of photosynthesis, plants use carbon dioxide (CO2), water (H2O), and light energy to produce a sugar (C6H12O6) an

AlexFokin [52]

They are the same type just spit up

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3 years ago

Read 2 more answers

How does the size of the soil particles impact<br> the soil's permeability (movement of water)?

Usimov [2.4K]

Answer:

Water moves by gravity into the open pore spaces in the soil, and the size of the soil particles and their spacing determines how much water can flow in. Wide pore spacing at the soil surface increases the rate of water infiltration, so coarse soils have a higher infiltration rate than fine soils.

How does soil particle size affect permeability?

But permeability is a different thing. It increases as particle size increases. By definition, permeability is a MEASURE OF EASE with which fluids will flow though a porous rock, soil or sediment. ... That means capillarity increase as particle sizes decreases.

4 0

3 years ago

Describe the structure of the kidney and include structure of nephron as well

asambeis [7]

Answer:

Generally, mammals have a pair of bran-shaped kidneys. The mammalian kidney has 2 distinct regions, an outer renal cortex and inner renal medulla. Both regions are packed with microscopic excretory tubules, nephrons, and their associated blood vessels. Each nephron consists of a single long tubule and a ball of capillaries, known as glomerulus. The blind end of the tubule forms a cup-shaped swelling called Bowman’s capsule, that surround the glomerulus. From Bowman’s capsule, the filtrate passes through 3 regions of the nephron which are proximal tubule, the loop of Henle. A hairpin turns with a descending limb and an ascending limb and the distal tubule. The distal tubule empties into a collecting duct, which receives processed filtrate from many nephrons. The many collecting ducts empty into the renal pelvis, which is drained by ureter.

For the structure of nephron, each nephron is supplied with blood by an afferent arteriole, a branch of the renal artery that subdivides into the capillaries of the glomerulus. The capillaries converge as they leave the glomerulus, forming an efferent arteriole. It is surrounded by the Bowman’s capsule. The double-walled epithelial Bowman’s capsule is formed by the invagination of the blind end of the nephron. The glomerulus and Bowman’s capsule form the first region of the nephron and is known as the renal corpuscle or the Malpighian body. The capillary walls are composed of a single layer of endothelial cells with openings between them with a diameter 50-100nm. These cells are pressed up against basement membrane which completely envelops each capillary, separating the blood in the capillary from the lumen of Bowman’s capsule. The inner layer of the Bowman’s capsule is composed of a cell called podocytes which have arms that give off structures resembling tube-feet called foot processes or secondary processes. The secondary processes support the basement membrane and capillaries beneath it and gaps between the processes (slit pores) facilitate the process of filtration. The Malpighian body leads into the remainder of the tubule.

4 0

3 years ago

Plz help asap<br> Due today and well I’m confused

dusya [7]

The Circulatory & Respiratory Systems Part 2

Directions: Answer these 2 prompts in a complete paragraph with topic & conclusion sentences, and relevant detail sentences in the body.

Rubric

5 Points

Answer is a complete paragraph with all necessary relevant details & correct use of key vocabulary.

4 Points

Answer is a complete paragraph with most necessary details & some key vocabulary

3 Points

May not be a complete paragraph, but includes most necessary details

2 Points

Some necessary details described

1 Point

Answer includes some related details

0 Points

No answer given or answer is incorrect/off topic

Beginning with the Superior Vena Cava (SVC) & Inferior Vena Cava (IVC) and ending with the aorta, explain the path that blood takes through the heart and lungs before returning to the body.

The Blood leaves the heart through the pulmonic and into the pulmonary artery and then to the lungs. Blood also leaves the heart through the aortic valve, into the aorta and to the body. This process results in blood flowing through the heart,lungs and body...

Fact if the circulatory or respiratory system were to fail, the other would fail as well, leading to death without medical intervention. Explain why failure of the circulatory system would cause failure of the respiratory system & Explain why failure of the respiratory system would cause failure of the circulatory system.

Failure of the respiratory system would cause failure of the circulatory system because the respiratory system helps you breath and with you not breathing it would cause the circulatory system to fail because the breathing makes the blood flow through the circulatory system.

8 0

3 years ago