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3 years ago

What is the function of tendril? How is the tendril of pea different from that of pumpkin?

Biology

1 answer:

storchak [24]3 years ago

5 0

Explanation:

a tendril is a specialized stem ,leaf used by climbing trees or plants for support.

a pea tendril - is way smaller than a pumpkin tendril it's thread like structure are narrowly small..

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Under normal conditions glomerular filtration depends on three main pressures. What pressures is a pressure that favors the proc

vladimir2022 [97]

Answer:

Glomerular Hydrostatic pressure .

Explanation:

The basic function of the kidney is the formation of urine for elimination through the urinary excretory system. Two different processes determine this formation: the filtration of fluid through the glomerular capillaries into Bowman's space and the modification of the volume and composition of the glomerular filtrate in the renal tubules. The fluid passes from the glomerular capillaries to Bowman's capsule due to the existence of a pressure gradient between these two areas. This process is favored by two structural characteristics that make renal corpuscles particularly effective filtration membranes: glomerular capillaries have a much higher number of pores than other capillaries, and the efferent arteriole has a smaller diameter than the afferent arteriole, causing greater resistance to outflow of blood flow from the glomerulus and increasing glomerular hydrostatic pressure. Increased glomerular hydrostatic pressure (due to increased blood flow through the glomerulus) increases filtration, while increases in Bowman's hydrostatic pressure or urinary space (which remains constant, unless there is disease at that level, usually due to fibrosis) and plasma P. oncotic (determined by proteins, which tend to "drag" plasma into the glomerulus) decrease filtering. Resulting in a filtering pressure of 10 mmHg.

8 0

3 years ago

How is enthalpy used to predict whether a reaction is endothermic or exothermic?

Radda [10]

Answer:

$329.48 KJ/mol$ heat is released by the combustion of $2 mol$ of methane

Explanation:

The value of enthalpy determines whether the reaction is exothermic or endothermic. If the enthalpy change is positive, then the reaction is endothermic (heat or energy released) and if the enthalpy change is negative then the reaction is exothermic (heat or energy absorbed).

$2CH_4(g)+4O_2(g) => 2CO_2(g)+4H_2O(g)$

$\Delta H \ reaction=[ 2(\Delta HfCO_2)+ 4(\Delta HfH_2O)]-[2(\Delta HfCH_4)+4(\Delta HfO_2)]$

= $2 ( -(393.5 KJ)/mol)-[2( -74.6 KJ/mol)+4(-241.82 KJ/mol)]$

$= -787 KJ/mol-[ -149.2 KJ/mol-967.28 KJ/mol]$

$= -787 KJ/mol+1116.48 KJ/mol$

$=329.48 KJ/mol$

In this question, the enthalpy of formation has positive value and hence the reaction is endothermic in which the heat is released.

3 0

3 years ago

A gene is a segment of mrna

Viefleur [7K]

Answer:

An RNA single-stranded molecule that is complementary to one of a gene's DNA strands, to be precise.

Explanation:

DNA sequences or segments code for proteins or molecules with defined functions, called genes.

7 0

3 years ago

Differentiate between respiration in the presence and absence of oxygen

AleksAgata [21]

Answer:

breakdown of glucose in the absence of oxygen to produce energy is called as anaerobic respiration. Aerobic respiration occurs in the cytoplasm to mitochondria, while anaerobic respiration occurs in the cytoplasm only.

Explanation:

7 0

3 years ago

Muscle contraction that results in a change in joint angle is called

Alex_Xolod [135]

Muscle contraction that results in a change in joint angle is called concentric contraction.
This contraction occurs when enough force that can overcome the resistance applied is developed by the muscle where this force developed is larger than the force of the resistance applied.

6 0

3 years ago