Q: Which equation best represents the Nernst equation for calculating the equilibrium potential ($$E) of an $$ion?

$$E = \frac{RT}{zF} \ln \left( \frac{[\text{ion outside}]}{[\text{ion inside}]} \right)$$

Question 1

Which of the following best describes the primary function of the cambium in vascular plants?

Accepted Answer

It is responsible for secondary growth, producing new xylem and phloem.

Question 2

Which tissue system in plants is primarily responsible for transporting water and dissolved minerals from roots to leaves?

Accepted Answer

Xylem

Question 3

Bulk flow in plants is most important for which of the following processes?

Accepted Answer

Movement of water and minerals through xylem

Question 4

Which equation best represents water potential ($$\Psi) in $$plant cells?

Accepted Answer

$$\Psi = \Psi_s + \Psi_p$$

Question 5

A plant cell has a solute potential ($$\Psi_s) of$$ $$-0.7$$ MPa and a pressure potential ($$\Psi_p) of$$ $$0.5$$ MPa. What is the total water potential ($$\Psi) of $$the cell?

Accepted Answer

$$-0.2$$ MPa

Question 6

Which of the following best explains the cohesion-tension theory of water transport in plants?

Accepted Answer

Water moves up the xylem due to evaporation from leaves, creating negative pressure that pulls water upward.

Question 7

Which of the following is NOT a function of the phloem in plants?

Accepted Answer

Transporting water and minerals from roots to leaves

Question 8

Which of the following cell types is most directly involved in the transport of sugars in the phloem?

Accepted Answer

Sieve tube elements

Question 9

Which anatomical organization is found in animals and is characterized by cells arranged in sheets that cover surfaces and line cavities?

Accepted Answer

Epithelial tissue

Question 10

Which of the following best describes the trade-off between surface area and volume in animal organs?

Accepted Answer

Increasing surface area relative to volume enhances exchange of materials with the environment.

Question 11

Which equation correctly represents the relationship between surface area ($$A) $$and volume ($$V) $$for a sphere?

Accepted Answer

$$A = 4 \pi r^2$, V$$ = \frac{4}{3} \pi $$r^3$$

Question 12

Which of the following is a real-life example of an adaptation that increases surface area for exchange in animals?

Accepted Answer

Flattening of fish gills

Question 13

Which organ system is primarily responsible for maintaining homeostasis of body fluids in animals?

Accepted Answer

Excretory system

Question 14

Which of the following best describes the difference between endotherms and ectotherms?

Accepted Answer

Endotherms generate heat internally to maintain body temperature, while ectotherms rely on external sources.

Question 15

Which of the following is the correct sequence of events in the generation of an action potential in a neuron?

Accepted Answer

Depolarization, repolarization, hyperpolarization

Question 16

Which equation best represents the Nernst equation for calculating the equilibrium potential ($$E) of an $$ion?

Accepted Answer

$$E = \frac{RT}{zF} \ln \left( \frac{[	ext{ion outside}]}{[	ext{ion inside}]} ight)$$

Question 17

Which sensory receptor type is responsible for detecting changes in temperature?

Accepted Answer

Thermoreceptors

Question 18

Which of the following best explains why leaves change color in autumn?

Accepted Answer

Chlorophyll breaks down, revealing other pigments such as carotenoids and anthocyanins.

Question 19

Which of the following is a function of statocysts in animals?

Accepted Answer

Maintaining equilibrium and balance

General Biology Study Notes: Plant Form & Function, Water Transport, Animal Form & Function, and Sensory Systems

Guida di studio - Domande di pratica

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