Question 1

Which of the following best describes the movement of water across a cell membrane when a plant cell is placed in a hypertonic solution?

Accepted Answer

Water moves out of the cell, causing it to shrink.

Question 2

A cell has a solute potential ($$\Psi_s) of$$ $$-0.7$$ MPa and a pressure potential ($$\Psi_p) of$$ $$0.3$$ MPa. What is the water potential ($$\Psi) of $$the cell?

Accepted Answer

$$\Psi = -0.4$$ MPa

Question 3

Which of the following is a primary function of the Casparian strip in plant roots?

Accepted Answer

Prevents uncontrolled movement of solutes into the vascular tissue.

Question 4

Which equation correctly represents the rate of diffusion according to Fick's Law?

Accepted Answer

$$J = D \frac{\Delta C}{\Delta x}$$

Question 5

A plant cell is placed in an isotonic solution. What will happen to the cell's turgor pressure?

Accepted Answer

Turgor pressure will decrease to zero.

Question 6

Which of the following best explains why increasing the size of a cell decreases its surface area to volume ratio?

Accepted Answer

Volume increases faster than surface area as size increases.

Question 7

Which of the following is NOT a characteristic of mitochondria that supports the endosymbiotic theory?

Accepted Answer

Mitochondria synthesize proteins using the host cell's ribosomes only.

Question 8

Which plant tissue is primarily responsible for photosynthesis?

Accepted Answer

Parenchyma

Question 9

Which of the following best describes the difference between symporters and antiporters in secondary active transport?

Accepted Answer

Symporters move two substances in the same direction; antiporters move them in opposite directions.

Question 10

Which of the following is a consequence of photosynthesis for the ecosystem?

Accepted Answer

Carbon is fixed and oxygen is evolved.

Question 11

Which of the following best describes the alternation of generations in plants?

Accepted Answer

A life cycle alternating between haploid gametophyte and diploid sporophyte stages.

Question 12

Which hormone is primarily responsible for closing stomata during drought conditions?

Accepted Answer

Abscisic acid (ABA)

Question 13

Which of the following is a limiting nutrient commonly found in agricultural soils?

Accepted Answer

Nitrogen

Question 14

Which of the following best describes the function of plasmodesmata in plant cells?

Accepted Answer

They allow direct cytoplasmic communication between adjacent cells.

Question 15

Which of the following is true regarding the sodium-potassium pump in animal cells?

Accepted Answer

It moves sodium ions out of the cell and potassium ions in, using ATP.

Question 16

Which of the following best explains why crop rotation is beneficial for soil health?

Accepted Answer

It allows different plants to fix different nutrients, reducing depletion.

Question 17

Which of the following is a real-world example of a parasitic plant and its method of obtaining nutrients?

Accepted Answer

Mistletoe absorbs water and nutrients directly from the host's xylem.

Question 18

Which of the following is a correct description of double fertilization in flowering plants?

Accepted Answer

One sperm fertilizes the egg, and another sperm fertilizes the central cell to form endosperm.

Question 19

Which section of a primary research paper typically contains the interpretation of results and their significance?

Accepted Answer

Discussion

BIO 201 Exam 2 Study Guide: Membranes, Eukaryotes, Plant Biology, and Bioskills

Guida di studio - Domande di pratica

Study guide - Flashcard