Biology Chapter: Plant and Animal Cells

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Questions and Answers

What is the total magnification when using a 10x ocular lens and a 100x objective lens?

600x
700x
1500x
1000x (correct)

What is the field of view (FOV) at 300x if the FOV at 40x is 0.55 mm?

220 μm
110 μm
73 μm (correct)
30 μm

Which cell structure is crucial for water transport from roots to leaves in plants?

Cortex cells
Epidermal tissue cells
Xylem tissue cells (correct)
Phloem tissue cells

What happens to an animal cell when placed in a hypertonic solution?

It shrinks as water moves out. (D) Signup and view all the answers

How is root pressure created in plants?

When water flows into the root system diluting solutes. (C) Signup and view all the answers

What would occur if plants lacked auxins?

Plants would not respond to gravity. (B) Signup and view all the answers

What is an expected effect of placing a plant cell in isotonic solution?

Cell will remain unchanged. (B) Signup and view all the answers

Which adaptation helps cacti survive in arid environments?

Modified leaves as spines. (A) Signup and view all the answers

What is the greatest magnification achieved by a Transmission Electron Microscope (TEM)?

100,000 (B) Signup and view all the answers

What type of image does a Scanning Electron Microscope (SEM) produce?

Black and white images with surface detail (B) Signup and view all the answers

Which method is used for focusing in a Transmission Light Microscope?

Ground glass lenses (B) Signup and view all the answers

What is a major disadvantage of using a Transmission Electron Microscope?

Images are difficult to interpret (D) Signup and view all the answers

What is a key advantage of Scanning Electron Microscopes over Transmission Electron Microscopes?

Production of 3-dimensional images (B) Signup and view all the answers

Which microscope uses electrons passing through the material to produce an image?

Transmission Electron Microscope (C) Signup and view all the answers

When using a Scanning Electron Microscope, what is required of the specimen?

It must be dried and dead (D) Signup and view all the answers

Which of the following types of microscopes provides color images?

Transmission Light Microscope (B) Signup and view all the answers

What is a significant quality of the images produced by a Transmission Electron Microscope?

They are black and white and have high resolving power (A) Signup and view all the answers

Which microscope is most suitable for studying the internal structure of materials?

Transmission Electron Microscope (C) Signup and view all the answers

What term describes the energy stored in a material that is bent, compressed, or stretched and returns to its original shape when released?

Elastic potential energy (A) Signup and view all the answers

Which of the following terms refers to the energy stored in the bonds that hold atoms together?

Chemical energy (B) Signup and view all the answers

What is the term for the energy stored in the inner core of an atom?

Nuclear energy (C) Signup and view all the answers

Which term best describes the length of a path from one point to another?

Distance (D) Signup and view all the answers

What term defines the location of an object relative to a particular reference point?

Position (C) Signup and view all the answers

Which term is used to represent the size or amount of something?

Magnitude (B) Signup and view all the answers

What term refers to the displacement of an object in a unit of time, such as one second?

Speed (C) Signup and view all the answers

Which term accurately reflects the distance traveled in a particular unit of time?

Average speed (D) Signup and view all the answers

Which of the following statements about kinetic energy is not true?

An object can have kinetic energy even if it is not in motion. (A), Kinetic energy is always greater than potential energy in a system. (D) Signup and view all the answers

What happens to the potential energy of a system when it is transformed into kinetic energy?

Some is lost to friction. (D) Signup and view all the answers

If a race car has a kinetic energy of $9.40 \times 10^3$ J and races at an average speed of 9.50 m/s, what is the mass of the car?

208 kg (D) Signup and view all the answers

Which of the following is true about the motion of a pendulum at different points in its swing?

Energy is conserved between potential and kinetic forms at all points. (A), At the bottom, all energy is kinetic. (B) Signup and view all the answers

In the context of electric motors, what does a 73% efficiency rating indicate?

73% of the input energy is converted to useful work. (A), 73% of the input energy is converted to kinetic energy. (C) Signup and view all the answers

Which statement regarding energy transformation in a motor is incorrect?

All input energy is used for mechanical work. (B) Signup and view all the answers

In the context of energy and work, which statement is generally not true?

Work done on an object always increases its kinetic energy. (D) Signup and view all the answers

What aspect is preserved when potential energy is converted into kinetic energy?

Total mechanical energy in an ideal system. (D) Signup and view all the answers

Which of the following is NOT a reason for a plant to sense its orientation?

To ensure the plant transports nutrients correctly (A) Signup and view all the answers

What was the name given to the chemical that stimulates growth in plant stem tips?

Auxin (D) Signup and view all the answers

Which quantity is classified as a scalar quantity?

Speed (A) Signup and view all the answers

Which statement about the relationship of distance and displacement is true?

Distance can equal displacement under certain conditions (D) Signup and view all the answers

What does the symbol ∆ (delta) signify in mathematical operations?

Subtraction to determine difference (D) Signup and view all the answers

When expressed in two significant digits, what is the correct representation of the value 1275?

1.3 x 10^3 (B) Signup and view all the answers

How many significant digits are present in the number 10.060?

5 (C) Signup and view all the answers

What is the total distance traveled by Galileo in one minute at a speed of 39 m/s?

2.34 x $10^3$ m (C) Signup and view all the answers

From t=1 s until t=2 s, the car is best described as which of the following?

Travelling at uniform speed (D) Signup and view all the answers

What are the distances the car traveled from t=0 s to 1 s and from t=1 s to 2 s?

5.0 m and 10.0 m (D) Signup and view all the answers

If Gretzky shoots a puck at 90 km/h from 15 m away, how long does it take to reach the net?

0.60 s (A) Signup and view all the answers

If the Sun Spider runs between two fig trees 3.6 m apart at maximum speed, what is the shortest time possible?

0.23 s (B) Signup and view all the answers

In a velocity-time graph, which graph corresponds to a constant speed?

B (A) Signup and view all the answers

Which statement about a position versus time graph is incorrect?

A downward slope indicates that the object was slowing down. (B) Signup and view all the answers

To lift a bag of sugar weighing 4.54 kg at constant speed, what force is necessary?

44.5 N (C) Signup and view all the answers

Flashcards

Light Microscope

A type of microscope that uses light to illuminate the specimen and lenses to magnify the image.

Electron Microscope

A type of microscope that uses a beam of electrons to illuminate the specimen and magnets to focus the beam.

Transmission Electron Microscope (TEM)

An electron microscope that uses transmitted electrons to create an image of the internal structure of a specimen.

Scanning Electron Microscope (SEM)

An electron microscope that uses reflected electrons to create a 3-dimensional image of the surface of a specimen.