Biology Quiz: Microscopes and Cell Theory

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Which magnification is used to see an object under the microscope?

100x magnification

40x magnification (correct)

400x magnification

200x magnification

At which magnification can you see details such as a nucleus?

400x magnification (correct)

200x magnification

40x magnification

100x magnification

What is the function of the fine adjustment knob on a microscope?

To quickly locate an object

To change the magnification

To regulate the light

To precisely adjust the focus (correct)

Which microscope structure is responsible for regulating light?

Diaphragm Signup and view all the answers

How do objects appear under a microscope?

Upside down and inverted Signup and view all the answers

Who was the first scientist to see a cell?

Hooke Signup and view all the answers

Which of the following is NOT one of the three parts of the cell theory?

Cells can arise spontaneously. Signup and view all the answers

What is the primary function of the cell membrane?

Acts as a barrier and regulates what enters and leaves the cell Signup and view all the answers

What distinguishes prokaryotes from eukaryotes?

Eukaryotes have membrane-bound organelles Signup and view all the answers

Which organelle is primarily involved in protein synthesis?

Ribosome Signup and view all the answers

What is the main function of the Golgi body?

Packages, modifies, and sorts proteins Signup and view all the answers

What are the hydrophobic tails of phospholipids repelled by?

Water Signup and view all the answers

Which of the following is an example of a eukaryote?

Fungi Signup and view all the answers

What role do proteins play in the cell membrane?

Recognition and transport of materials Signup and view all the answers

What does it mean when a membrane is described as 'selectively permeable'?

Specific molecules can pass while others cannot Signup and view all the answers

Why is the bilayer structure of the cell membrane important?

It helps control shape and regulate the cell Signup and view all the answers

What happens to the surface area to volume ratio as a cell grows larger?

It decreases Signup and view all the answers

What is a structure found in animal cells but not in plant cells?

Lysosomes Signup and view all the answers

What does the term 'hydrophobic' refer to?

Substances that repel water Signup and view all the answers

What is the function of the fluid mosaic model in the cell membrane?

To allow fluidity and rapid diffusion Signup and view all the answers

How do cells maintain homeostasis with respect to their membranes?

Through selective permeability of the membrane Signup and view all the answers

What direction do materials move during osmosis?

High to Low concentration Signup and view all the answers

Which method of movement requires energy?

Active transport Signup and view all the answers

What process involves the movement of materials from a low concentration to a high concentration using energy?

Active transport Signup and view all the answers

In which solution would a cell experience swelling?

Hypotonic solution Signup and view all the answers

What is the result when water moves into cells from a hypotonic solution?

Cells swell and can burst Signup and view all the answers

What is the role of carrier proteins in facilitated diffusion?

To assist large molecules across the cell membrane Signup and view all the answers

Why did living yeast cells remain colorless in red dye initially?

The membrane is impermeable to the red dye Signup and view all the answers

What effect does drinking ocean water have on cells?

Water moves out of cells Signup and view all the answers

Which statement best describes the movement of large particles, such as sugars, across a membrane?

They use facilitated diffusion Signup and view all the answers

What is the primary characteristic of a hypertonic solution?

Higher concentration of solute outside the cell Signup and view all the answers

What happens to strawberries when sugar is sprinkled on them?

Water moves out of the strawberries Signup and view all the answers

What occurs during active transport?

Substances move against their concentration gradient Signup and view all the answers

What determines whether a cell will be in a state of homeostasis?

The cell's ability to exchange materials Signup and view all the answers

Which solution is hypertonic?

10 grams of sugar in 100 ml water Signup and view all the answers

What occurs when equilibrium is reached for a cell?

Concentration of molecules is equal on both sides. Signup and view all the answers

In which direction will water move if placed in a chamber with higher solute concentration?

Into the chamber with higher solute concentration. Signup and view all the answers

How does facilitated diffusion differ from simple diffusion?

It occurs through carrier proteins. Signup and view all the answers

What will happen to an animal cell in a hypotonic solution?

The cell will swell and possibly burst. Signup and view all the answers

What effect does placing celery in salt water have?

The celery will wilt and lose water. Signup and view all the answers

How does active transport differ from diffusion?

Active transport requires energy and moves against the gradient. Signup and view all the answers

What happens to an animal cell with 3% salt placed in a 5% salt solution?

The cell shrinks as water leaves. Signup and view all the answers

What happens to a plant cell when placed in a hypertonic solution?

It shrinks and the membrane pulls away from the cell wall Signup and view all the answers

What is turgor pressure a result of?

Water entering the cell in a hypotonic solution Signup and view all the answers

What is phagocytosis responsible for transporting?

Food particles Signup and view all the answers

What occurs in an isotonic solution?

Water moves in and out of the cell equally Signup and view all the answers

What is the outcome of placing an animal cell into a hypotonic solution?

The cell swells and might burst Signup and view all the answers

What process is used for the movement of liquids into a cell?

Pinocytosis Signup and view all the answers

How does endocytosis differ from exocytosis?

Endocytosis involves engulfing materials while exocytosis removes them Signup and view all the answers

What describes the phenomenon of plasmolysis in plant cells?

The cell membrane detaches from the cell wall due to water loss Signup and view all the answers