Cell Structure and Classification
30 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

All organisms are composed of structural and functional units of life called 'atoms'.

False

The human body is made up of about 50 trillion cells.

False

Unicellular organisms include plants and animals.

False

Cells vary in size but not in structure as they all perform the same functions.

<p>False</p> Signup and view all the answers

Modern cell theory states that hereditary information is passed on from cell to cell during cell division.

<p>True</p> Signup and view all the answers

According to modern cell theory, all cells have different chemical compositions.

<p>False</p> Signup and view all the answers

Most cells are visible to the naked eye without the use of a microscope.

<p>False</p> Signup and view all the answers

A cell must have a low surface area to volume ratio for efficient nutrient intake.

<p>False</p> Signup and view all the answers

The size of a human RBC is around 5 nanometers.

<p>False</p> Signup and view all the answers

The largest cell in the human body is the sperm cell.

<p>False</p> Signup and view all the answers

Nerve cells have short extensions (axons and dendrites) to help pass signals quickly through the body.

<p>False</p> Signup and view all the answers

Eukaryotic cells do not contain any internal structures called organelles.

<p>False</p> Signup and view all the answers

The DNA in prokaryotic cells is coiled up in a region of the cytoplasm called the nucleoid.

<p>True</p> Signup and view all the answers

Prokaryotic cells have a true nucleus.

<p>False</p> Signup and view all the answers

Most bacterial cell walls are made out of cellulose.

<p>False</p> Signup and view all the answers

The cell wall of bacterial cells assists in retaining moisture.

<p>True</p> Signup and view all the answers

The plasma membrane surrounds the cell's cytoplasm.

<p>True</p> Signup and view all the answers

Cytoplasm is composed mainly of lipids.

<p>False</p> Signup and view all the answers

Peripheral proteins are primarily involved in translocating substances across the membrane.

<p>False</p> Signup and view all the answers

Integral proteins are only attached to the internal surface of the membrane.

<p>False</p> Signup and view all the answers

The cytoplasm is a colourless gel-like fluid that fills the area between the cell membrane and the nucleus.

<p>True</p> Signup and view all the answers

Fatty acids, amino acids, and carbohydrates are present in the cytosol.

<p>True</p> Signup and view all the answers

Cytosol makes up approximately 50% of a cell's total volume.

<p>False</p> Signup and view all the answers

Chemical reactions in prokaryotes primarily occur in the nucleus.

<p>False</p> Signup and view all the answers

The nucleus is often referred to as the 'powerhouse' of the cell.

<p>False</p> Signup and view all the answers

Red blood cells have multiple nuclei.

<p>False</p> Signup and view all the answers

The outer membrane of the nucleus is called the nuclear envelope.

<p>True</p> Signup and view all the answers

The nucleoplasm is a solid substance that supports the nucleus.

<p>False</p> Signup and view all the answers

Chromatin is a small molecule that composes the genetic material of a cell.

<p>False</p> Signup and view all the answers

The nucleolus is the smallest structure found in the nucleus.

<p>False</p> Signup and view all the answers

More Like This

Structure of Bacterial Cells
99 questions

Structure of Bacterial Cells

TrustworthyObsidian1672 avatar
TrustworthyObsidian1672
Cell Biology and Organism Classification Quiz
5 questions
Use Quizgecko on...
Browser
Browser