Biology Chapter: Cell Structures and Tissues
33 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

Which organelle is primarily responsible for producing proteins?

  • Chloroplast
  • Rough ER (correct)
  • Mitochondria
  • Lysosome

What is the primary function of chloroplasts in plant cells?

  • Synthesis of lipids
  • Protein transport
  • Cellular respiration
  • Photosynthesis (correct)

Which organelle is described as containing hydrolytic enzymes for breaking down substances?

  • Golgi apparatus
  • Nucleus
  • Mitochondria
  • Lysosome (correct)

What role do centrioles play within a cell?

<p>Facilitating cell division (B)</p> Signup and view all the answers

Which organelle functions as the 'powerhouse' of the cell?

<p>Mitochondria (B)</p> Signup and view all the answers

What is the primary role of chloroplasts in plant cells?

<p>Photosynthesis (D)</p> Signup and view all the answers

Which of the following statements is true about specialised cells?

<p>Most cells are specialised for a specific job. (C)</p> Signup and view all the answers

Which statement accurately describes tissues?

<p>Tissues consist of similar cells that perform a unified function. (D)</p> Signup and view all the answers

Which component is unique to plant cells but not found in animal cells?

<p>Cell wall (B)</p> Signup and view all the answers

How is the statement 'cells come from pre-existing cells' significant in biology?

<p>It emphasizes the continuity of life through cell division. (A)</p> Signup and view all the answers

What is the primary function of connective tissue in the human body?

<p>Connects and supports different parts of the body (B)</p> Signup and view all the answers

Where can epithelial tissue be primarily located in the human body?

<p>In the skin and lining of digestive organs (D)</p> Signup and view all the answers

Which type of tissue is responsible for the contraction that allows movements?

<p>Muscle tissue (D)</p> Signup and view all the answers

What role does nervous tissue play in the human body?

<p>Carries electrical messages between the brain and other parts (C)</p> Signup and view all the answers

Which of the following tissues is NOT a primary type of tissue in the human body?

<p>Cuboidal tissue (D)</p> Signup and view all the answers

Which organelle is primarily responsible for synthesizing proteins?

<p>Ribosome (B)</p> Signup and view all the answers

What is a key function of the Golgi Apparatus?

<p>Modification and packaging of proteins (C)</p> Signup and view all the answers

Which characteristic is unique to mitochondria compared to other organelles?

<p>Double membrane structure (A), Site of cellular respiration (B)</p> Signup and view all the answers

What do lysosomes primarily contain?

<p>Digestive enzymes (B)</p> Signup and view all the answers

Where are ribosomes produced within the cell?

<p>Nucleolus (A)</p> Signup and view all the answers

What is the primary role of the cell membrane?

<p>To control movement of substances in and out of cells (B)</p> Signup and view all the answers

Which of the following statements about the nucleus is true?

<p>It is the control center of the cell (C)</p> Signup and view all the answers

What distinguishes rough endoplasmic reticulum (Rough ER) from smooth endoplasmic reticulum (Smooth ER)?

<p>Rough ER has ribosomes on its surface, while Smooth ER does not (B)</p> Signup and view all the answers

What form does DNA take when packaged within the nucleus?

<p>Chromatin (D)</p> Signup and view all the answers

How many nuclei are typically found in a single cell?

<p>One (D)</p> Signup and view all the answers

What is the primary function of the mitochondria in a cell?

<p>Producing chemical energy in the form of ATP (D)</p> Signup and view all the answers

Which cell component is primarily responsible for protein synthesis?

<p>Ribosomes (C)</p> Signup and view all the answers

Which organelle acts like a cellular post office by sorting and dispatching proteins?

<p>Golgi Apparatus (C)</p> Signup and view all the answers

What is the main role of lysosomes within a cell?

<p>Recycling waste materials and breaking down unwanted components (C)</p> Signup and view all the answers

Which of the following accurately describes the rough endoplasmic reticulum (RER)?

<p>Involved in the production and transport of proteins (A)</p> Signup and view all the answers

What features distinguish chromosomes within the cell?

<p>Composed of DNA wrapped around protein scaffolds (A)</p> Signup and view all the answers

Which cell component is characterized as a network of flattened membranes and plays a role in lipid production?

<p>Smooth Endoplasmic Reticulum (SER) (C)</p> Signup and view all the answers

Which structure is most directly involved in mitosis and positioning the nucleus?

<p>Centrioles (D)</p> Signup and view all the answers

Flashcards

What is the function of connective tissue?

Connects and supports different parts of the body.

Where can you find connective tissue?

Bone, blood, cartilage, and under the skin.

What is the function of muscle tissue?

Contracts and shortens to allow movement of the body.

Where can you find muscle tissue?

Skeletal muscles, heart, and digestive organs.

Signup and view all the flashcards

What is the function of epithelial tissue?

Covers the surfaces of the body.

Signup and view all the flashcards

What makes up all living things?

All living things are made up of cells. Cells are the basic building blocks of life.

Signup and view all the flashcards

Where do new cells come from?

New cells are always formed from existing cells.

Signup and view all the flashcards

What is a chloroplast?

A membrane-bound organelle found in plant cells, responsible for photosynthesis.

Signup and view all the flashcards

What is a vacuole?

A large, fluid-filled sac in plant cells that stores water, nutrients, and waste.

Signup and view all the flashcards

What is a cell wall?

A rigid outer layer that surrounds plant cells, providing structure and support.

Signup and view all the flashcards

What is the function of mitochondria?

Site where cellular respiration occurs, providing the cell with energy.

Signup and view all the flashcards

What are ribosomes and what do they do?

Small, round structures responsible for producing proteins, essential for cell functions.

Signup and view all the flashcards

What is the function of the Rough ER?

A network of channels with ribosomes attached, involved in transporting proteins throughout the cell.

Signup and view all the flashcards

What is the function of the Golgi apparatus?

Stack of flattened cavities involved in modifying, packaging, and sorting proteins and lipids.

Signup and view all the flashcards

What is the function of the nucleus?

A large, round structure containing DNA, responsible for controlling cell activities and carrying genetic information.

Signup and view all the flashcards

What does the cell membrane do?

The cell membrane acts as a barrier, controlling which substances enter and exit the cell. It's like a bouncer at a club, deciding who gets in!

Signup and view all the flashcards

What is the nucleus?

The control center of the cell. It contains DNA, which directs the cell's activities.

Signup and view all the flashcards

What does the rough ER do?

The rough ER is involved in protein synthesis and transport. It's like a factory building proteins and shipping them out.

Signup and view all the flashcards

What does the smooth ER do?

The smooth ER is involved in the synthesis and transport of lipids. It's like a factory building fats and oils and shipping them out.

Signup and view all the flashcards

What is the endoplasmic reticulum?

The highway of the cell. It's a network of membranes that helps with transport of substances within the cell.

Signup and view all the flashcards

What is the Golgi apparatus?

A stack of flattened cavities (cisternae) that stores, modifies, and packages proteins. Proteins are often modified by adding carbohydrates, forming glycoproteins. These molecules are then transported by vesicles.

Signup and view all the flashcards

What is the function of ribosomes?

The site of protein synthesis. Ribosomes are either attached to the rough endoplasmic reticulum or float freely in the cytosol. They are produced in the nucleolus.

Signup and view all the flashcards

What is the role of mitochondria?

Known as the powerhouse of the cell, mitochondria are responsible for cellular respiration, which releases energy for the cell. They are bound by a double membrane and have their own DNA.

Signup and view all the flashcards

What are lysosomes and what do they do?

Lysosomes are essentially the 'dustbins' of the cell. They contain digestive enzymes that break down unwanted substances like chemicals, toxins, old organelles, and even entire cells.

Signup and view all the flashcards

What is the role of the rough endoplasmic reticulum (rough ER)?

A network of channels studded with ribosomes, the rough endoplasmic reticulum (rough ER) is involved in transporting proteins throughout the cell. It's essentially the cell's internal transportation system.

Signup and view all the flashcards

What is the function of the Rough Endoplasmic Reticulum (RER)?

A network of membranes involved in protein production, folding, and transport.

Signup and view all the flashcards

What is the function of lysosomes?

Round organelles containing digestive enzymes, breaking down waste and intruders.

Signup and view all the flashcards

What is the function of centrioles?

Pairs of cylindrical organelles involved in cell division and positioning the nucleus.

Signup and view all the flashcards

What are chromosomes?

Thread-like structures carrying genetic information in the form of genes.

Signup and view all the flashcards

More Like This

Use Quizgecko on...
Browser
Open
Browser
Browser