Biology

Question 1

What is the basic unit of life?

Answer 1

The cell.

Question 2

True or False: All living organisms are made up of cells.

Answer 2

True.

Question 3

Fill in the blank: The process by which plants convert sunlight into energy is called ___.

Answer 3

photosynthesis.

Question 4

What is the primary function of DNA?

Answer 4

To store and transmit genetic information.

Question 5

Multiple choice: Which of the following is NOT a macromolecule? A) Carbohydrates B) Lipids C) Salt D) Proteins

Answer 5

C) Salt.

Question 6

What type of bond holds the two strands of DNA together?

Answer 6

Hydrogen bonds.

Question 7

True or False: Prokaryotic cells have a nucleus.

Answer 7

False.

Question 8

What is the function of ribosomes in a cell?

Answer 8

To synthesize proteins.

Question 9

Fill in the blank: The ___ is the powerhouse of the cell.

Answer 9

mitochondria.

Question 10

Multiple choice: Which organelle is responsible for photosynthesis? A) Mitochondria B) Chloroplast C) Nucleus D) Ribosome

Answer 10

B) Chloroplast.

Question 11

What is the role of enzymes in biological reactions?

Answer 11

To speed up the reactions by lowering the activation energy.

Question 12

True or False: All enzymes are proteins.

Answer 12

True.

Question 13

What is the process of cellular respiration?

Answer 13

The process by which cells convert glucose and oxygen into energy, carbon dioxide, and water.

Question 14

Fill in the blank: Genetic information is passed from parent to offspring through ___.

Answer 14

DNA.

Question 15

Multiple choice: Which phase of mitosis involves the separation of sister chromatids? A) Prophase B) Metaphase C) Anaphase D) Telophase

Answer 15

C) Anaphase.

Question 16

What is the function of the cell membrane?

Answer 16

To protect the cell and regulate the movement of substances in and out.

Question 17

True or False: Osmosis is the movement of water across a semipermeable membrane.

Answer 17

True.

Question 18

Fill in the blank: The ___ is responsible for controlling cell activities and contains genetic material.

Answer 18

nucleus.

Question 19

What is the difference between mitosis and meiosis?

Answer 19

Mitosis results in two identical daughter cells, while meiosis results in four genetically diverse gametes.

Question 20

Multiple choice: Which of the following is a type of RNA? A) mRNA B) tRNA C) rRNA D) All of the above

Answer 20

D) All of the above.

Question 21

What is homeostasis?

Answer 21

The maintenance of a stable internal environment in an organism.

Question 22

True or False: Evolution explains the diversity of life on Earth.

Answer 22

True.

Question 23

Fill in the blank: The theory of ___ describes how species change over time through natural selection.

Answer 23

evolution.

Question 24

What is a gene?

Answer 24

A segment of DNA that codes for a specific protein or trait.

Question 25

Multiple choice: Which process involves the transfer of genetic material between bacteria? A) Transformation B) Transduction C) Conjugation D) All of the above

Answer 25

D) All of the above.

Question 26

What are homologous chromosomes?

Answer 26

Chromosomes that are similar in shape, size, and genetic content, one inherited from each parent.

Question 27

True or False: The genetic makeup of an organism is called its phenotype.

Answer 27

False.

Question 28

Fill in the blank: The observable traits of an organism are known as its ___.

Answer 28

phenotype.

Question 29

What is the function of the Golgi apparatus?

Answer 29

To modify, sort, and package proteins for secretion or use within the cell.

Question 30

Multiple choice: Which of the following processes creates ATP? A) Photosynthesis B) Cellular respiration C) Fermentation D) All of the above

Answer 30

D) All of the above.

Question 31

What is the role of chlorophyll in photosynthesis?

Answer 31

To absorb light energy, primarily from the sun.

Question 32

True or False: All living organisms reproduce.

Answer 32

True.

Question 33

Fill in the blank: The basic building blocks of proteins are ___.

Answer 33

amino acids.

Question 34

What is a mutation?

Answer 34

A change in the DNA sequence that can lead to changes in protein function.

Question 35

Multiple choice: Which type of cell division produces gametes? A) Mitosis B) Meiosis C) Binary fission D) Budding

Answer 35

B) Meiosis.

Question 36

What is the function of the endoplasmic reticulum?

Answer 36

To synthesize proteins and lipids and transport them within the cell.

Question 37

True or False: Natural selection is a mechanism of evolution.

Answer 37

True.

Question 38

Fill in the blank: The ___ is the part of the cell responsible for packaging and transporting materials.

Answer 38

Golgi apparatus.

Question 39

What is the function of the lysosome?

Answer 39

To digest and break down waste materials and cellular debris.

Question 40

Multiple choice: Which of the following is a prokaryotic organism? A) Bacteria B) Fungi C) Plants D) Animals

Answer 40

A) Bacteria.

Question 41

What is the primary component of the cell wall in plants?

Answer 41

Cellulose.

Question 42

True or False: Viruses are considered living organisms.

Answer 42

False.

Question 43

Fill in the blank: The process by which DNA is copied to RNA is called ___.

Answer 43

transcription.

Question 44

What is the role of the plasma membrane?

Answer 44

To regulate what enters and exits the cell and maintain homeostasis.

Question 45

Multiple choice: Which scientist is known for the theory of natural selection? A) Gregor Mendel B) Charles Darwin C) Louis Pasteur D) Watson and Crick

Answer 45

B) Charles Darwin.

Question 46

What is an ecosystem?

Answer 46

A community of living organisms interacting with each other and their physical environment.

Question 47

True or False: Biodiversity refers to the variety of life in a particular habitat or ecosystem.

Answer 47

True.