Biology

Question 1

What is the basic unit of life?

Answer 1

The cell.

Question 2

True or False: Prokaryotic cells have a nucleus.

Answer 2

False.

Question 3

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

Answer 3

photosynthesis.

Question 4

What organelle is responsible for energy production in eukaryotic cells?

Answer 4

Mitochondria.

Question 5

What is the function of ribosomes?

Answer 5

Protein synthesis.

Question 6

Which molecule carries genetic information?

Answer 6

DNA.

Question 7

Multiple Choice: Which of the following is NOT a part of the cell theory? A) All living organisms are made of cells B) Cells are the basic unit of life C) All cells arise from pre-existing cells D) Cells can spontaneously generate

Answer 7

D) Cells can spontaneously generate.

Question 8

What is osmosis?

Answer 8

The diffusion of water across a selectively permeable membrane.

Question 9

True or False: Enzymes are consumed in chemical reactions.

Answer 9

False.

Question 10

Fill in the blank: The molecule that acts as the energy currency in cells is _______.

Answer 10

ATP.

Question 11

What are the four main macromolecules essential for life?

Answer 11

Carbohydrates, lipids, proteins, and nucleic acids.

Question 12

Multiple Choice: Which of the following processes does NOT require oxygen? A) Aerobic respiration B) Anaerobic respiration C) Photosynthesis D) Krebs cycle

Answer 12

B) Anaerobic respiration.

Question 13

What is the role of chlorophyll in photosynthesis?

Answer 13

To capture light energy.

Question 14

True or False: The pH level affects enzyme activity.

Answer 14

True.

Question 15

Fill in the blank: The structure that controls the movement of substances in and out of the cell is called the _______.

Answer 15

cell membrane.

Question 16

What is the primary function of the smooth endoplasmic reticulum?

Answer 16

Lipid synthesis.

Question 17

Multiple Choice: Which phase of the cell cycle is characterized by DNA replication? A) G1 phase B) S phase C) G2 phase D) M phase

Answer 17

B) S phase.

Question 18

What is the function of the Golgi apparatus?

Answer 18

Modification and packaging of proteins.

Question 19

True or False: All cells are unicellular.

Answer 19

False.

Question 20

Fill in the blank: The primary component of the cell wall in plants is _______.

Answer 20

cellulose.

Question 21

What is the term for programmed cell death?

Answer 21

Apoptosis.

Question 22

Multiple Choice: Which organelle is known as the ‘powerhouse of the cell’? A) Nucleus B) Ribosome C) Mitochondria D) Golgi apparatus

Answer 22

C) Mitochondria.

Question 23

What is the function of lysosomes?

Answer 23

Digestion of waste materials and cellular debris.

Question 24

True or False: DNA is made up of amino acids.

Answer 24

False.

Question 25

Fill in the blank: The process by which cells divide to produce two identical daughter cells is called _______.

Answer 25

mitosis.

Question 26

What is the role of tRNA in protein synthesis?

Answer 26

To transfer amino acids to the ribosome.

Question 27

Multiple Choice: In which part of the cell does glycolysis occur? A) Mitochondria B) Cytoplasm C) Nucleus D) Endoplasmic reticulum

Answer 27

B) Cytoplasm.

Question 28

What is the significance of the genetic code?

Answer 28

It determines the sequence of amino acids in proteins.

Question 29

True or False: All organisms use the same genetic code.

Answer 29

True.

Question 30

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

Answer 30

amino acids.

Question 31

What is natural selection?

Answer 31

The process by which organisms better adapted to their environment tend to survive and produce more offspring.

Question 32

Multiple Choice: Which of the following is a type of RNA? A) mRNA B) dRNA C) rRNA D) Both A and C

Answer 32

D) Both A and C.

Question 33

What is the primary function of the nucleus?

Answer 33

To store genetic information.

Question 34

True or False: Mutations can lead to changes in protein function.

Answer 34

True.

Question 35

Fill in the blank: The process of converting mRNA into a protein is called _______.

Answer 35

translation.

Question 36

What is the role of the rough endoplasmic reticulum?

Answer 36

Synthesis of proteins destined for secretion or for use in the cell membrane.

Question 37

Multiple Choice: Which of the following is NOT a type of RNA? A) mRNA B) tRNA C) rRNA D) pRNA

Answer 37

D) pRNA.

Question 38

What is the function of the cytoskeleton?

Answer 38

To provide structural support and shape to the cell.

Question 39

True or False: Viruses are considered living organisms.

Answer 39

False.

Question 40

Fill in the blank: The main function of the plasma membrane is to maintain _______.

Answer 40

homeostasis.

Question 41

What is the end product of glycolysis?

Answer 41

Pyruvate.

Question 42

Multiple Choice: Which molecule is a product of the Krebs cycle? A) Glucose B) Oxygen C) Carbon dioxide D) ATP

Answer 42

C) Carbon dioxide.

Question 43

What is the role of ATP in cellular processes?

Answer 43

To provide energy.

Question 44

True or False: The cell membrane is permeable to all substances.

Answer 44

False.

Question 45

Fill in the blank: The phase of meiosis where homologous chromosomes separate is called _______.

Answer 45

anaphase I.