biologie

Question 1

What is the basic unit of life in all living organisms?

Answer 1

The cell.

Question 2

True or False: All cells contain DNA.

Answer 2

True.

Question 3

Fill in the blank: The __________ is the control center of the cell.

Answer 3

nucleus.

Question 4

What organelle is responsible for energy production in the cell?

Answer 4

Mitochondria.

Question 5

Which molecule is the primary energy currency of the cell?

Answer 5

ATP (adenosine triphosphate).

Question 6

What is the function of ribosomes in a cell?

Answer 6

Protein synthesis.

Question 7

True or False: Prokaryotic cells have a nucleus.

Answer 7

False.

Question 8

What is the semi-permeable membrane surrounding the cell called?

Answer 8

Cell membrane.

Question 9

Which process involves the movement of water across a cell membrane?

Answer 9

Osmosis.

Question 10

What term describes the chemical processes that occur within a living organism?

Answer 10

Metabolism.

Question 11

Multiple Choice: Which of the following is not a macromolecule? A) Carbohydrates B) Proteins C) Water D) Nucleic Acids

Answer 11

C) Water.

Question 12

What are enzymes?

Answer 12

Biological catalysts that speed up chemical reactions.

Question 13

Fill in the blank: The __________ theory states that all living things are made up of cells.

Answer 13

cell.

Question 14

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

Answer 14

Cellulose.

Question 15

True or False: Lipids are hydrophilic molecules.

Answer 15

False.

Question 16

What is the role of chloroplasts in plant cells?

Answer 16

Photosynthesis.

Question 17

What type of bond is formed between amino acids in proteins?

Answer 17

Peptide bond.

Question 18

Multiple Choice: Which of the following is a type of passive transport? A) Active transport B) Endocytosis C) Diffusion D) Exocytosis

Answer 18

C) Diffusion.

Question 19

What is the primary function of the smooth endoplasmic reticulum?

Answer 19

Lipid synthesis.

Question 20

What is the term for the genetic material that carries information for cell function?

Answer 20

DNA.

Question 21

Fill in the blank: __________ are the building blocks of proteins.

Answer 21

Amino acids.

Question 22

True or False: All cells can undergo mitosis.

Answer 22

False.

Question 23

What is the function of lysosomes in a cell?

Answer 23

Digestion and waste removal.

Question 24

What type of cell division results in two identical daughter cells?

Answer 24

Mitosis.

Question 25

Multiple Choice: Which of the following is a component of the cytoskeleton? A) Microtubules B) Chlorophyll C) Hemoglobin D) Glucose

Answer 25

A) Microtubules.

Question 26

What is the role of the Golgi apparatus?

Answer 26

Modification, sorting, and packaging of proteins.

Question 27

Fill in the blank: __________ are responsible for the synthesis of lipids and hormones.

Answer 27

Smooth endoplasmic reticulum.

Question 28

What are proteins made of?

Answer 28

Proteins are made of amino acids.

Question 29

True or False: Carbohydrates are primarily used for energy storage in the body.

Answer 29

True

Question 30

Fill in the blank: The basic unit of nucleic acids is called a _____ .

Answer 30

nucleotide

Question 31

What is the function of lipids in the body?

Answer 31

Lipids store energy, provide insulation, and make up cell membranes.

Question 32

Which type of carbohydrate is used for immediate energy?

Answer 32

Simple carbohydrates (sugars)

Question 33

What are the two main types of nucleic acids?

Answer 33

DNA and RNA

Question 34

Multiple Choice: Which of the following is NOT a lipid? A) Triglycerides B) Phospholipids C) Glucose

Answer 34

C) Glucose

Question 35

What is the primary role of enzymes, which are a type of protein?

Answer 35

Enzymes act as catalysts to speed up chemical reactions.

Question 36

True or False: All proteins are made up of the same 20 amino acids.

Answer 36

True

Question 37

Fill in the blank: Glycogen is a storage form of _____ in animals.

Answer 37

glucose

Question 38

What is the structure of DNA?

Answer 38

DNA has a double helix structure.

Question 39

Which lipid is essential for forming cell membranes?

Answer 39

Phospholipids

Question 40

Multiple Choice: Which of the following is a function of carbohydrates? A) Energy storage B) Genetic information C) Hormonal regulation

Answer 40

A) Energy storage

Question 41

What is the difference between saturated and unsaturated fats?

Answer 41

Saturated fats have no double bonds between carbon atoms, while unsaturated fats have one or more double bonds.

Question 42

True or False: RNA is single-stranded while DNA is double-stranded.

Answer 42

True

Question 43

Fill in the blank: The sequence of amino acids in a protein determines its _____ .

Answer 43

structure and function

Question 44

What are the three components of a nucleotide?

Answer 44

A sugar, a phosphate group, and a nitrogenous base.

Question 45

Multiple Choice: Which carbohydrate is found in plant cell walls? A) Starch B) Cellulose C) Glycogen

Answer 45

B) Cellulose

Question 46

What is the primary source of energy for the human body?

Answer 46

Carbohydrates

Question 47

True or False: Proteins can function as hormones.

Answer 47

True

Question 48

Fill in the blank: Lipids are hydrophobic, meaning they _____ .

Answer 48

repel water

Question 49

What is a polymer?

Answer 49

A polymer is a large molecule made up of repeating subunits called monomers.

Question 50

Multiple Choice: Which of the following is a type of protein? A) Hemoglobin B) Cellulose C) Triglyceride

Answer 50

A) Hemoglobin

Question 51

What role do ribosomes play in protein synthesis?

Answer 51

Ribosomes are the sites where proteins are synthesized from amino acids.

Question 52

True or False: Lipids are soluble in water.

Answer 52

False

Question 53

Fill in the blank: The genetic code is carried by _____ in DNA.

Answer 53

sequences of nucleotides