Introduction to 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 one or more cells.

Answer 2

True.

Question 3

Fill in the blank: The process by which organisms maintain a stable internal environment is called ______.

Answer 3

homeostasis.

Question 4

What are the four main macromolecules essential for life?

Answer 4

Proteins, nucleic acids, carbohydrates, and lipids.

Question 5

Which type of cell lacks a nucleus?

Answer 5

Prokaryotic cell.

Question 6

What is the genetic material found in all living cells?

Answer 6

DNA.

Question 7

Multiple choice: Which of the following is NOT a characteristic of life? A) Growth B) Reproduction C) Inability to evolve D) Response to stimuli

Answer 7

C) Inability to evolve.

Question 8

What is the primary function of ribosomes in a cell?

Answer 8

Protein synthesis.

Question 9

True or False: Photosynthesis occurs in mitochondria.

Answer 9

False.

Question 10

What are the two main types of cells?

Answer 10

Prokaryotic and eukaryotic cells.

Question 11

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

Answer 11

mitochondria.

Question 12

What is the role of enzymes in biological processes?

Answer 12

To speed up chemical reactions.

Question 13

Multiple choice: Which of the following processes do plants use to convert sunlight into energy? A) Respiration B) Photosynthesis C) Fermentation D) Digestion

Answer 13

B) Photosynthesis.

Question 14

What is the term for the variety of life in the world or in a particular habitat or ecosystem?

Answer 14

Biodiversity.

Question 15

True or False: Evolution is a change in the genetic makeup of a population over time.

Answer 15

True.

Question 16

What is the smallest unit of an element?

Answer 16

An atom.

Question 17

Fill in the blank: The study of heredity and the variation of inherited characteristics is called ______.

Answer 17

genetics.

Question 18

What are the two main stages of the cell cycle?

Answer 18

Interphase and mitotic phase.

Question 19

Multiple choice: Which biomolecule is primarily responsible for storing and transmitting genetic information? A) Proteins B) Nucleic acids C) Carbohydrates D) Lipids

Answer 19

B) Nucleic acids.

Question 20

What is a hypothesis?

Answer 20

A testable prediction about the relationship between variables.

Question 21

True or False: The scientific method is a linear process.

Answer 21

False.

Question 22

What is the primary function of the cell membrane?

Answer 22

To regulate what enters and exits the cell.

Question 23

Fill in the blank: The ______ is the part of the cell that contains the genetic material.

Answer 23

nucleus.

Question 24

What is meant by ‘natural selection’?

Answer 24

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

Question 25

Multiple choice: Which of the following is a type of symbiotic relationship where both species benefit? A) Commensalism B) Parasitism C) Mutualism D) Competition

Answer 25

C) Mutualism.

Question 26

What is the primary role of chlorophyll in plants?

Answer 26

To absorb light energy for photosynthesis.

Question 27

True or False: All living organisms require oxygen to survive.

Answer 27

False.