Science

Question 1

What is osmosis?

Answer 1

The movement of water molecules through a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Question 2

True or False: Diffusion requires energy.

Answer 2

False

Question 3

Fill in the blank: The process by which substances move from an area of higher concentration to an area of lower concentration is called __________.

Answer 3

diffusion

Question 4

What is the main purpose of cell division?

Answer 4

To produce new cells for growth, repair, and reproduction.

Question 5

What are the two main types of cell division?

Answer 5

Mitosis and meiosis.

Question 6

Multiple choice: Which type of cell division results in genetically identical cells? A) Mitosis B) Meiosis

Answer 6

A) Mitosis

Question 7

What is meiosis?

Answer 7

A type of cell division that reduces the chromosome number by half, producing four genetically diverse gametes.

Question 8

What is the “ I change” Varible in an experiment

Answer 8

Independent

Question 9

What are the main systems of the human body?

Answer 9

Circulatory, respiratory, digestive, nervous, muscular, skeletal, endocrine, immune, integumentary, and reproductive systems.

Question 10

Fill in the blank: The __________ system is responsible for transporting blood throughout the body.

Answer 10

circulatory

Question 11

Multiple choice: Which system is primarily responsible for gas exchange? A) Digestive B) Respiratory

Answer 11

B) Respiratory

Question 12

What is the role of the food web in an ecosystem?

Answer 12

To illustrate the complex feeding relationships between organisms in an ecosystem.

Question 13

True or False: A food chain is a linear sequence of organisms through which nutrients and energy pass.

Answer 13

True

Question 14

What is the main source of energy for almost all ecosystems?

Answer 14

The sun.

Question 15

Data Measured

Answer 15

Dependant Varible

Question 16

What is growth in biological terms?

Answer 16

The increase in size or mass of an organism.

Question 17

Multiple choice: Which of the following is a type of growth? A) Primary B) Secondary C) Both A and B

Answer 17

C) Both A and B

Question 18

What are the stages of the cell cycle?

Answer 18

Interphase, mitosis, and cytokinesis.

Question 19

True or False: Interphase is the stage where the cell is actively dividing.

Answer 19

False

Question 20

What is cytokinesis?

Answer 20

The division of the cytoplasm to form two separate daughter cells after mitosis.

Question 21

Fill in the blank: In meiosis, genetic variation is introduced through __________ and independent assortment.

Answer 21

crossing over

Question 22

What is the significance of crossing over in meiosis?

Answer 22

It increases genetic diversity among gametes.

Question 23

Multiple choice: Which of the following is NOT a body system? A) Nervous B) Digestive C) Photosynthesis

Answer 23

C) Photosynthesis

Question 24

What are the primary functions of the nervous system?

Answer 24

To transmit signals between different parts of the body and to coordinate responses to stimuli.

Question 25

True or False: All cells in an organism have the same DNA.

Answer 25

True

Question 26

What is the function of ribosomes in a cell?

Answer 26

To synthesize proteins.

Question 27

Fill in the blank: __________ are the basic units of life.

Answer 27

Cells

Question 28

Multiple choice: What structure regulates what enters and leaves the cell? A) Cell wall B) Cell membrane C) Nucleus

Answer 28

B) Cell membrane

Question 29

What is the role of mitochondria in the cell?

Answer 29

To produce energy through cellular respiration.

Question 30

True or False: Plant cells contain chloroplasts for photosynthesis.

Answer 30

True

Question 31

What is the primary purpose of photosynthesis?

Answer 31

To convert light energy into chemical energy stored in glucose.

Question 32

Fill in the blank: The __________ is the control center of the cell that contains genetic material.

Answer 32

nucleus

Question 33

What are the two main types of cells in the human body?

Answer 33

Prokaryotic and eukaryotic cells.

Question 34

Multiple choice: Which type of cell is larger and more complex? A) Prokaryotic B) Eukaryotic

Answer 34

B) Eukaryotic

Question 35

What is a gamete?

Answer 35

A reproductive cell that has half the number of chromosomes of a somatic cell.

Question 36

True or False: The process of cellular respiration occurs in the mitochondria.

Answer 36

True

Question 37

What is the primary role of the endocrine system?

Answer 37

To regulate body functions through hormones.

Question 38

Fill in the blank: The __________ system protects the body from disease and foreign invaders.

Answer 38

immune

Question 39

What is homeostasis?

Answer 39

The maintenance of a stable internal environment in an organism.

Question 41

Diameter

Answer 41

straight line from side to side