B2 Flashcards

(28 cards)

1
Q

Define cell membrane.

A

A biological membrane that separates and protects the interior of a cell from its environment.

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2
Q

What is the function of ribosomes?

A

Ribosomes are responsible for protein synthesis in cells.

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3
Q

Fill in the blank: Photosynthesis occurs in _______ cells.

A

Plant

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4
Q

True or false: Mitosis results in two identical daughter cells.

A

TRUE

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5
Q

Define enzyme.

A

A protein that acts as a catalyst to speed up biochemical reactions.

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6
Q

What is the role of chlorophyll?

A

Chlorophyll absorbs light energy for photosynthesis in plants.

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7
Q

Fill in the blank: DNA stands for _______.

A

Deoxyribonucleic acid

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8
Q

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

A

TRUE

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9
Q

What is the function of mitochondria?

A

Mitochondria produce energy in the form of ATP through respiration.

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10
Q

Define homeostasis.

A

The process by which a stable internal environment is maintained in an organism.

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11
Q

What is a gene?

A

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

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12
Q

Fill in the blank: Carbon dioxide is a product of _______ respiration.

A

Aerobic

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13
Q

True or false: Diffusion requires energy to occur.

A

FALSE

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14
Q

What is the role of stomata in plants?

A

Stomata regulate gas exchange and water loss in plants.

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15
Q

Define biodiversity.

A

The variety of life in the world or a particular habitat.

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16
Q

What is natural selection?

A

The process where organisms better adapted to their environment tend to survive and reproduce.

17
Q

Fill in the blank: Glucose is a type of _______.

18
Q

True or false: Prokaryotic cells lack a nucleus.

19
Q

What is the function of vacuoles?

A

Vacuoles store nutrients, waste products, and help maintain turgor pressure in plant cells.

20
Q

Define ecosystem.

A

A community of living organisms interacting with their physical environment.

21
Q

What is cellular respiration?

A

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

22
Q

Fill in the blank: Proteins are made up of _______ acids.

23
Q

True or false: Fungi are classified as plants.

24
Q

What is the role of chromosomes?

A

Chromosomes carry genetic information in the form of genes.

25
Define **mutation**.
A change in the DNA sequence that can lead to variations in traits.
26
What is **cell differentiation**?
The process by which a cell becomes specialized for a specific function.
27
Fill in the blank: **Antibodies** are produced by _______ cells.
B
28
True or false: **Viruses** can reproduce independently.
FALSE