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Mdcat > Biology Mcqs > Flashcards

Biology Mcqs Flashcards

1
Q

What is the basic unit of life?

A

Cell

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2
Q

True or False: DNA stands for Deoxyribonucleic Acid.

A

True

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3
Q

Fill in the blank: The process by which plants make their own food is called __________.

A

Photosynthesis

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4
Q

What organelle is known as the powerhouse of the cell?

A

Mitochondria

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5
Q

Which type of RNA carries amino acids to the ribosome?

A

Transfer RNA (tRNA)

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6
Q

What is the function of ribosomes?

A

Protein synthesis

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7
Q

True or False: The human genome contains approximately 20,000-25,000 genes.

A

True

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8
Q

What is the process of cell division in somatic cells called?

A

Mitosis

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9
Q

Which molecule serves as the primary energy currency in cells?

A

Adenosine triphosphate (ATP)

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10
Q

What are the four main types of macromolecules?

A

Carbohydrates, proteins, lipids, nucleic acids

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11
Q

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

A

Nucleus

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12
Q

What is the term for the movement of water across a semipermeable membrane?

A

Osmosis

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13
Q

True or False: Enzymes are consumed in chemical reactions.

A

False

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14
Q

What is the primary function of chloroplasts?

A

Photosynthesis

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15
Q

Which structure in the cell is responsible for packaging and distributing proteins?

A

Golgi apparatus

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16
Q

What is the main function of the cell membrane?

A

Regulate what enters and exits the cell

17
Q

Fill in the blank: __________ are specialized cells that transmit nerve impulses.

A

Neurons

18
Q

What type of bond holds the two strands of DNA together?

A

Hydrogen bonds

19
Q

Which process converts glucose into pyruvate?

A

Glycolysis

20
Q

True or False: All living organisms are made up of cells.

A

True

21
Q

What is the role of the smooth endoplasmic reticulum?

A

Lipid synthesis and detoxification

22
Q

What type of feedback mechanism is involved in maintaining homeostasis?

A

Negative feedback

23
Q

Fill in the blank: The __________ is the site of ribosome production.

A

Nucleolus

24
Q

What is the function of lysosomes?

A

Digestion and waste removal

25
Q

Which phase of the cell cycle is the longest?

A

Interphase

26
Q

What is the primary structural component of cell membranes?

A

Phospholipids

27
Q

True or False: Mutation can lead to genetic variation.

A

True

28
Q

What is the term for the genetic makeup of an organism?

A

Genotype

Mdcat (2 decks)

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