Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Biology > A level biology aqa content > Flashcards

A level biology aqa content Flashcards

(77 cards)

Start Studying
1
Q

What is the basic unit of life?

A

Cell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

True or False: DNA stands for Deoxyribonucleic Acid.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Fill in the blank: The process by which plants convert sunlight into energy is called _____.

A

Photosynthesis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the primary function of ribosomes?

A

Protein synthesis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Multiple Choice: Which of the following is not a type of RNA? A) mRNA B) tRNA C) rRNA D) dRNA

A

D) dRNA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the role of the mitochondria in a cell?

A

Energy production

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

True or False: Enzymes are proteins that speed up chemical reactions.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Fill in the blank: The liquid portion of the cell is called _____.

A

Cytoplasm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

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

A

Hydrogen bonds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Multiple Choice: Which organelle is responsible for photosynthesis? A) Mitochondria B) Chloroplast C) Nucleus D) Ribosome

A

B) Chloroplast

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the main purpose of the cell membrane?

A

To regulate what enters and leaves the cell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

True or False: Prokaryotic cells have a nucleus.

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Fill in the blank: The genetic material of a cell is found in the _____.

A

Nucleus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the function of the Golgi apparatus?

A

Modification and packaging of proteins

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Multiple Choice: Which of the following is a function of the smooth endoplasmic reticulum? A) Protein synthesis B) Lipid synthesis C) DNA replication D) Cellular respiration

A

B) Lipid synthesis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the process of cell division called?

A

Mitosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

True or False: All cells contain a cell wall.

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Fill in the blank: The structure that controls the cell’s activities is the _____.

A

Nucleus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is the difference between passive and active transport?

A

Passive transport does not require energy, while active transport does.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Multiple Choice: Which process does not require oxygen? A) Aerobic respiration B) Anaerobic respiration C) Both A and B D) None of the above

A

B) Anaerobic respiration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is the role of chlorophyll in photosynthesis?

A

To absorb light energy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

True or False: Ribosomes can be found free-floating in the cytoplasm or attached to the rough endoplasmic reticulum.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Fill in the blank: The primary energy currency of the cell is _____.

A

ATP

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What is the role of the lysosome?

A

Digestion and waste removal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Multiple Choice: Which of the following is a characteristic of living organisms? A) Growth B) Reproduction C) Response to stimuli D) All of the above
D) All of the above
26
What is osmosis?
The diffusion of water across a selectively permeable membrane
27
True or False: The rough endoplasmic reticulum is involved in lipid synthesis.
False
28
Fill in the blank: The semi-permeable barrier surrounding the cell is called the _____.
Cell membrane
29
What are the two main stages of photosynthesis?
Light-dependent reactions and Calvin cycle
30
Multiple Choice: Which molecule carries genetic information? A) RNA B) DNA C) Both A and B D) None of the above
B) DNA
31
What is the main purpose of cellular respiration?
To convert glucose into usable energy (ATP)
32
True or False: All eukaryotic cells have mitochondria.
True
33
Fill in the blank: The basic building blocks of proteins are called _____.
Amino acids
34
What is the function of the nucleolus?
Ribosome production
35
Multiple Choice: Which of the following is a type of passive transport? A) Endocytosis B) Exocytosis C) Diffusion D) Active transport
C) Diffusion
36
What is the main function of the plasma membrane?
To protect the cell and control transport in and out
37
True or False: Genetic variation occurs only through sexual reproduction.
False
38
Fill in the blank: The process of converting mRNA into a protein is called _____.
Translation
39
What is the role of the spindle fibers during mitosis?
To separate chromosomes
40
Multiple Choice: Which of the following is a product of glycolysis? A) ATP B) NADH C) Pyruvate D) All of the above
D) All of the above
41
What is the difference between homologous chromosomes?
They are chromosomes that are similar in shape, size, and genetic content but may carry different alleles.
42
True or False: The term 'allele' refers to different forms of a gene.
True
43
Fill in the blank: The physical appearance of an organism is referred to as its _____.
Phenotype
44
What is the process by which DNA is copied called?
DNA replication
45
Multiple Choice: Which of the following processes occurs in the mitochondria? A) Glycolysis B) Krebs cycle C) Fermentation D) None of the above
B) Krebs cycle
46
What are the three main components of nucleotides?
A phosphate group, a sugar, and a nitrogenous base
47
True or False: The cell cycle consists of interphase and mitotic phase.
True
48
Fill in the blank: The phase of the cell cycle where the cell grows and prepares for division is called _____.
Interphase
49
What is the role of cytokinesis?
To divide the cytoplasm and organelles into two daughter cells
50
Multiple Choice: Which type of RNA carries amino acids to the ribosome? A) mRNA B) tRNA C) rRNA D) sRNA
B) tRNA
51
What is the primary function of the cell wall in plant cells?
To provide structure and support
52
True or False: The primary structure of a protein is determined by the sequence of amino acids.
True
53
Fill in the blank: The stage of mitosis where chromosomes align in the center of the cell is called _____.
Metaphase
54
What is the process of converting glucose into energy called?
Cellular respiration
55
Multiple Choice: Which of the following is not a part of the endomembrane system? A) Golgi apparatus B) Lysosome C) Mitochondria D) Endoplasmic reticulum
C) Mitochondria
56
What is the role of the cell cycle checkpoints?
To ensure that the cell is ready to proceed to the next stage of division
57
True or False: Genetic drift is a mechanism of evolution.
True
58
Fill in the blank: The study of heredity is known as _____.
Genetics
59
What is the difference between a genotype and a phenotype?
Genotype is the genetic makeup, while phenotype is the observable traits.
60
Multiple Choice: Which of the following is a type of mutation? A) Substitution B) Insertion C) Deletion D) All of the above
D) All of the above
61
What is the significance of the Hardy-Weinberg principle?
It describes the genetic equilibrium in a population.
62
True or False: Natural selection is the process by which organisms better adapted to their environment tend to survive.
True
63
Fill in the blank: The process of evolution is driven by variation, competition, and _____.
Natural selection
64
What is the role of a carrier protein in facilitated diffusion?
To help transport molecules across the membrane.
65
Multiple Choice: Which of the following is a characteristic of enzymes? A) They are consumed in reactions B) They lower activation energy C) They work at any temperature D) None of the above
B) They lower activation energy
66
What is the role of the large central vacuole in plant cells?
Storage and maintaining turgor pressure.
67
True or False: All eukaryotic cells have a cell wall.
False
68
Fill in the blank: The basic functional unit of heredity is called a _____.
Gene
69
What is the function of the cytoskeleton?
To provide structural support and shape to the cell.
70
Multiple Choice: Which part of the cell is responsible for detoxifying harmful substances? A) Ribosome B) Smooth ER C) Nucleus D) Golgi apparatus
B) Smooth ER
71
What is the primary purpose of meiosis?
To produce gametes for sexual reproduction.
72
True or False: A dominant allele will always express its trait, regardless of the second allele.
True
73
Fill in the blank: The number of chromosomes in a human somatic cell is _____.
46
74
What is the role of the plasma membrane in maintaining homeostasis?
It regulates the internal environment of the cell.
75
Multiple Choice: Which of the following is a sign of a chemical reaction? A) Color change B) Gas production C) Precipitate formation D) All of the above
D) All of the above
76
What is the function of the rough endoplasmic reticulum?
To synthesize and process proteins.
77
True or False: The genetic code is universal among all living organisms.
True

Biology (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions