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Biology and Science Quiz

Total questions: 55

Worksheet time: 28mins

Name
Class
Date
1.

What is the basic unit of life?

a)

Organ

b)

Tissue

c)

Cell

d)

Atom

2.

What are tissues made of?

a)

Organs

b)

Cells

c)

Organ systems

d)

Organelles

3.

Which is NOT one of the 4 macromolecules?

a)

Proteins

b)

Lipids

c)

Glucose

d)

Nucleic acids

4.

The most abundant macromolecules in the body are:

a)

Carbohydrates

b)

Proteins

c)

Nucleic acids

d)

Lipids

5.

Homeostasis refers to:

a)

Cell division

b)

Stable internal environment

c)

DNA replication

d)

Digestion

6.

Human blood has a pH close to:

a)

3.0

b)

5.6

c)

7.4

d)

9.8

7.

The function of a buffer is to:

a)

Lower activation energy

b)

Maintain pH stability

c)

Increase pH only

d)

Neutralize all acids

8.

Cellular respiration occurs in the:

a)

Chloroplast

b)

Ribosome

c)

Mitochondria

d)

Nucleus

9.

Photosynthesis occurs in the:

a)

Mitochondria

b)

Chloroplast

c)

Cytoplasm

d)

Ribosome

10.

Somatic cells divide by:

a)

Mitosis

b)

Meiosis

c)

Binary fission

d)

Budding

11.

Gametes are produced by:

a)

Mitosis

b)

Meiosis

c)

Fermentation

d)

Binary fission

12.

Haploid cells have:

a)

Double chromosomes

b)

No chromosomes

c)

One set of chromosomes

d)

Mutated chromosomes

13.

How many ATP are typically produced in cellular respiration?

a)

2–4

b)

36–38

c)

50–55

d)

100+

14.

Codons are found on ______, anticodons are found on ______.

a)

tRNA; mRNA

b)

DNA; RNA

c)

mRNA; tRNA

d)

DNA; tRNA

15.

The longest phase of the cell cycle is:

a)

Prophase

b)

Metaphase

c)

Interphase

d)

Cytokinesis

16.

Viruses are considered:

a)

Living organisms

b)

Nonliving particles

c)

Prokaryotic organisms

d)

Eukaryotic organisms

17.

Bacterial plasmids provide:

a)

Food for the cell

b)

Extra DNA that gives advantages

c)

Energy production

d)

Protein formation

18.

UV light most commonly causes:

a)

Codon errors

b)

Thymine dimers

c)

More ATP production

d)

More chromosomes

19.

Ribose and deoxyribose differ by:

a)

Nitrogen content

b)

One oxygen atom

c)

Number of bonds

d)

Number of electrons

20.

Functional groups affect:

a)

Organelle structure

b)

DNA replication only

c)

Chemical behavior of molecules

d)

Bond length only

21.

A theory is different from a hypothesis because it is:

a)

Untested

b)

A random guess

c)

Well-supported

d)

Not based on evidence

22.

First step of the scientific method:

a)

Analyze data

b)

Observation

c)

Conclusion

d)

Communicate results

23.

Enzymes work by:

a)

Providing energy

b)

Lowering activation energy

c)

Freezing reactions

d)

Adding ATP

24.

DNA in eukaryotes is shaped like a:

a)

Single strand

b)

Helix

c)

Circle

d)

Triangle

25.

Gene regulation controls:

a)

Cell age

b)

Gene expression

c)

Mutation rates

d)

Mitosis speed

26.

Each person has how many alleles for a gene?

a)

1

b)

2

c)

3

d)

4

27.

Which does NOT follow Mendelian inheritance?

a)

Dominant/recessive

b)

Incomplete dominance

c)

Codominance

d)

Polygenic traits

28.

Why is water a good solvent?

a)

It’s solid at room temperature

b)

It is nonpolar

c)

It is polar

d)

It has no charge

29.

Water is polar because:

a)

Electrons are shared equally

b)

It has no charge

c)

Electrons are shared unequally

d)

It is hydrophobic

30.

A 9:3:3:1 ratio comes from which cross?

a)

AABB × AABB

b)

Aa × Aa

c)

AaBb × AaBb

d)

Aabb × aaBb

31.

A malignant tumor:

a)

Cannot grow

b)

Spreads and invades tissues

c)

Is always harmless

d)

Only appears in nerve cells

32.

Germline mutations:

a)

Occur in body cells

b)

Can be inherited

c)

Cannot be harmful

d)

Affect only tumors

33.

Lysogenic viruses:

a)

Kill the host immediately

b)

Never enter lytic cycle

c)

Integrate their DNA into host DNA

d)

Only infect plants

34.

Gene regulation in eukaryotes is needed for:

a)

Photosynthesis only

b)

Keeping every gene on

c)

Specialization of cells

d)

Making DNA double-stranded

35.

Which is NOT a characteristic of living things?

a)

Reproduction

b)

Response to stimuli

c)

Made of cells

d)

Non-changing internal environment

36.

Which property of water allows insects to walk on it?

a)

High density

b)

Cohesion

c)

Conductivity

d)

Hydrophobicity

37.

Prokaryotes lack a:

a)

Cell wall

b)

Nucleus

c)

Cell membrane

d)

Cytoplasm

38.

Cells in G0 phase:

a)

Divide constantly

b)

Cannot function

c)

Do not divide

d)

Have no DNA

39.

What can denature enzymes?

a)

Cold temperatures

b)

Neutral pH

c)

Extreme pH or heat

d)

More enzymes

40.

A DNA nucleotide contains:

a)

Sugar, base, phosphate

b)

Sugar only

c)

Protein and sugar

d)

Lipids

41.

The simplest DNA level of organization is:

a)

Chromosome

b)

Chromatin

c)

Gene

d)

Nucleotide

42.

Gene regulation controls:

a)

What proteins are made

b)

Blood pH

c)

Chloroplast function

d)

Cell size

43.

Chromosomes are made of:

a)

Protein only

b)

Lipids only

c)

DNA and histones

d)

RNA strands

44.

Constitutive genes are:

a)

Always on

b)

Only used in emergencies

c)

Never expressed

d)

Turned on during mitosis only

45.

Horizontal gene transfer occurs in:

a)

Evolution

b)

Photosynthesis

c)

DNA replication

d)

Mitosis

46.

A gene begins at a _____ and ends at a _____.

a)

Start codon; stop codon

b)

Promoter; terminator

c)

Telomere; centromere

d)

Nucleus; ribosome

47.

Bases have a pH:

a)

Below 7

b)

Equal to 7

c)

Above 7

d)

Exactly 10

48.

Bacteria reproduce using:

a)

Mitosis

b)

Budding

c)

Meiosis

d)

Binary fission

49.

Science is:

a)

Based on beliefs

b)

Based on evidence

c)

Never changing

d)

Personal opinion

50.

Carbon’s valence allows how many bonds?

a)

2

b)

3

c)

4

d)

6

51.

Which category is MOST inclusive?

a)

Genus

b)

Kingdom

c)

Phylum

d)

Species

52.

Which are prokaryotes?

a)

Only fungi

b)

Bacteria and archaea

c)

Plants and animals

d)

Protists and fungi

53.

The Earth is about:

a)

4.6 billion years old

b)

1 million years old

c)

6000 years old

d)

40 million years old

54.

Dinosaurs lived during the:

a)

Paleozoic

b)

Mesozoic

c)

Cenozoic

d)

Precambrian

55.

We currently live in the:

a)

Mesozoic Era

b)

Precambrian Era

c)

Cenozoic Era

d)

Jurassic Era

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