FREE IB Biology Questions and Answers

Question 1

A DNA mutation known as a ___________ alters the DNA sequence but does not modify the amino acids in a protein.

Accepted Answer

Silent mutation

Answer

Insertion mutation

Answer

Deletion mutation

Answer

Frameshift mutation

Question 2

In an experiment, helminthes infection was given to mice, and population shifts were tracked. It was discovered that as mice got worse, their numbers fell. This connection is an illustration of ________.

Accepted Answer

Parasitism

Answer

Competition

Answer

Commensalism

Answer

Mutualism

Question 3

The existence of ________ in plant cells sets them apart from animal ones.

Accepted Answer

Cell wall

Answer

Cytoplasm

Answer

Cell membrane

Answer

Nucleus

Question 4

Which two different types of chemicals are involved in translation?

Accepted Answer

mRNA and protein

Answer

mRNA and DNA

Answer

DNA and tRNA

Answer

RNA and DNA

Question 5

Which of the following is not a part of the endocrine system?

Accepted Answer

Testis

Answer

heart

Answer

liver

Answer

lung

Question 6

Which of the groups below has the fewest species, out of the following?

Accepted Answer

Genus

Answer

Phylum

Answer

Order

Answer

Kingdom

Question 7

Which of the following best describes how a fertilized egg develops?

Accepted Answer

Zygote-morula-blastula-embryo

Answer

Zygote-embryo-blastula-morula

Answer

Zygote-blastula-morula-embryo

Answer

Morula-blastula-zygote-embryo

Question 8

The location of protein synthesis is which of the following?

Accepted Answer

Ribosomes

Answer

Vacuoles

Answer

Cell wall

Answer

RNA polymerase

Question 9

Blood typing is frequently used to establish biological paternity. X, Y, and Z are three males that could be the fathers of a child who has a blood type B. The mother's blood type is O, according to a blood test. Which blood type must a potential father have in order to rule them out as a parent?

Accepted Answer

A

Answer

B

Answer

AB

Answer

None of the above

Question 10

It is known as _________ when genetic material is transferred between a pair of chromosomes.

Accepted Answer

Translocation

Answer

Substitution

Answer

Transcription

Answer

Transduction