IB Biology year 1 review | Baamboozle - Baamboozle

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A particular triplet of bases in the template strand of DNA is AGT. The corresponding codon for the mRNA transcribed is:

UCA

In the electron micrograph of a cat liver below, what are the structures labelled X and Y?

X: rough endoplasmic reticulum Y: mitochondrion

What is the name of the reaction in which monomers are joined together and form a polymer?

Condensation

A hydrophilic substance is one that:

Is soluble in water.

Which molecules form a triglyceride?

Glycerol and three fatty acids

Name the enzyme that separates the two strands of the DNA double helix during replication.

helicase

What type of fatty acid is shown in this diagram?

Unsaturated trans fatty acid

What is the function of structure I in this generalised diagram of a prokaryote?

Movement of the organism.

What causes water to have a relatively high specific heat capacity?

Hydrogen bonds between hydrogen and oxygen of different water molecules.

Which of the following enzymes is responsible for uncoiling and separating the DNA strands during transcription?

RNA polymerase

What is the difference between simple and facilitated diffusion?

Facilitated diffusion is similar to simple diffusion, except that it requires channel proteins or carrier proteins, which are specific to the molecules being tr

DNA replication occurs by what method?

Semi-conservative

What is the function of the smooth ER?

Responsible for producing and storing lipids, including steroids.

In mitosis, what are the main events of metaphase?

Spindle fibres bind to the centromere of sister chromatids and cause their movement towards the equatorial plate

Which of the following gases contribute to the greenhouse effect? I. Methane II. Water vapour III. Nitrogen

I and II only

What is the function of the Golgi apparatus?

Processes and packages proteins, which are ultimately released in Golgi vesicles.

The DNA of a particular cell is damaged so that the cell continues to divide uncontrollably. What is the most likely result?

Tumour formation