Biology Review

Enzymes are biological catalysts. Which statement about enzymes is not correct?

• Enzymes are destroyed when they are used.

• Enzymes temporarily associate with a reactant.

• Enzymes are composed of chains of amino acids.

• Enzymes always have a specific shape.

Which one of the kingdoms is not characterized by eukaryotic cells?

• Kingdom Fungi

• Kingdom Protist

• Kingdom Bacteria

• Kingdom Plantae

A model of a DNA molecule is shown below.

The arrow indicates –

• the connection point for a codon and a DNA triplet

• the hydrogen bond between complementary nucleotides

• the link between two amino acids joined together

• the bond between adjacent phosphate and deoxyribose molecules

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NGSS.HS-LS1-1

Which statement describes how the function of lipids and carbohydrates are similar?

• Both contain peptide bonds and amino acids.

• Both speed up the rate of reactions.

• Both are used to store genetic material.

• Both provide the body with energy.

Enzymes are proteins that help increase the rate of chemical reactions inside cells. These proteins are composed of many simpler molecules called amino acids. Which of the following suggests that the shape of an enzyme determines the enzyme’s function?

• Enzymes are specific to a substrate.

• Enzymes can be found in all life-forms.

• Enzymes are activated by neighboring molecules.

• Enzymes can operate in a wide range of conditions.

Felicia observed that the lettuce plants in her garden had wilted after several days of drought. The next day, there was a downpour of rain, and the leaves began to swell. What cellular process caused this effect in the lettuce plants?

• Active transport

• Cellular respiration

• Osmosis

• Photosynthesis

Carbohydrates are chains of what smaller organic molecule?

• Lipids

• Proteins

• Monosaccharides

• Disaccharide

Cellulose is a ... and is found in ...

• Sugar...cell walls of plants

• Proteins...lipids

• Sugar...found in animal cells

• Disaccharide...Carbohydrates

A protein catalyst is also called a(n) ... 

• lipid

• carbohydrate

• catalyst

• enzyme

This phase includes the production of spindle and the disappearance of the nuclear membrane

• interphase

• anaphase

• telophase

• prophase

Tags

NGSS.HS-LS1-4