What is the purpose of an enzyme?

give permission for the reaction

control how many reactions occur

Which of the following conclusions can be drawn from this graph?

The optimum pH of the enzyme is 6.6.

The optimum pH of the enzyme is 5.8

The enzyme’s activity increases as pH increases 5.0 to 9.0

The enzyme’s activity is greater around pH of 8.0 .

In what way is the DNA of a nerve cell different from the DNA of a muscle cell?

The DNA is the same but different genes are activated in each cell

The DNA is the same but each cell contains different genes

The DNA is different, but the same genes are turned on and off in each cell

The DNA is different, but each cell contains the same genes

Which explains active transport?

Molecules moving from low to high concentration with the use of ATP energy

Diffusion of small, uncharged molecules from high to low concentration across the cell membrane

Diffusion of water molecules from high to low concentration across the cell membrane

Diffusion of molecules from high to low concentration through the cell membrane with the help of a protein channel

What is the correct order of organization?

cell-tissue-organs-organ systems-organism

tissues-cells-organs-organ systems-organism

organism-cells-tissues-organ systems-organism

tissues-cells-organs-organ systems-organism

How are cellular respiration and photosynthesis related, in regards to energy?

The energy captured in photosynthesis is used to power cellular respiration

The energy transformed in cellular respiration is used to power photosynthesis

Photosynthesis and respiration perform the same tasks in terms of energy transformation

Energy is not involved in either photosynthesis or cellular respiration

Put the following in order: G2, cytokinesis, G1, mitosis, S

G1, S, G2, Mitosis, cytokinesis

G1, G2, S, Mitosis, cytokinesis

G1, G2, S, cytokinesis, mitosis

G1, S, G2, cytokinesis, mitosis

What is the end result of mitosis?

2 identical gametes (sex cells)

2 daughter cells with different genetic information

How is it possible to combine bacterial DNA with human DNA?

Both humans and bacteria share the same components of DNA.

Humans have the same exact DNA sequence as bacteria

Humans have bacteria inside of them.

Humans and bacteria are both eukaryotic organisms.

A boy inherits genes for tallness, but his growth is limited as a result of poor nutrition. This is an example of -

environmental influence on gene expression

Which best describes how the traits of an organism are determined by the DNA in their cells?

DNA codes for proteins which allow an organism to grow and function

DNA provides the energy need for cellular processes

DNA is copied to mRNA, which controls cellular functions

DNA unzips and each strand codes for a different amino acid

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which biomolecule is this a picture of?

Protein

Nucleic Acid

Lipid

Carbohydrate

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which biomolecule is this a picture of?

Protein

Nucleic Acid

Lipid

Carbohydrate

Which biomolecule is this a picture of?

Protein

Nucleic Acid

Lipid

Carbohydrate

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which biomolecule is this a picture of?

Protein

Nucleic Acid

Lipid

Carbohydrate

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which biomolecule is also known as enzymes?

Carbohydrate

Lipid

Nucleic Acid

Protein

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which biomolecule is your main source of quick energy?

Nucleic Acid

Protein

Lipid

Carbohydrate

The monomer of a protein is called

an amino acid

a monosaccharide

a fatty acid

a nucleotide

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Biology STAAR Review

95 questions

Which biomolecule is this a picture of?

Which biomolecule is this a picture of?

Which biomolecule is this a picture of?

Which biomolecule is this a picture of?

Which biomolecule is also known as enzymes?

Which biomolecule is your main source of quick energy?

The monomer of a protein is called

Which biomolecule is found in fats, oils, and waxes and is a source of long-term energy?

Which of the following molecules makes up the structure of a cell membrane?

Which of the 4 biomolecules is used for long-term energy storage, insulation, and protection?

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