Biology Practice Test

1.The net effect of photosynthesis, chemically, is reduction, leading to the formation of which products?

-Oxygen and Carbohydrates- The reactants in the process of photosynthesis are carbon dioxide and water. Sunlight is needed for the reactions to occur. The products of photosynthesis are oxygen and glucose, a simple carbohydrate. ATP is used in photosynthesis but is neither a reactant nor a product. ATP is produced in a different process called cellular respiration.

How many chromosomes does an individual human person have?

46

A cell uses which of the following to accelerate chemical reactions enabling its metabolic machinery to operate?

Enzymes

Which of the following directly (as opposed to indirectly) supports Charles Darwin's theory of evolution?

Evidence from Genetics

A multicellular organism is a colony of independent cells.

False

Genes are located within the cytoplasm of the cell.

False

Which of the following is not part of the metabolic sequence?

Hydoplasm

Which of the following represents the largest group of biological classification?

Kingdom

The phrase "survival of the fittest" is an alternate phrase expressing which of the following principles?

Natural Selection

Changes in the genetic constitution of an organism may be due to which of the following?

New combinations of chromosomes. Chromosome mutation Gene mutation.

Cells contain which of the following to carry out specific functions like providing energy and producing hormones?

Organelles

Light initiates different types of cellular reactions. Which of the following responses to light converts the energy from light into a gain of potential energy?

Photosynthesis

In homo sapiens, the constitution of cells of the chromosome differs between the sexes, with females having two X chromosomes and males having one X chromosome and one Y chromosome.

True

There are two types of cells, eukaryotic and prokaryotic

True

DNA exists in the form of __________ strands of DNA coiled about each other.

double

The functional unit of heredity is the _____________.

gene

When sexual reproduction occurs in multicellular organisms, a process takes place before cells fuse whereby a cell is left with half of its chromosomes, enabling the creation of a cell with a characteristic chromosome number. What is this process called?

meiosis

DNA functions in the transfer of information from nucleus to cytoplasm by way of _______________.

ribonucleic acid

A cell membrane is ______________?

semipermeable

All of the following are similarities between unicellular organisms and multicellular organisms, except _____________.

size

The major parts of a cell are the ______________?

surrounding membrane, cytoplasm and nucleus