Biology

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

Double

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

In humans, how do the sex chromosomes differ between males and females?

Females have two X chromosomes and males one X chromosome and one Y chromosome

The functional unit of heredity is the _____________.

Gene

__________ occurs when organisms of different species mate and form offspring.

Hybridization

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

Many animals protect themselves with an exoskeleton. Which of the following is an example of an animal with an exoskeleton?

Mollusk

Locomotion in Metazoa is usually due to the contraction of what?

Muscle

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

Natural Selection

Genes are located within the cytoplasm of the cell.

Nucleus

What it is the name given to specialized structures within cells responsible for carrying out specific functions such as providing energy and producing hormones?

Organelles

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

Oxygen and carbohydrates

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

The bodies of all insects have _______ major divisions.

3

How many chromosomes does an individual human person have?

46

A multicellular organism is:

A group of differentiated eukaryotic cells that work together to support the function of an organism

The term thallus refers to the plant-like structure of which of the following organisms?

Brown algae

Single-celled protists with animal-like behavior belong to the phylum _____________

Protozoa

Genetic information is transferred from the nucleus to cytoplasm by way of _______________.

Ribonucleic acid

A cell membrane is ______________?

Semipermeable

Sterile female honey bees are called ________________

Workers

In normal sexual reproduction, two mature gametes fuse to form a(n) _____________

Zygote

Which of the following organisms is a vertabrate?a.Frogs b.Insects c.Earthworms d.Sea stars

a. Frogs

Which of the following represents the largest group of biological classification? a. Kingdom b. Species c. Class d. Genus

a. Kingdom

There are two types of cells, eukaryotic and prokaryotic. Which of the following cellular structures are found in both types of cell? a.DNA b.Golgi apparatus c.Mitochondria d.Chloroplast

a.DNA

Which of the following is not part of the metabolic sequence? a. Photosynthesis b. Respiration c. Hydoplasm d. Digestion

c. Hydoplasm

All of the following are similarities between unicellular organisms and multicellular organisms, except _____________. a. Internal complexity b. Division of labor c. Size d. Ecological relationships

c. Size

Changes in the genetic makeup of an organism may be due to which of the following? a. New combinations of chromosomes b. Chromosome mutation c. Gene mututation d. All of the above

d. All of the above

Which of the following are NOT organelles found in animal cells? a. Nucleus and golgi apparatus b. Cellular membrane and cytoplasm c. Mitochondria and ribosomes d. Chloroplast and central vacuole

d. Chloroplast and central vacuole