Human Bio Exam 1

There are how many different types of amino acids

20

How many bones are in the fully formed human skeleton

206

What type of fiber allows tissue to easily stretch and recoil

elastic

A pure substance that cannot be broken down into another substance is known as an

element

Which layer of the integument contains stratified squamous cells

epidermis

What type of tissue covers body surfaces or lines cavities

epithelial

In terms of classification humans belong to which domain

eukarya

Glucose moves through a protein transporter down its concentration gradient into the cell. This is an example of ___

facilitated diffusion

Each carbon atom can share pairs of electrons with as many as ___ other atoms

four

A phospholipid molecule contains a "head" portion that

is hydrophilic

A prokaryotic cell has all of the following except

a nucleus inside a membrane

The stomach and liver are located in which body cavity

abdominal

A buildup of H+ in the blood will lead to

acidosis

Which transport requires ATP utilization

active transport

The portion of the skeleton that includes bones of the limbs, shoulder and hips is classified as the

appendicular skeleton

The type of bone that forms the shaft of long bones is known as

compact bone

Which portion of nerve cells receives incoming messages

dendrite

Which bone is found on the "thumb side" of the forearm

radius

In what portion of a eukaryotic cell is the majority of DNA isolated

nucleus

A nucleotide is composed of at least one sugar, one phosphate group, and

one nitrogen containing base

Positive feedback systems play a role in

child birth

What structure connects a muscle to a bone

tendon

With each turn of the Krebs cycle

NADH and FADH2 are produced

Muscle that is striated and voluntary is

Skeletal only

A system that compensates for pH fluctuations by donating or accepting H+ is known as a

buffer

Bone tissues is a storage area for

calcium

A computer programmer complains of pain in his wrist and numbness and tingling of his fingers. He likely suffers from

carpal tunnel syndrome

Which cells supply nutrients to and remove wastes from nerve cells

glial

What molecule is the body's main energy source

glucose

The most extreme form of body temperature increase is

heat stroke

Which element is not one of the four most common elements found in organisms

helium

Exocrine glands secrete all of the following EXCEPT

hormones

Which type of bond is responsible for the linking together of two water molecules

hydrogen

The chemical reactions in cells are called

metabolism

Which statement is true of mitochondria

mitochondria possesses their own DNA

The bonding of two or more atoms creates a

molecule

When an atoms outer electron shell is filled the atom is

most stable

Membranes that line cavities and tubes in the digestive and respiratory systems are classified as

mucous

During the remodeling process, which cells break down the bone matrix

osteoclasts

The production of ATP in the mitochondria requires

oxygen

The sequence of amino acids in a protein represents its

primary structure

Most enzymes are which type of organic molecule

proteins

An acid is a substance that donates a

proton

A patient with joint pain was sent to the hospital for lab work. The results showed significant over activity of her immune system. Based on these results, the most likely diagnosis is

rheumatoid arthritis

Which skeletal structure is NOT part of the axial skeleton

scapula

In science the word theory

signifies that a hypothesis has been tested and proven over a period of time

Plants store large amounts of carbohydrates in the form of

starch

The most common type of joint in the human body is a

synovial joint

Which part of a synovial joint secretes lubricating fluid

synovial membrane

A red blood cell is placed in a solution. After a period of time, the cell has shrunk to half of its original size. Which of the following is true

the cell was placed in a hypertonic solution

Which statement is true of electron shells

the innermost shell can hold up to two electron

Homeostasis refers to

the maintenance of a constant internal state

Energy flows into the biosphere from

the sun

How do hydrophilic molecules interact with water

they are attracted to water

The heart is located in which body cavity

thoracic

Which bone is NOT part of the pectoral girdle or upper limbs

tibia

Which form of organization is classified between cell and origin

tissue

Stem cells can be found in

umbilical cord blood

Fats that stay liquid at room temperature are

unsaturated

Two solutions A and B are separated by a membrane, which is permeable to water but not salts. Solution A is 2% NaCl solution, while solution B is 3% NaCl solution. Which of the following will occur?

water will move from side A to side B