Science

Question 0

The layer of skin in which melanin producing cells are found is the

Answer 0

Epidermis

Question 1

The separation of DNA fragments based on their size is called?

Answer 1

Electrophoresis

Question 2

Some damaged cells in the body undergo a process of programmed cell death that is called

Answer 2

Apoptosis

Question 3

Cystic fibrosis is a recessive disease in humans. Based on the principle of classical Mendelian genetics, what is the probability that a child will be born with the disease if one parent is a carrier of the trait and the other parent is homozygous dominant?

Answer 3

0%

Question 4

The process of bone formation in the fetus in which cartilage is absent is know as

Answer 4

Intramembranous ossification

Question 5

A symbiotic relationship between two organisms in which one partner benefits, while the other is harmed is called

Answer 5

Parasitism

Question 6

Which of the following immune cells are known to be inherently phagocytic?

Answer 6

Neutrophils and macrophages

Question 7

The ability to perform photosynthesis is present in which of the following kingdoms

Answer 7

Mineral, Protista, and Plantae

Question 8

Bone tissue remodeling is a function of which of the following

Answer 8

Osteoblasts and osteoclasts

Question 9

In the three domain have more biochemical similarities with which of the following

Answer 9

Eukaryotes

Question 10

Which of the following are functions of the kidney

Answer 10

Renal resorption, renal excretion, hormone secretion, and filtration

Question 11

During photosynthesis the light-dependent reactions take place in the

Answer 11

Chloroplast

Question 12

The second law of thermodynamics states that

Answer 12

All systems have a tendency to move towards disorder

Question 13

During the cell-cycle, cells carry out their normal functions and double their number of organelles in what stage?

Answer 13

Interphase

Question 14

The region of the heart that initiates the heartbeat is the

Answer 14

Sinoatrial node

Question 15

The organelle inside of the cell that breaks down toxic chemicals is the

Answer 15

Peroxisome

Question 16

The inability of chromosomes to separate properly during anaphase is known as

Answer 16

Nondisjunction

Question 17

The first macromolecule that formed on Earth was

Answer 17

RNA

Question 18

The developing embryo is called a____ and undergoes the 16-cell phase and the 32-cell phase

Answer 18

Morula

Question 19

_______ is the final electron acceptor in the electron transport chain

Answer 19

Oxygen

Question 20

Inside the cell, ribosomes are produced by which of the following?

Answer 20

Nucleolus

Question 21

Unicellular organisms are found in all of the following kingdoms

Answer 21

Monera, Protista, and Fungi

Question 22

Which of the following are pyridmidine bases found in nucleic acids

Answer 22

Thymine, Uracil, and Cytosine……..

not adenine

Question 23

The process by which embryonic cells begin to differentiate into their final cell types during development is called

Answer 23

Induction

Question 24

Which of the following is a component of the cell's cytoskeleton?

Answer 24

Microfilaments, Microtubules, Intermediate filaments, and Tubulin

Question 25

In the DNA molecule the base pairs are held together by

Answer 25

Hydrogen bonds

Question 26

During human fertilization sperm cells bind to the _____ of the egg

Answer 26

Zona pellucida

Question 27

According to the principle of _____ , speciation is a slow process that occurs in a uniform progression over time

Answer 27

Gradualism

Question 28

During DNA replication, ______ adds new nucleotides to the growing DNA strand that are complementary to the parent strand.

Answer 28

DNA polymerase

Question 29

Involuntary muscles that do not contain strait ions are called

Answer 29

Smooth muscle

Question 30

Stem cells that have the ability to differentiate into all types of human tissue are

Answer 30

Totipotent

Question 31

Multicellular bodies, movement, and heterotrophy are characteristics of which of the following kingdoms

Answer 31

Animalia

Question 32

Premature male pattern baldness is caused by a gene located on the

Answer 32

X chromosome

Question 33

________ enzymes have multiple binding sites

Answer 33

Allosteric

Question 34

In a type III survivorship cure, mortality occurs

Answer 34

Early in life Type I = die late in life Type II = Constant rate regardless of age

Question 35

Alleles are

Answer 35

Different copies of the same gene

Question 36

The innermost layer of meninges is the

Answer 36

Pia mater

Question 37

A windy ecosystem that receives low levels of annual precipitation and has frozen soil year-round is referred to as a

Answer 37

Tundra

Question 38

which of the following is true of the digestive, respiratory and urinary systems

Answer 38

They maintain the balance of substances in the blood

Question 39

Inside the cell proteins are synthesized by what organelle(s)

Answer 39

Ribosomes

Question 40

The carbon atom is located in Group 4A of the periodic table. Carbon can from

Answer 40

3 triple bonds and ionic bonds