Bio Exam 1

Question 1

What is the difference between a theory and a law?

Answer 1

A theory explains why something happens and a law describes what happens when certain conditions are present.

Question 2

What is the difference between Lysosomes and Peroxisomes?

Answer 2

Lysosomes kill and disinfect, peroxisomes carry out oxidative reactions using molecular oxygen.

Question 3

What is the difference between a theory, law and hypothesis?

Answer 3

Hypothesis is a tentative explanation for what was observed, Theory is concepts that join together two or more thorough hypotheses, Law is widely excepted set of theories.

Question 4

What are the 3 domains?

Answer 4

1. Domain Archaea
2. Domain Bacteria
3. Domain Eukarya

Question 5

Domain Archaea

Answer 5

Contain unicellular prokaryotes, live in extreme environments

Question 6

Domain Bacteria

Answer 6

Contains unicellular prokaryotes live in environments like skin in our mouths and intestines.

Question 7

Domain Eukarya

Answer 7

Contain unicellular and multicellular eukaryotes

Question 8

Prokaryotes are not……..

Answer 8

Domains

Question 9

Goes through all aspects of the experiment but is not exposed to the experimental variable

Answer 9

Control Group

Question 10

What is a PH of 4

Answer 10

Acid

Question 11

What is a PH of 7

Answer 11

Neutral

Question 12

What is a PH of 9

Answer 12

Base

Question 13

All organic molecules contain what?

Answer 13

Carbon and Hydrogen atoms

Question 14

What is the basic unit of all life?

Answer 14

Cells

Question 15

What is the difference between glycogen and starch?

Answer 15

Starch: Provides energy storage in plants
Glycogen: Provides energy storage in animals

Question 16

What is the difference between a population and an ecosystem?

Answer 16

Population: All members of a species within an area
Ecosystem: Community plus its physical environment

Question 17

………… is the maintenance of internal conditions within certain boundries

Answer 17

Homeostasis

Question 18

What is the permanent loss of species called?

Answer 18

Extinction

Question 19

What is the order of hierarchy?

Answer 19

Molecules
Cells
Tissue
Organs
Organisms
Population
Ecosystem

Question 20

Water repelling is…

Answer 20

Hydrophobic

Question 21

water loving is…

Answer 21

Hydrophilic

Question 22

Mutations lead to……

Answer 22

Natural selection

Question 23

natural selection leads to…..

Answer 23

Evolution

Question 24

What is the building block for proteins

Answer 24

Amino Acids

Question 25

When you combine amino acids and protein you get what?

Answer 25

Peptide

Question 26

What do you get when you put peptides together

Answer 26

Poly Peptide

Question 27

What do you get when you twist poly peptides together?

Answer 27

Proteins

Question 28

T or F we are all undergoing mutations everyday

Answer 28

True

Question 29

What is the basic unit of heredity

Answer 29

Genes

Question 30

……. Is a chemical reaction in which subunits are joined together by the formation of a covalent bond and water is produced during the reaction.

Answer 30

Dehydration reaction

Question 31

A …….… reaction is a chemical reaction in which a water molecules is added to break a covalent bond.

Answer 31

Hydrolysis

Question 32

Diffusion of water is

Answer 32

Osmosis

Question 33

Pinocytosis=

Answer 33

Drinking

Question 34

Phagocytosis=

Answer 34

Eating

Question 35

What are the 3 components of a nucleotide

Answer 35

Phosphate, sugar, and a base

Question 36

What are prions

Answer 36

Misfolded proteins

Question 37

Of the 4 organic molecules which is not a polymer?

Answer 37

Lipids

Question 38

What are the 4 organic molecules

Answer 38

Proteins, Lipids, Carbohydrates, nucleic acids

Question 39

What kingdom do we belong in?

Answer 39

Animal

Question 40

Isotonic means…

Answer 40

Equal pressure

Question 41

Adenine always matches up with…

Answer 41

Thymine

Question 42

What is the different between a community and an ecosystem?

Answer 42

A community is a collection of interacting populations within the same environment. An ecosystem is a community plus its physical environment.

Question 43

What are the major elements in the body?

Answer 43

Carbon Hydrogen Oxygen Phosphorus Nitrogen

Question 44

What is the difference between DNA and RNA

Answer 44

DNA: Genetic material that stores information for its own replication and for the sequence of amino acids in proteins RNA perform a wide range of functions within cells which include protein synthesis and regulation of gene expression.

Question 45

Water always moves towards the………

Answer 45

Hypertonic

Question 46

What is it called when the cell shrivels up and dies?

Answer 46

Crenantion

Question 47

Complementary means……

Answer 47

Complete

Question 48

What is the word for breaking down proteins

Answer 48

Denature

Question 49

What is the storage form of energy in animals

Answer 49

Glycogen

Question 50

What is the storage form of energy in plants

Answer 50

Starch

Question 51

What is the passing of genetic information from generation to generation is called….

Answer 51

Genes

Question 52

…… is found in cell walls of fungi and exoskeleton of some animals.

Answer 52

Chitin

Question 53

Two types of reactions…

Answer 53

Dehydration and hydrolysis reaction

Question 54

Facilitated means….

Answer 54

Make easy

Question 55

What are 2 characteristics of enzymes:

Answer 55

1. used to speed up chemical reactions in the body 2. They are not consumed

Question 56

What is the formula for glucose

Answer 56

C6 H12 O6

Question 57

What is another name for organic molecules?

Answer 57

Bio Molecules

Question 58

DNA has…….. and RNA has…….

Answer 58

1. thymine 2. Uracil

Question 59

Double ring=

Answer 59

Purines

Question 60

………….. is a chemical reaction in which subunits are joined together by the formation of a covalent bond and water is produced during the reaction

Answer 60

Dehydration reaction

Question 61

A………… is a chemical reaction in which a water molecule is added to break a covalent bond.

Answer 61

Hydrolysis Reaction

Question 62

……… is all the chemical reactions that occur in a cell.

Answer 62

Metabolism

Question 63

…………… is a process that converts solar energy into the chemical energy of carbohydrates

Answer 63

Photosynthesis

Question 64

The breakdown of food components(proteins, and dietary fats) into their simpler forms , which then can be used to provide energy and the basic building blocks needed for growth and repair

Answer 64

Catabolism

Question 65

The part of metabolism in which our body is built or repaired

Answer 65

Anabolism

Question 66

A membrane that allows only some substances and molecules to pass into or leave the cell.

Answer 66

Selectively-permeable membrane

Question 67

What is the major lipid found in cell membranes

Answer 67

Phospholipids

Question 68

Which domains do not have nuclei

Answer 68

1. Bacteria 2. Archaea

Question 69

………… are clusters of specific atoms bonded to the carbon skeleton with characteristic structures and functions.

Answer 69

Functional Groups

Question 70

What letter represents a functional group

Answer 70

R