Biology 1101 Exam 3

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Cellular respiration deals with the immediate release

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1

Cellular respiration deals with the immediate release

False

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2

Glucose → pyruvic acid, ATP, NADH

Glycolysis

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3

Pyruvic acid → ATP, NADH

Krebs cycle

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4

NADH → ATP, H20, CO2, H+ (Proton Gradient)

Electron Transport Chain

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5

What molecule does glycolysis begin with?

glucose

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6

Name the two molecules that produced during glycolysis

Pyruvic acid & ATP

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7

Where does glycolysis occur in the cell?

cytoplasm

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8

What molecule does the Krebs cycle begin with?

Pyruvic acid

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9

Name the two molecules that are produced during the Krebs cycle.

ATP and NADH (molecule that carries electrons)

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10

Where does the Krebs cycle occur in the cell?

Mitochondria

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11

What molecules are produced during the Electron Transport Chain?

ATP, Water, and CO2

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12

What molecule is used to produce this?

High energy electrons from NADH

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13

Where does the Electron Transport Chain occur in the cell?

Mitochondria

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14

In what part of the mitochondria are the protein complexes found?

inner membrane of the mitochondria

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15

If NADH is the substrate, then what is the product?

If NADH is the substrate, the product is NAD+.

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16

Where do the electrons of NADH go?

The electrons from NADH travel through the electron transport chain (ETC) in the inner mitochondrial membrane, ultimately ending up at oxygen (O2), where they combine with protons (H+) from the surrounding medium to form water (H2O).

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17

Where do the protons go?

The protons (H+) from NADH are pumped across the inner membrane into the intermembrane space, creating a proton gradient.

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18

Describe the proton gradient

The proton gradient is a buildup of protons on one side of a inner mitochondrial membrane, creating a concentration difference

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19

Where is the proton gradient located in mitochondria?

The proton gradient is located in between the intermembrane space and the mitochondrial matrix

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20

What is ATP synthase?


ATP synthase is an enzyme responsible for producing ATP.

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21

Where is ATP synthase found in mitochondria?

It is found embedded in the inner mitochondrial membrane.

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22

How does ATP synthase make ATP?

ATP synthase makes ATP by using the energy from protons flowing back across the inner mitochondrial membrane to bind ADP and inorganic phosphate (Pi) together, forming ATP.

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23

What protects the seed?

Seed Coat

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24

What is the purpose of a flower on a plant?

To attract pollinators & Sexual Reproduction

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25

If an animal eats a fruit, what happens to the seed?

It stays intact

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26

True or False: Leaves can be modified based on the environment

True

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27

What is the difference between sepals and petals?

Sepals protect the flower, while petals attract pollinators

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28

True or False: Endosperm gives nutrients to the embryo

True

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29

What is a main function of a stem?

Storing nutrients

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30

What are the ways that seeds spread?

Wind, Scat, and Sticking to fur

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31

What are the parts of a seed?

Seed coat, endosperm, and plant embryo

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32

True or False: Fats are found in roots.

False

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33

What part of the flower develops into a fruit?

The ovary

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34

True or False: Genetic modification is the same as genetic engineering

False

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35

True or False: Root hairs are to roots as villi are to the small intestines

True

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36

Identify two functions of roots.

Anchor the plant to its surface (tap root) and absorbs water and nutrients from the soil (lateral roots w/ root hairs)

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37

What type of food molecule is food in roots?

Starch/carbohydrate

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38

Xylem

transports water and minerals from roots to leaves and flowers

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39

Phloem

carries food made in the leaves through the stems to the roots and other parts of the plant

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40

In what part of the plant does photosynthesis

in leaves primarily

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41

Stamen are the what part of the flower and contain what?

They are the male part of the flower and contain pollen (sperm)

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42

Carpel are the what part of the flower and contains what?

Carpel are the female part of the flower and contains the pollen tube which allows the pollen to travel to the ovary

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43

What gas do plants “breathe” in?

CO2

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44

How do the plants breathe this gas in?

Through the stomata

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45

Glucose has the chemical formula: C6H12O6. What atoms found in glucose are provided by this gas?

C+O

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46

How do plants obtain water?

By their roots

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47

What atoms are found in glucose (C6H12O6). What atoms found in glucose are provided by the water?

H + O

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48

What is the name of the light-absorbing pigment in cholorplasts?

Chlorophyll

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49

What is fiber?

An indigestible micronutrient/material

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50

What foods contain fiber

Any plant

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51

What does our body break starch into?

Glucose

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52

How do our cells use glucose?

To make ATP through cell respiration

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53

What is the chemical equation for photosynthesis?

CO2 + H20 + Sunlight → glucose & O2

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54

What two reactants of the photosynthesis equation are products of cell respiration?

CO2 + H2O

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55

What are the two major reactions that make up photosynthesis?

Light-dependent & light-independent

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56

What is another name for the light-independent reaction?

Calvin cycle

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57

What is the site of the light-dependent reactions?

The thylakoid of cholorplast

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58

What the products of the light dependent reactions?

ATP, NADPH, & O2

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59

What products from the light-dependent reactions are used for the Calvin cycle?

ATP & NADPH

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60

What is the location of the light-independent reactions?

Stroma of chloroplast

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61

What is the source of energy for the Calvin cycle?

ATP

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62

What is the product of the Calvin cycle?

Glucose

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63

Based on the equation of photosynthesis, what is the product from the light-dependent reactions?

O2

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64

Based on the equation of photosynthesis, what is the product from the Calvin cycle?

Glucose

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65

What is the chemical equation for cell respiration?

Glucose + O2 → ATP, CO2 & H20

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66

What two reactants of the cell respiration equation are products of photosynthesis?

Glucose & O2

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67

Insulin is to the ______ as bile is to the ______

Pancreas; liver

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68

What are the characteristics of fiber?

It is a micronutrient, it is cellulose in plants, and it binds to cholesterol and removes it

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69

What protects stomach cells during digestion?

Mucus

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70

Stomata is what to plants?

Pores/Lungs

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71

What do the upper layer of a leaf cells (epidermis) secrete?

a waxy substance called a cuticle

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72

Why do the epidermis cells secrete this?

To prevent water loss

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73

When the stomata closes, it means what?

Not a lot of water is present

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74

When the stomata opens, it means what?

A lot of water is present

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75

Electron Transport Chain characteristics…

Oxygen pulls protons through ATP synthase, the conversion of NADH and NAD+, the accumulation of H+ (proton gradient), occurs in the intermembrane

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76

Which macro-molecule is responsible for disassembling and reassembling?

Proteins

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77

True or False: Protein complexes are found in the matrix of the mitochondria

False

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78

Where are protein complexes found in the mitochondria?

The lining of the intermembrane

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79

Where do electrons of NADH go? Protons also go here.

Protein complexes

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80

What regulates the opening between the esophagus and the stomach, in which it prevents the “back flow” of chyme

Sphincter

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81

Where is bile stored?

Gallbladder

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82

Where is bile secreted?

Liver

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83

What is the function of bile?

Breaking down lipids/fats

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84

True or False: Glycolysis, process of cell respiration, happens in all organism on earth, oxygen or not.

True

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85

What is the enzyme in the mouth that begins immediate digestion of carbohydrates?

Amylase

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86

What is Peristalisis?

a series of involuntary muscle relaxations and contractions that moves food

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87

True or False: Carbon Dioxide is a byproduct of cell respiration

True

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88

What byproducts of cell respiration do we not use?

H2O and CO2

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89

NADH donates what to the Electron Transport Chain?

Electrons and Protons

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90

True or False: The stomach secretes mucus

True

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91

What two tissues of the body system secrete enzymes, which are a part of their chemical digestion

Pancreas & stomach

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92

The electron transport chain produces what?

ATP & Proton gradient

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93

True or False: Without oxygen, no H+ or electron flow since oxygen “catches” the H+ electrons

True

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94

What carbohydrates are more beneficial to our bodies?

Complex

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95

What binds cholesterol and removes it?

Fiber

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96

True or False: Cells do not extract energy to make ATP

False

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97

What is the most immediate source of energy?

Simple carbohydrate

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98

What is found in chyme?

Enzymes, acid, mucus

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99

Binging food and purging can affect/damage what?

The oral cavity and the esophagus

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100

What is the Proton gradient?

The accumulation of H+ in the intermembrane

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