Enzymes Worksheet

Photosynthesis Worksheet

Month Assessment of Biology (Photosynthesis - Plant Nutrition)

Name:_______________________                           Class:__________________

Q1.  Scientists investigated how temperature affects the rate of photosynthesis.
The scientists grew some orange trees in a greenhouse.They used discs cut from the leaves of the young orange trees.The scientists used the rate of oxygen production by the leaf discs to show the rate of photosynthesis.

(i)  The leaf discs did not produce any oxygen in the dark. Why? (2)

_{_________________________________________________________________________________________________________________________________________________________________________________________________________________________________}           

(ii)     The leaf discs took in oxygen in the dark. Explain why.  (2)

_{______________________________________________________________________________________________________________________________________________________________________________________________________________________________}

In their investigation, the scientists measured the rate of oxygen release by the leaf discs in the light. The scientists then measured the rate of oxygen uptake by the leaf discs in the dark.

The graph shows the effect of temperature on

•   oxygen production in the light

•   oxygen production in the light added to oxygen uptake in the dark.

Use the information from the graph to answer each of the following questions.

(i)    Describe the effect of temperature on oxygen production in the light.(2)

_{________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________}

(ii)   Explain the effect of temperature on oxygen production in the light when the temperature is increased:

from 25 °C to 35 °C _{_________________________________________________________________________________________________________________________________________________________________________________________________________________________________}

from 40 °C to 50 °C.

_{_________________________________________________________________________________________________________________________________________________________________________________________________________________________________}

Digestive System Worksheet

MULTIPLE CHOICE:

1. Which of the following is not an accessory organ

a-pancreas     b-liver     c-esophagus     d-gallbladder

2. Which of the following is not a tissue layer of the alimentary canal

a-mucosa     b-muscularis     c-secretin     d-serosa

3. Which sphincter is associated with the stomach

a-oddi     b-pyloric     c-internal involuntary     d-external voluntary

4. Which is not a salivary gland

a-parotid gland     b-sublingual gland     c-maxillary gland     d-submandibular gland

5. Which word does not belong with the liver

a-right lobe     b-hepatocyte     c-common bile duct     d-hydrochloric acid

6. Each of the following organs is a component of the digestive tract except one. Identify the exception.

A) spleen          B) esophagus    C) stomach       D) colon            E) pharynx

7.  Which of the following is an accessory organ of digestion?

A) esophagus    B) colon            C) pancreas      D) spleen          E) stomach

8. “Digestion”, alone, refers to the (very specific answer)

A) absorption of nutrients in the gut.               B) progressive dehydration of indigestible residue.

C) input of food into the digestive tract.          D) chemicall/mechanical breakdown of food.

E) mixing of nutrients with digestive enzymes.

8. Which of the following is NOT a digestive function?

A) filtration     B) absorption    C) mechanical processing          D) ingestion      E) compaction

9.  The mucous epithelium is a component of the

A) muscularis.               B) adventia.                  C) submucosa.               D) mucosa.        E) serosa.

19. Contraction of the __________ layer of the intestinal wall functions to change the shape of the intestinal
      lumen and moves food through its length.

A) mucosa                    B) submucosa                C) adventitia                D) serosa          E) muscularis

10. Large blood vessels and lymphocytes are found in the

A) muscularis.               B) mucosa.                    C) serosa.                     D) adventitia.   E) submucosa.

11. Waves of muscular contractions that propel the contents of the digestive tract from one point to another is/are

A) segmentations.         B) mastications.            C) pendulum                  D) peristalsis.   E) churning

12.  The functions occurring within the oral cavity include

A) analysis of material before swallowing and partial digestion of proteins and carbohydrates.

B) lubrication.

C) mechanical processing of food.

D) B and C only.

E) all of the above.

13.  __________ types of salivary glands secrete into the oral cavity.

A) Five                         B)  Three                      C)  Four                        D)  Two                        E)  One

14.  Teeth are similar to bone and contain a mineralized matrix called

A) pulp.                        B) enamel.                     C) dentin.                     D) periodontium.           E) cementum.

15.  The crown of a tooth is covered by

A) pulp.                        B) dentin.                     C) cementum.                D) enamel.                    E) periodontium.

16.  During swallowing,

A) the larynx elevates.             B) the upper esophageal sphincter opens.

C) the soft palate elevates.      D) the epiglottis closes.                                    E) all of the above occur.

17.  Secretions from the salivary glands

A) are digestive enzymes.                                             B) help to lubricate the oral cavity and its contents.

C) help to control bacterial populations in the mouth.   D) do B and C only.

E) do all of the above.

18.  The __________ teeth are used for crushing or grinding food.

A) incisors                    B) molars                      C) bicuspids                  D) canines                   E) cuspids

19.  The __________ are pointed teeth that are adapted for tearing and shredding.

A) incisors                    B) bicuspids                  C) molars                      D) cuspids                    E) wisdom teeth

20.  There are ________ primary teeth and __________ permanent teeth

A) 20, 32                     B)  32,20                      C)  30, 20                     D)  20, 30                     E)  34, 24

21.  The esophagus

A) is a muscular tube.                                       B) extends from the oropharynx to the stomach.        

C) functions in digestion of carbohydrates.      D) has a thick lining that will tolerate stomach acid.

E) exhibits all of the above.

22.  Functions of the stomach include

A) mechanical breakdown of food.       B) storage of recently ingested food.

C) denaturation of proteins.                 D) initiation of protein digestion.                     E) all of the above.

23.  The portion of the stomach that connects to the esophagus is the

A) cardia.                     B)  body.                       C)  pylorus.                   D)  fundus.      E)  antrum.

24.  The bulge of the greater curvature of the stomach superior to the esophageal junction (or the big wheel) is the

A) pylorus.                    B)  fundus.                    C)  antrum.                  D)  cardia.       E)  body.

25.  The large area of the stomach between the fundus and the J-curve, where most digestion occurs is the

A) pylorus.                    B)  fundus.                    C)  cardia.                    D)  antrum.       E)  body.

26.  The curved, tubular portion of the stomach is the

A) fundus.                    B)  body.                       C)  pylorus.                   D)  cardia.        E)  antrum.

27.  Gastric pits are

A) holes in the body of the stomach.                                                    B) located in the esophagus.

C) involved in absorption of liquids from the stomach.                          D) areas where proteins are digested.

E) pockets in the lining of the stomach that contain secretory cells.

28.  The enzyme pepsin digests

A) vitamins.                  B) carbohydrates.                     C) proteins.                   D) lipids.           E) nucleic acids.

29.  Plicae Circularis and intestinal villi

A) produce new cells for the mucosa of the small intestine.

B) carry products of digestion that will not pass through the walls of blood capillaries.

C) produce hormones to aid in digestion.

D) secrete digestive enzymes to aid in digestion.

E) increase the surface area of the mucosa of the small intestine & aid in absorption.

30.  The portion of the small intestine that is attached to the pylorus of the stomach is the

A) duodenum.               B) colon.                       C) jejunum.                   D) ileum.                       E) cecum.

31.  The middle portion of the small intestine is the

A) duodenum.               B) jejunum.                   C) pylorus.                    D) ileum.                       E) cecum.

32.  The portion of the small intestine that attaches to the large intestine is the

A) cecum.                     B) ileum.                       C) appendix.                 D) duodenum.                E) jejunum.

33.  Intestinal hormone that stimulates the pancreas to release a watery secretion that is high in bicarbonate ion is

A) enterocrinin.            B) secretin.       C) cholecystokinin (CCK)                       D) gastrin.                    E) GIP.

34.  An intestinal hormone that stimulates the gall bladder to release bile is

A) secretin.                  B) cholecystokinin (CCK)           C) GIP.                         D) gastrin.                    E) enterokinase.

35.  The fusion of the hepatic duct with the cystic duct forms the

A) bile canaliculus.       B) porta hepatis.           C) common pancreatic duct.

D) common bile duct.    E) hepatic portal vein.

36.  The human liver is composed of 4 lobes.  Which is lobe is larger…(A) Right Lobe….(B) Left Lobe?

37.  An enzyme that will digest proteins into polypeptides is

A) maltase.       B)  lipase.         C)  trypsin.       D)  amylase.      E)  nuclease.

38.  The enzyme amylase helps to digest

A) carbohydrates.        B) fats.             C) proteins.       D) lipids.           E) nucleic acids.

39.  During the cephalic phase of gastric secretion,

A) production of gastric juice slows down.                    B) secretin inhibits parietal and chief cell action.

C) the stomach responds to distention.                         D) the intestine reflex inhibits gastric emptying.

E) there is an increased flow of action potentials along the vagus nerve to the stomach.

40.  Decreased levels of bile salts in the bile would interfere with

A) digestion of vitamins.                       B) fat digestion.           C) protein digestion.

D) digestion of disaccharides.              E) digestion of complex carbohydrates.

41.  During defecation,

A) the external anal sphincter is consciously relaxed.

B) stretch receptors in rectal wall activate parasympathetic centers in the sacral region of the spinal cord.

C) stretch receptors in the rectal wall initiate a series of peristaltic contractions in the colon and rectum.

D) the internal anal sphincter relaxes.

E) all of the above occur.

MATCHING: (Words may be used more than once or NOT at all)

A-CECUM                     B-EPIGLOTTIS                        C-PERISTALSIS                                              D-12 FEET                     E-CHYME                                AB-5 FEET                                                     AC-MASTICATION              AD-PEYERS PATCHES  AE-GALLBLADDER                                     BC-SALIVARY AMYLASE         BD-20 FEET                BE-LIVER                    

CD-BOLUS                    CE-GLOTTIS                            DE-DUODENUM

42. Movement of food by a series of muscular contractions and relaxation

43. The ability to chew food is also known as…

44. This enzyme begins the chemical digestion of starchy foods

45. When swallowing food, first the soft palate rises so food won’t go up your nasal cavity then this structure
      bends over to cover glottis

46. This is the material that is ready to enter the small intestine which was converted
      by chemical & mechanical digestion into a semi-fluid paste of small food particles & gastric juice    

47. This is the first section that the material hits after it has left the small intestine and has entered the large
      intestine

48. This is how long the large intestine is in feet

49. The ileum is how long

50. This organs major function is to store and concentrate bile

51. This pouch-like structure is the first part of the large intestine

Match the structure of the digestive system with its function.

                                                            A. dehydration and compaction of indigestible materials in                                                                      preparation
52. Pancreas                                        for elimination

53. Liver                                              B. secretion of bile (important for lipid digestion), storage of  
54. Small Intestine                                  nutrients, many other vital functions

55. Esophagus                                      C. storage and concentration of bile

56. Gallbladder                                     D. transport of materials to the stomach

57. Stomach                                         E. secretion of buffers and digestive enzymes by exocrine cells;                                                    secretion of hormones by endocrine cells

                                                            AB. mechanical processing, moistening, mixing with salivary                                                                secretions

                                                            AC. chemical breakdown of materials by acid and enzymes;                                                                  mechanical processing through muscular contractions

                                                            AD. secretion of lubricating fluid containing enzymes                                                                            that break down carbohydrates

                                                            AE. enzymatic digestion and absorption of water, organic                                                                        substrates, vitamins and ions

                                                             BC. pharyngeal muscles propel materials into the esophagus

Respiratory System Worksheet

Respiratory System Worksheet
Match the structure to the number in the diagram. Make sure all numbers are correctly labeled. Fill in the table with the structure name and function. Turn in your homework with the worksheet.

Structure Number                                    Structure                                            Name Function
1
2
3
4
5
6
7
8
9
10
11


Answer the following questions:
1) What keeps food from going down our windpipe?



2) What role do red blood cells play in respiration?



3) How are plants our partners in breathing?



4) What is the purpose of the mucus in your nose?



5) How is the respiratory system linked to the cardiovascular system?

 Complete the following statements by inserting one of the words below in the answer blanks.

            cartilage                     moisten                      pressure                    voice box

            filter                            nostrils                       speak                         warm

            larynx                         pharynx                     vocal cords

Air enters the nasal cavity of the respiratory system through the _________.  The nasal cavity has several functions.  The major functions are to ______________, ________________, and ________________ the incoming air.  The passageway common to the digestive and respiratory systems, the ________________, is often called the throat; it connects the nasal cavity with the _____________ below.  Reinforcement of the trachea with ________________ rings prevents its collapse during _______________ changes that occur during breathing.  The larynx or __________________ is built from cartilage.  Within the larynx are the _______________________, which vibrate with exhaled air and allow an individual to ________________.

The figure below is a sagittal view of the upper respiratory structures.  Correctly identify all structures listed below.

                        nasal cavity                           vocal cords                            trachea

                        pharynx                                 oral cavity                              epiglottis

                        larynx                                     esophagus

           Using the key choices, select terms identified in the following descriptions by inserting the appropriate term in the answer blanks.

Key Choices:

            A.  alveoli                               D.  esophagus                      G.  trachea

            B.  bronchioles                       E.  pleura

            C.  epiglottis                           F.  bronchi

_____  1.  Smallest respiratory passageways.

_____  2.  Food passageway posterior to the trachea.

_____  3.  Closes off the larynx during swallowing.

_____  4.  Windpipe

_____  5.  Actual site of gas exchanges.

_____  6.  Membrane that lines the thoracic cavity and covers the surface of the lungs.

_____  7.  Tube that enters the right and left lungs.

       The figure below illustrates the gross anatomy of the lower respiratory system.  Label the areas/structure listed below.

            larynx                                     pleural space                                    lower lobe of right        lung

            trachea                                   diaphragm                                         bronchioles

            right bronchus                      upper lobe of right lung