LIFE PROCESSES

Question 1

Life processes

Answer 1

Life processes are series of actions, such as movement, respiration, sensitivity, growth, reproduction, excretion and nutrition that are essential for life processes to sustain.

Question 2

nutrition

Answer 2

A process to transfer a source of energy from outside the body of Organism which we call food to inside a process we commonly call nutrition.

Question 3

Molecular movement

Answer 3

Movements over very small scales will be invisible to the naked eye. The movements of various molecules from one place to another inside the cell at in between cells are known as molecular movement.

Question 4

Respiration

Answer 4

The process of acquiring oxygen from outside the body and to use it in the process of breakdown of food sources who cellular needs, is what we call respiration.

Question 5

Digestion

Answer 5

The process of converting complex substances into simple absorbable form

Question 6

Excretion

Answer 6

The process by which organisms rid themselves off the these products and of the nitrogenous byproducts of metabolism.

Question 7

Enzymes

Answer 7

Soluble protein molecules which speed up the chemical reactions and breakdown the complex substances into simpler substances before it can be used for growth. For this organisms use of biocatalysts called enzymes.

Question 8

Autotrophs

Answer 8

Some organisms use simple food material from inorganic food sources in the form of carbon dioxide and water. These animals are called autotrophs and include plants and bacteria.

Question 9

Heterotrophs

Answer 9

Organisms which depend on other organisms for food.

Question 10

Stomata

Answer 10

They are pores so on the surface of the leaf which is responsible for the exchange of gases and the loss of water through transpiration in plants.

Question 11

Guard cell

Answer 11

They are the cells that surround the stomata and control the opening and closing of it.

Question 12

Mineras that are taken up from the soil buy plants

Answer 12

nitrogen, iron, phosphorus and magnesium

Question 13

Types of heterotrophic nutrition

Answer 13

1. holozoic nutrition which is the mode of nutrition in which your organisms take in food and break it down inside the body
2. Side providing nutrition are the organisms which breakdown the food outside the body then absorb it.
3. Parasitic nutrition are some organisms in which nutrition is derived from plants or animals without killing them.

Question 14

The differences in the mode of heterotrophic nutrition in fungi, parasites and mammals can be attributed to:-

Answer 14

Difference in body design, availability of food, type of food

Question 15

why are plants called autotrophs

Answer 15

Plants are called autotrophs because they derive their energy directly from the sun and produce food for themselves.

Question 16

Why is photo synthesis important for auto trophs

Answer 16

The main purpose of photosynthesis and other trials is to fulfill the plans to carbon and energy requirement.

Question 17

How does amoeba take in food?

Answer 17

I’m able to take some photos with the pseudopodia and then forms a foot vehicle inside the food vacuole it breaks down the food into simpler substances and then diffuses it into the cytoplasm.

Question 18

How does paramoecium take in food?

Answer 18

it is a unicellular Organism that has a definite shape and the food is taken in a specific spot.

Question 19

Define alimentary canal

Answer 19

Hello tube extending from the mouth to the anus

Question 20

Define salivary amylase

Answer 20

The saliva contains an enzyme called salivary amylase breaks down starch which is complex molecule to do simple sugar

Question 21

Define oesophagus

Answer 21

Turn the mode, the food is taking to the stomach through a foot pipe

Question 22

Role of sphincter muscle

Answer 22

The exit of food from the stomach is regulated by a splinter muscle which place is it in small amounts into The small intestine

Question 23

Describe the small intestine

Answer 23

The small intestine is the longest part of the elementary canal. The land of the small intestine differs from the type of food eaten by animals. Example herbivores have longer in this times since grass which is cellulose is hard to digest and carnivores has smaller in distance since meat is easier to digest. The small intestine is the sight of complete digestion of carbohydrates, proteins, and fats. It receives the secretions of the liver and pancreas for this purpose.The walls of the small intestine contains glands which secrete intestinal juice. The enzymes present in it finally convert proteins to amino acids, complex carbohydrates into glucose and fats into fatty acids and glycerol .

Question 24

Describe villi

Answer 24

The inner lining of the small intestine has numerous fingerlike projections called villi. Which are used to increase the surface area for absorption. The villi are you supplied with blood vessels which takes up some food to each and every cell of the body. Where it is utilised for the obtaining energy building up your shoes and repair of old tissues.

Question 25

Describe the anal Sphincter

Answer 25

The unsold food is sent to the large intestine where the worlds absorb more water from the material. The rest of the material is removed from the body through the anus. The exit of this waste material is regulated by the anal sphincter.

Question 26

Describe pancreatic juice

Answer 26

The pancreas secretes pancreatic juice which contains enzymes like trypsin for digesting proteins and Lipsae for breaking down emulsify fats

Question 27

Describe bile juice

Answer 27

The food coming from the stomach is acidic and has to be made alkaline for this pancreatic enzymes to act. Bile juice coming from the liver accomplishes this in addition to acting on fats. Set a person in the intestine in the form of large globules which make it difficult for enzymes to act on them. Bile salts. Break them down into smaller globules increasing the efficiency of enzyme action