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Science > Questions For The Summer Test > Flashcards

Questions For The Summer Test Flashcards

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Biology 101 flashcards
1
Q

What did Alexander Fleming accidentally discover

A

He accidentally discovered penicillin by observing that bacteria didn’t grow near mold

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2
Q

How can you tell something is a living thing

A

It is made of cells
nutrient:how they make get food
Excretion:how they get rid of waste
Response:how they react to changes in there surroundings
Reproduction:how they make more of their own kind

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3
Q

What are animals called with a back bone

A

Vertebrates

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4
Q

What are animals called without a back bone

A

Invertebrates

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5
Q

How do u prepare an onion cell

A

Cut an onion and peel thin layer of cells off and place a pice under a microscope. Put a drop of iodine stain on the cheek and place a coverslip on top of it. Place the slide on the stage of the microscope and secure with clips. Switch on the microscope and put it to the low power objective lens and move the stage using the course focus wheel. Look through the eyepiece lens and use the course wheel to make the onion cells visible.

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6
Q

What is a cell membrane

A

It controls what enters and leaves the cell

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7
Q

What is a nucleus

A

It is the control centre of the cell

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8
Q

What is cytoplasm

A

It is a watering gel in which cell reactions occur in. It also supports the cell

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9
Q

What is a cell wall

A

A cell wall is found outside the membrane of plant cells. It is made of cellulose and gives strength to plant cells

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10
Q

What is a vacuole

A

It is a storage area containing liquid. It pushes against the cell wall to give support to plant cells

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11
Q

What is amylase

A

Amylase in Silvia digested the starch into maltose

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12
Q

Name 3 blood vessels

A

Arteries,Veins,Capillaries

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13
Q

What does the heart do

A

It pumps blood around the body

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14
Q

What is energy

A

Energy is the ability to do work and it is measured in the unit Joule(J)

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15
Q

What is the principle of conservation energy

A

The principle of conservation energy is that energy cannot be created or destroyed it can only be changed from one form to another

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16
Q

Name the 8 forms of energy

A

Kinetic
Potential
Heat
Light
Sound
Chemical
Electrical
Nuclear

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17
Q

What is renewable energy

A

Renewable energy will not run out examples of renewable energy is wind,solar,hydroelectric,biomass and geothermal

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18
Q

What is non-renewable energy

A

Non-renewable energy is energy that will run out examples of these are coal,oil,gas and peat. These are all fossil fuels

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19
Q

What are fossil fuels

A

Fossil fuels are the remains of dead organisms from millions of year ago

20
Q

What are advantages of nuclear energy

A

Advantages of nuclear energy are I does not release CO2 and it produces a large amount of energy and only uses a small amount of fuel

21
Q

What are disadvantages of nuclear energy

A

Disadvantages of nuclear energy is that it produces radioactive waste and there is a danger of accidents and explosions

22
Q

What does the universe consist of ?

A

The universe consists of the area of space containing the galaxies,stars and solar systems

23
Q

What is the Galaxy

A

A galaxy is a collection of millions of stars along with gases and dust held together by gravity forces

24
Q

What is Pluto

A

Pluto is considered a planetoid (dwarf planet) as it is too small to be a planet but too large to be an asteroid.

25
Q

What keeps the plants in orbit of the sun?

A

The force of gravity.

26
Q

Define the term cells

A

The basic building blocks of living things

27
Q

Define the term nutrition

A

The way in which living things get their food

28
Q

Define the term excretion

A

The way in which living things get rid of wastes that they produce

29
Q

Define the term response

A

The way in which living things react to changes in their surroundings

30
Q

Define the term reproduction

A

The way in which living things produce new living things

31
Q

Define the term bacteria

A

Tiny microscopic living things. Some cause disease, some cause decay, some are used to produce valuable substances

32
Q

Give me 3 examples of fungi

A

Mushrooms, moulds and yeast

33
Q

Give me 3 examples of plants

A

Trees, grasses, flowers

34
Q

Give me 3 examples of animals

A

Humans, fish, insects

35
Q

Define the term biodiversity

A

Biodiversity means the range of living things.

36
Q

Define the term cells

A

Living things are made of cells. Cells are the basic building blocks of all living things.

37
Q

Name the 3 main parts in an animal cell

A

• A cell membrane
• A nucleus
• Cytoplasm.

38
Q

What is a cell membrane and what does it do

A

The cell membrane is a very thin layer that surrounds the cell. Retains cell contents and
Controls what passes in and out of the cell

39
Q

What is the nucleus and what is it’s importants

A

The nucleus is normally round.
Its function is to act as the control centre of the cell.

40
Q

Define the term cytoplasm and explain its purpose

A

Cytoplasm is a watery liquid found between the nucleus and the cell membrane. It Carries out some cell reactions and it Supports tiny cell structures

41
Q

What does the mitochondria do

A

Supplies energy to the cell (by respiration)

42
Q

Name the five main parts of a planet cell

A

• A cell wall
• A cell membrane
• A nucleus
• cytoplasm
• A vacuole.

43
Q

Define the term a cell wall and explain its use

A

A cell wall is found outside the cell membrane in plant cells. It Gives strength to the cell

44
Q

What is the function of the chloroplast

A

Makes food (by photosynthesis)

45
Q

What is a vacuole and what is its main function

A

A vacuole contains liquid. If the vacuole is full of liquid, it forces the cytoplasm to push out against the cell wall. It Gives strength to the cell

Science (21 decks)

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