first test of year 7 Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

organisms

A

things that have all the characteristics of life

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

cell

A

smallest unit of life

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

unicellular

A

living things that are made of only one cell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

multicellular

A

living things that are made up of two or more cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

homeostasis

A

an organism’s ability to maintain steady internal conditions when outside conditions change

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

binomial nomenclature

A

gives each organism a two word specific name

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

species

A

a group of organisms that have similar traits and are able to produce fertile offspring

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

genus

A

group of similar species

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

dichotomous key

A

a series of descriptions arranged in pairs that leads you to the identification of an unknown organism

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

cladogram

A

a branched diagram that shows relationships among organisms, including common ancestors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

light microscope

A

uses light and lenses to enlarge an image of an object

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

compound microscope

A

a light microscope that uses more than one lens to magnify an object

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

electron microscope

A

uses a magnetic field to focus a beam of electrons through an object or onto an object’s surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What characteristics do all living things share?

A

All living things have cells, can grow and develop, reproduce, respond to stimuli, maintain homeostasis, organization, and use energy.
cells- smallest unit of life and unicellular/multicellular
grow and develop- increase in size and as cell grows bigger
reproduce- organism makes another asexual- one parent sexual- two
respond to stimuli- reacting to changes- internal such as hungry- external such as getting tan
maintain homeostasis- able to maintain steady internal conditions when something changes
use energy- everything you do use energy
organization- all livings have structures that have specific functions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Why are things classified?

A

We classify things because it makes it easier to study different organisms. It also helps us understand and classify new organisms.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the classification system for all living things?

A

The classification system for all living things is
kingdom-
Phylum-
class-
Order-
Family-
Genus-
species.

17
Q

Why does every species have a scientific name? What is this system called?

A

The scientific naming system is called binomial nomenclature, and we have scientific naming because it is an universal naming system and it makes it easier to communicate worldwide.

18
Q

What are the two classification tools used in classifying organisms? How are they used?

A

Dichotomous keys and cladograms are used to classify organisms. Pg. 22-23 for examples
dichotomous keys- descriptions that lead scientists to identification of unknown organism
cladogram- branched diagram that shows the relationships between organisms, including common ancestors

19
Q

How did microscopes change our ideas about living things?

A

Microscopes changed our ideas about living things because we can observe things more accurately and from a closer view. We can understand microscopic organisms and small things better because we can actually see and study them.

20
Q

What are the two types of microscopes?
How are they different?

A

The two types of microscopes are light microscopes and electron microscopes. They are different because light microscopes use lenses and light to enlarge an image, and electron microscopes use a magnetic field and produce 3d images.

21
Q

How are microscopes used?

A

Microscopes are used to enlarge images and see things closer. Today, we use microscopes in healthcare and crime labs, and jewelers and paleontologists use them as well.