Midterm Flashcards Preview

Science > Midterm > Flashcards

Flashcards in Midterm Deck (50)
Loading flashcards...
1

How do you know if you have a good hypothesis?

If the hypothesis is based on observations

2

What are the benefits and limitations of a physical model?

Benefit: Looks like the thing it models

Limitation: Can not function like a living thing

3

What are the benefits and limitations of a conceptual model?

Benefit: used to compare unfamiliar things with familiar things

Limitation: More abstract; can not be straightforward,./

4

What are the benefits and limitations of a mathematical model?

Benefit: Can easily be used and is simple

Limitation: Have to be careful when creating a complex model

5

Who discovered cells, and what was he looking at?

Robert Hook, looking at cork from trees.

6

Who was the first person to see single celled organisms, also known as _____?

Anton van Leeuwenhoek; protus

7

Name the 6 steps of the cell cycle

Interphase
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis

8

Vegetative propagation = _____ reproduction

Asexual

9

_____(Female part of flower) _____, _____ and _____
_____(Male part of flower) _____, _____

Pistil: Stigma, Style, ovary
Stamen: Anther, filament

10

Define diffusion

The movement of particles from areas of high concentration to areas of lower concentration

11

What is the function of the cuticle on a plant?

To prevent water loss

12

What are the 3 parts of the cell theory?

1) The cell is the basic unit of all things
2) Every organism is made of one or more cells
3) All cells come from existing cells

13

Xylem :
Carries _____ flows _____ comes from the _____
Phloem:

Xylem: Water + minerals, Up, Roots

Phloem: Glucose, Down, Leaves

14

What is the difference between passive and active transport? What is it?

Active: Requires ATP
Passive: does not Require ATP
Osmosis

15

What are the 3 organelles only found in plant cells?

vacuole
chloroplast
cell wall

16

How do large particles get in and out of cells?

Exocitosis
Endocytosis

17

What are the 4 types of breathing?

1) Lungs
2) Gills
3) Spiracle
4) Skin

18

What is the function of the lymphatic system? To return _____ _____ to _____ _____ and destroys things that could ____ you

Leaked fluids to blood vessels; harm

19

what are nucleotides made of?

a sugar, phosphate, and a base

20

Who discovered that the amount of G = the amount of C and the amount of T = the amount of A?

Chargaff

21

What is the function of the nervous system? ____ and transmits info aboutwhat is going on ____ and ____ of your body

receives
inside and outside

22

What are the 3 models?

Mathematical, Conceptual, Physical

23

What are the main components of a controlled experiment?
2 or more _____ groups
1 _____ group
The factor that changes is the _____

Experimental
control
variable

24

The ovule becomes a _____ once fertilized

seed

25

an ovary becomes a _____ once fertilized

Fruit

26

Name the reactants of cellular respiration

oxygen and glucose

27

Do bacterium have a nucleus?

No, they are prokaryotic

28

What type of reproduction is artificial insinimation

sexual

29

What type of reproduction is hermaphrodism

sexual

30

What type of reproduction is budding

Asexual