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Flashcards in Mid Term Exam Deck (76):
1

What is the keeping of a constant internal environment despite changes in the external environment?

Homeostasis

2

What is all biochemical reactions of an organism?

Metabolism

3

What is a group of similar looking organisms that can interbreed and produce fertile offspring?

Species

4

What is a testable explanation of a situation?

Hypothesis

5

What is the production of two identical cells from one cell?

Asexual reproduction

6

What is the joining of two non-identical cells to form one cell?

Sexual reproduction

7

What is the measure that is taken based on the independent variable?

Dependent variable

8

What is the standard in which all conditions are kept the same?

Control

9

What is the condition in an experiment that is changed?

independent variable

10

What is an organism that can NOT make their own food, and rely on other organisms?

Heteroprophs

11

What is the scientific study of interactions between organisms and their environment?

Ecology

12

What are nonliving things that inhabit the environment - sunlight, air currents, temperature?

Abiotic factors

13

What is the study of life?

Biology

14

What is an organism that uses energy from the sun to create their own food?

Autrotrophs

15

What is the reaction to a stimulus?

Response

16

What is a relationship between 2 organisms, where one benefits and the other is unaffected?

Commensalism

17

What is a substance that forms hydrogen ions in the water?

Acid

18

What is a substance that forms hydroxide ions in water?

base

19

What is a biologist catalyst, made of protein - that speeds up a reaction?

Enzyme

20

What is a substance that is composed of atoms of different elements chemically bonded?

Compound

21

What is the diffusion of water?

Osmosis

22

What is the production of food for plants, using energy from the sun and CO(2)?

Photosynthesis

23

What is a mixture in which one or more substances are distributed evenly in another substance?

Solution

24

What is the bond formed when two atoms share electrons?

Covalent bond

25

What is the process by which food molecules are broken down to release energy?

respiration

26

What is the combination of substances in which individual substances retain their own properties?

Mixture

27

What is the movement of particles from an area of high concentration to low concentration?

Diffusion

28

What is the bond formed when electrons are donated from one ion to the next to hold the ions together?

Ionic bond

29

What converts light energy into chemical energy and contains green pigment?

Chloroplasts

30

What are flattened sacs that receive newly made proteins and distribute them to other parts of the cell?

Golgi bodies

31

What is the site of protein synthesis that is located on rough ER and in cytoplasm?

Ribosomes

32

What food molecules are broken down to release energy here, powerhouse of the cell?

Mitochondria

33

What is the control center of the cell contains the DNA?

Nucleus

34

What is made up of a double layer of phosphates and fats, another name for cell membrane?

Phospholipid bilayer

35

What is a large molecule that is formed when many smaller molecules bond together to form chains?

Polymer

36

What are cell projections that assist with movement?

Flagella - cilia

37

What are cell division of all the cells of the body except for sex cells?

Parasitism

38

What is the cell division that takes place in sex cells?

Meiosis

39

What is the different gene forms?

Allele

40

What are the cells that only have one set of chromosomes is known as?

Haploid

41

What cell is known as 2n?

Diploid

42

What is the sex cells?

Gamete

43

What are the segment on DNA that controls the production of a protein?

Gene

44

What are the 2 pieces of DNA that make up a chromosome?

Sister Chromatid

45

What structures are made of DNA and pass on genetic information?

Chromosome

46

What is the structure that binds sister chromatids together?

Centromere

47

What is the symbiotic relationship between a tick and dog?

Parasitism

48

What structure's function is to pull the chromosomes apart?

Spindle fibers

49

What is any condition in an environment that causes an organism to adjust?

Stimulus

50

What is a set of paired statements that can be used to identify an organism?

Dichotomous Key

51

What is the study of the standards of what is right and wrong?

ethics

52

What is a biologist that counts the number of dogs in a fenced in yard in order to collect data - - he is conducting what type of research?

Quantitative

53

What kingdom included those organisms that are heterotrophic absorbers?

Fungi

54

What kingdom is where all species are multicellular autotrophs?

Plantae

55

What kingdom contains individuals that may have plant-like, animal-like or fungus-like characteristics?

Protista

56

What kingdom obtains food by diverse pathways?

Monera

57

What is the only kingdom that includes prokaryotic organisms?

Monera

58

What kingdom contains organisms that are heterotrophic consumers?

Animalia

59

Be able to list the 12 levels of organization - large to smallest and smallest to largest.

S - L - - - Atoms, molecule, cell, tissue, organ, organ system, organism, Population, community, ecosystem, Biome, biosphere

L - S - - Biosphere, biome, exosystem, community, population, organism, organ system, organ, tissue, cell, molecule, atom

60

What is the following an example of:

grass - - grasshopper - - rat - - snake

food chain

61

Which of the following organisms would be a carnivore in an ecosystem?

mouse - - black bear - - tree - - snake

Snake

62

What is the approximate percentage of energy that is lost at each trophic level?

90%

63

What is the net gain in ATP following completion of aerobic cellular respiration of one molecule of glucose in a brain cell?

36

64

What will happen to the plant cell when it is placed in a hypertonic solution?

It will shrivel

65

When some materials are admitted through a cell membrane but other are not - - what is the membrane called?

semi-permeable

66

Which of the following explains why cell size is limited?

diffusion of materials take twice as long
too much waste produced
twice as much DNA content is need

67

What is the final result of meiosis?

The production of 4 haploid gametes

68

When do cells grow and divide at an ABNORMALLY high rate?

Cancer

69

KNOW THE STAGES OF MITOTIC CELL DIVISION - BY LOOKING AT A PICTURE - - KNOW THE ORDER

See Mrs. Krumpelman for help

70

During which phase of mitosis do the chromosomes line up in the middle?

metaphase

71

What is the longest phase of the cell cycle?

interphase

72

When does contact inhibition occur?

Wen cell touch each other and stop dividing

73

What occurs when an area of a chromatid is exchanged with the matching area on a chromatid of it homologous chromosome?

crossing over

74

What is a heterotrophic eukaryote associated with the decomposition of dead organisms?

Fungus

75

What are algae, grass, trees know as?

producers

76

What has occurred by the end of prophase?

Disappearing of the nucleolus
Tighter coiling of the Chromosomes
Breaking down of the nuclear envelope