Science Trimester 1 Exam

Front 1

what is the scientific method in order

Back 1

question,research,hypothesis,test hypothesis,conclusion,data table,share data

Front 2

What organelles are present in a plant cell and not in an animal cell(vice versa)?

Back 2

Plant cell : cell wall, chloroplast Animal cell: lysosomes

Front 3

Give the function of the various cell organelles nucleus, Golgi, mitochondria, E.R.(both kinds) ribosomes

Back 3

Golgi- packages and holds waste
Mitochondria- the power house
Nucleus- the brain of the cell
Ribosomes- protien

Front 4

What is the difference between a hypothesis and a prediction?

Back 4

Hypothesis : educated guess about anything
Prediction : total guess

Front 5

Why is it important to read the procedure?

Back 5

It could make you mess up and you’d have to redo the entire thing.
it could hurt you and your partner (ex.explosion).

Front 6

what is the nucleus

Back 6

Commanding cell

Front 7

what is the power house

Back 7

mitochondrian

Front 8

what is the cell membrane

Back 8

security guard (controls what goes in and out)

Front 9

Why does a cell need a cell wall?

Back 9

So the Vacuole stays in place.
Gives the vacuole H2O

Front 10

prefix for multi

Back 10

more than one
many

Front 11

what is the lysosome

Back 11

Break down food particles and worn out cell parts

Front 12

what is the vacuole

Back 12

stores water and wastes

Front 13

what is the ribosome

Back 13

produce protien

Front 14

the is the R.E.R

Back 14

transports the protein

Front 15

what is the S.E.R

Back 15

makes hormones

Front 16

What is the cell theory?

Back 16

All things are made of 1 or more cells. Cells are the basic units of structure and function in living things. All cells are produced from other cells.

Front 17

What did Hooke and Leeuwenhoek observe about cells?

Back 17

Hooke observed dead organisms in cork. he made up the term “cells” because of the rectangular tiny rooms.
Leeuwenhoek observed living, organisms in lake water

Front 18

What is the difference between an element and a compound?

Back 18

An element is a substance that cannot be broken down into a simpler substance, while compounds are two or more elements combined.

Front 19

Why are enzymes important?

Back 19

They speed up chemical reactions in living things, without them, the chemical reactions would that are necessary for life would take too long.

Front 20

What type of biochemical is an enzyme?

Back 20

Protein

Front 21

Sugar molecules can combine to form ______ ?

Back 21

Carbohydrates and Starches

Front 22

What are the differences between diffusion and osmosis?

Back 22

Diffusion is the process by which molecules move from an area of higher concentration to an area with lower concentration.
Osmosis is the diffusion of water molecules across a selectively, permeable membrane.

Front 23

What is the difference between active vs. passive transport?

Back 23

Active Transport: the movement of materials across a cell membrane using cellular energy.
Passive Transport: lets materials go through without energy

Front 24

How does magnification work in a compound light microscope and electron microscope?

Back 24

A compound microscope uses beams of light. An electron microscope use beams of electron instead of light to produce a magnified image.

Front 25

Why are the biochemicals of water, protein, lipids, carbohydrates, and nucleic acids essential to life?

Back 25

Water - without them our cells would dry out and won’t function properly
Protein - repairs tissue
Lipids - makes cell membrane
Carbohydrates - has high energy
Nucleic Acids - 1. Helps Ribosomes make protein . 2. DNA in the nucleus so it helps control other organelles.

Front 26

How would you classify the following into these groups-DNA,enzyme, fat, sugar?

Back 26

DNA is a nucleic acid, Enzymes are proteins, Fats are Lipids, and Sugars are Carbohydrates.

Front 27

Describe the two methods of active transport?

Back 27

1. Endocytosis - cell engulfs food
2. Transport proteins

Front 28

What are the reactants(raw materials) and products of photosynthesis?

Back 28

raw materials : carbon dioxide, water
products: glucose, oxygen

Front 29

What are the reactant(raw materials)s and products of cellular respiration?

Back 29

raw materials : glucose, oxygen
products : carbon dioxide, water

Front 30

Are photosynthesis and cellular respiration opposite processes?

Back 30

yes, they have opposite products and raw materials.

Front 31

How does photosynthesis benefit heterotrophs?

Back 31

Heterotrophs depend on plants (autotrophs) which contain energy from the sun because of photosynthesis, or other animals that eat those autotrophs. They need that energy and oxygen from others that go through photosynthesis.

Front 32

What happens during cellular respiration?

Back 32

cells break down glucose and other molecules from food in the presence of oxygen, releasing energy.

Front 33

What is the difference between lactic acid fermentation and alcohol fermentation?

Back 33

lactic acid f : is in muscles.
alcohol f: is in plants like yeast.

Front 34

Identify the phases(in order) and what major event that happens in each individual phase of mitosis.

Back 34

Interphase : prepares for cell division
Prophase : chromosomes start to appear
Metaphase: chromosomes meet in the middle of the cell.
Anaphase: chromosomes slip apart and head to opposite ends of the cell.
Telophase: the chromatids arrive at opposite poles of the cells, and new membranes form around the daughter nuclei.
Cytokinesis: the division /movement of the cytoplasm

Front 35

What is the stage of the cell cycle during which ________ into two new cells.

Back 35

Mitosis

Front 36

Where does carbon dioxide enter the plant?(part of the leaf)

Back 36

stoma

Front 37

What is copied during replication?

Back 37

DNA

Front 38

What is cytokinesis?

Back 38

The division of the cytoplasm

Front 39

Identify and give the function of a centromere?chromatid? chromosome?

Back 39

Centromere - attaches to chromosomes
Chromatids - chromosomes
Chromosomes - nucleus has DNA, and humans have 23 pairs.