intro to biology test (study guide + crossword)

Objective lens has magnification of 10 and eyepiece has magnification of 60, what is total magnification?

600x

Used to view the objects too small for a light microscope

Electron Microscope

Living things can but don’t always

Reproduce

Sub-atomic particle with no net charge

Neutron

Combination of chemical reactions in an organism

Metabolism

Type of bond when electrons are shared

Covalent Bond

Sub-atomic particle having a negative charge

Electron

The process which organisms keep their internal conditions fairly constant

Homeostasis

A group of atoms in a fixed ratio that are chemically combined

Compound

What all living things require (2)

Energy and Oxygen

Type of bond when electrons are transferred

ionic bond

Basic unit of matter

Atom

Different species of plants and animals and their non-living surroundings

Ecosystem

Contains info for growth and development

DNA

Smallest units that can carry out all the functions of life

Cells

Where the objective lenses are located on a compound microscope

Nosepiece

Part of Earth containing all life

Biosphere

Study of life

Biology

A group of the same species that are living together

Population

Type of compound made entirely of covalent bonds

Molecule

A group of cells working together

Tissue

Allows an organism to respond to its environment

Stimuli

Allows the passage of genes from one generation to another (3)

Asexual reproduction, DNA, Evolution

Protein molecule is used to build muscle

Metabolism

Information about how to make fat cells

DNA

What ALL living things have, need, or possess (6)

Energy, homeostasis, cells, metabolism, DNA, and Evolution

Starch is broken down for energy

Metabolism

Development of embryo cells into different organs

Differentiation

part of a cell

Molecule

The organizational levels from smallest to largest

Molecule, cells, tissue, organs, organ systems, organism, population, community, ecosystem, biosphere

All organisms must be able to ___, produce ___, and respond to their ___

Reproduce, energy, and environment

10 millimeters is a

Centimeter

The change in gene frequencies over time can lead to a change in a species called

Evolution

The basic unit of matter’s subatomic particles, their charges and where they are located

Protons (located in the middle with a positive charge) Nuetrons (located also in middle with a neutral charge) and Electrons (Negative charge located on outside)

How do covalent bonds and ionic bonds differ?

Ionic bonds are when electrons are transferred and covalent bonds are when they are shared

number of sig figs in 4.50×10^4

3

Number of sig figs in 0.015

2