UNIT 1 Honors Anatomy Study Guide

Why is it important that experiments/results be reproducible?

Because it helps verify results, catch errors, and make research trustworthy.

Understand why it's important to document possible sources of error. 

Documenting possible sources of error helps explain inaccurate results and allows others to improve or repeat the experiment.

Understand how the amount of data (specifically, not enough) can impact your results

Not enough data can make results less accurate, less reliable, and more affected by chance.

Understand what makes a good/valid/reputable table/graph

A good, valid, and reputable table or graph clearly presents accurate data, uses correct labels and units, and makes the results easy to understand.

How does your body get energy (hint: chemical process)? What molecule is the “usable form of energy”?

Your body gets energy through cellular respiration, a chemical process that breaks down food—especially glucose—to release energy. ATP (adenosine triphosphate) is the usable form of energy for cells.

What type of macromolecule is an enzyme? What does it do in the body?

An enzyme is a protein that speeds up chemical reactions in the body without being used up.

Why are macromolecules essential for life? List the 4 types and their basic functions. 

Macromolecules are essential because they build cells, provide energy, store genetic information, and help chemical reactions happen.

• Carbohydrates: Provide quick energy.

• Lipids: Store energy and form cell membranes.

• Proteins: Build and repair structures and speed up reactions.

• Nucleic acids: Store and transmit genetic information.

Be able to identify the macromolecules present in an unknown sample. You do not need to memorize the +/- tests, but you do need to know how to apply the information.

To identify macromolecules in an unknown sample, use the results of different tests to determine which substances are present. Match each test result with its known macromolecule, then compare the unknown sample’s results to identify it.

How do the organelles a cell has relate to its function/structure

Organelles determine a cell’s structure and function by performing specific jobs. They perform tasks like making energy, building proteins, storing DNA, transporting materials, and removing waste.

What are specialized cells? 

Specialized cells are cells designed to perform specific jobs in an organism. For example, nerve cells send signals, while muscle cells help the body move.

What are the levels of organization from smallest to largest?

Cell → Tissue → Organ → Organ system → Organism

Why are levels of organization important?

Levels of organization are important because they show how smaller parts work together to form a functioning organism.

Know the parts of a microscope that are used most often (objectives, focus, etc)

Microscope parts:

• Eyepiece: Lens you look through

• Objectives: Magnify the specimen

• Stage: Holds the slide

• Stage clips: Keep the slide in place

• Diaphragm: Controls light

• Coarse focus: Moves the stage quickly; use it only on low power

• Fine focus: Sharpens the image; use it on all powers, especially high power

• Light source: Illuminates the specimen

How do you load a slide in a microscope?

To load a slide:

1. Start with the lowest-power objective.

2. Place the slide on the stage and secure it with the clips.

3. Center the specimen over the light.

4. Use coarse focus, then fine focus.

5. Switch to higher power and use only fine focus.

When to use coarse vs fine focus. 

Use coarse focus on low power to find the image quickly. Use fine focus to sharpen the image, especially on high power.

What are the general functions of each general tissue type (muscle, connective, nervous, epithelial)?

• Muscle tissue: Produces movement.

• Connective tissue: Supports, connects, and protects body parts.

• Nervous tissue: Sends and processes signals.

• Epithelial tissue: Covers surfaces and protects the body.

What are the 3 different muscle tissues?

• Skeletal muscle: Moves the body; attached to bones.

• Cardiac muscle: Pumps blood; found in the heart.

• Smooth muscle: Moves substances through organs; found in places like the stomach and intestines.

Why does muscle tissue need a large supply of blood, especially compared to the other tissue types?

Muscle tissue needs lots of blood because it requires oxygen and nutrients to produce energy for movement and must remove waste products like carbon dioxide.

Why is connective tissue a seemingly random group of tissues? What do they seem to have in common (hint: functions)

Connective tissue seems random because it includes very different tissues, such as bone, blood, fat, and cartilage. They all support, connect, protect, or hold other tissues together.

Why is blood considered a tissue? (Hint: what is the definition of a tissue?)

Blood is considered a tissue because it is made of similar cells working together to perform a function transporting oxygen, nutrients, hormones, and waste throughout the body.

How are epithelial tissues classified, meaning how are they named?

Epithelial tissues are classified by the number of cell layers and the shape of their cells. Layers can be simple (one layer) or stratified (multiple layers), while cells can be squamous (flat), cuboidal (cube-shaped), or columnar (tall).

What makes up nervous tissue? Is it just the neurons that signal each other?

Nervous tissue is made of neurons and glial cells. Neurons send signals, while glial cells support, protect, and nourish them.

Looking at a data set and/or graph, identify outliers (if any). Explain how they could impact your results. What can be done about it?

An outlier is a data point far from the others. It can skew averages and make results misleading.

Voluntary, strained muscle tissue attached to the bones for body movement

skeletal

Chemical reaction that requires glucose and oxygen to make ATP

Cellrespiration

Microscope knob used exclusively under low power to locate and bring the image into general focus

Coarse

The shape and structure of cells will determines how it will

Function

______, tissues, organs, organ system organism

Cells

Epithelial tissue with 2 or more layers

Stratefied

Muscle tissue needs a large supply of blood because it needs to make a lot of _____

ATP

Critical experimental requirement ensuring independent trials yield consistent results

Reproducible

Levels of organizations allow organisms to have more ____ functions.

Complex

Microscopes knob used under medium and high power to precisely sharpen image details

Fine

Experiments become more valid/reputable, the _____ data given

Reproducible

A group of similar specialized cells working together to perform a shared function

Tissue

Types of tissue that sense and responds to messages through the body

nervous

Biological protein catalyst that lowers activation energy to speed up a chemical reaction

Enzyme

Liquid connective tissue consisting of formed cellular elements suspended in fluid plasma

Blood

Epithelial tissue in a single layer

Simple

Variety of chemicals that allow all living things to function

Macromolecules

Molecules that provide insulation, long term energy, and cell membranes

Lipid

Epithelial tissues are named by # of layers and ___ of cells.

Shape

Diversity tissue class characterized by cells embedded within an extracellular matrix

Connective

Cells with unique structures modified for specific functions

Specialized

Supporting cells in nervous tissue

Neuroglia

Macromolecule essential for quick energy and structural support in plants

Carbohydrate

Involuntary striated muscle tissue found exclusively in the heart

Cardiac

A data point that lies far outside the main set of results and can distort data analysis

Outlier

Macromolecule type consisting of amino acids that preforms structural , catalytic, and transport functions

protein

Involuntary, non-stiated muscle tissue found in Walls of internal organs and vessels

Smooth

Usable form of chemical energy needed for all cells processes

energy

General tissue types that covers body surface, lines hollow cavities, and forms glands

Epithelial