Check Your Understanding

Question 1

A protein could be considered each of the following EXCEPT

Answer 1

An element

Question 2

Molecules of “life” include all of the following:

Answer 2

proteins, lipids, water, nucleic acids, carbohydrates.

Question 3

Which statement best describes metabolism in living things?

Answer 3

the process of taking in energy and using it to live.

Question 4

The statement that best describes homeostasis

Answer 4

Maintenance if a dynamic state if equilibrium within the human body

Question 5

What is an allele?

Answer 5

One of several possible variations of a gene?

Question 6

Which I free following is required for information storage?

Answer 6

Deoxyribonucleic acid (DNA)

Question 7

What are the 4 main features of life?

Answer 7

Metabolism, inheritance, evolution, diversity

Question 8

What is meant by inheritance in biology?

Answer 8

The transfer of biological information from parent to offspring

Question 9

What is meant by the statement “life is diverse?”

Answer 9

There are many different kinds of living organisms on Earth

Question 10

The correct sequence of smallest to largest

Answer 10

Protons, atoms, molecules, cells

Question 11

Why does sodium react so easily with chariot make sodium chloride?

Answer 11

Both atoms have incomplete outer orbitals and they complete other’s when they combine

Question 12

What are proteins made of?

Answer 12

Amino acids

Question 13

What are enzymes and what do they do?

Answer 13

Enzymes are PROTEINS, which lower the energy required for chemical reactions required to maintain living things

Question 14

What is considered the fundamental unit of life

Answer 14

A cell

Question 15

Darwin observed that pecked change through time. How does this happen?

Answer 15

Natural selection “choosing” organisms with the most advantageous traits to survive and reproduce

Question 16

Darwin observed that pecked change through time. How does this happen?

Answer 16

Natural selection “choosing” organisms with the most advantageous traits to survive and reproduce

Question 17

Who was Dr. Semmelweiss?

Answer 17

The doctor who figured out how to prevent childbed fever

Question 18

Why is it important to repeat experiments or test hypothesis in different ways?

Answer 18

To make sure rhetorical predictions hold up in multiple situations

Question 19

Which if the following assumptions of science is illustrated by this statement: “Bacterial infections be made much less of a problem when doctors began routinely practicing good hygiene”

Answer 19

Cause and effect

Question 20

Certain mushrooms tend to appear suddenly in circles in lawns. What might be an appropriate scientific hypothesis about this?

Answer 20

Mis chromos mostly grow underground from a a central root structure

Question 21

An example of a scientific statement

Answer 21

According to DNA comparisons, humans share a common ancestor with chimpanzees

Question 22

In the scientific method, what is empirical evidence?

Answer 22

Information from direct observation or experimental results

Question 23

What does strep throat and childbed fever have in common?

Answer 23

Both are caused by similar bacteria

Question 24

The first step for directly linking a microbe to a specific disease according to Koch’s postulates is to

Answer 24

Obtain a sample of a blood or other body fluid from a diseased animal

Question 25

What accurately describes how the cell theory applied to prokaryotic and eukaryotic cells?

Answer 25

Both prokaryotic and eukaryotic organisms are made of one or more cells

Question 26

What is ribosome

Answer 26

A cellular structure that is composed of both RNA and protein

Question 27

Do prokaryotic cells have nuclear envelope

Answer 27

Nope. But they still contain genetic material

Question 28

In passive transport, the energy driving the movement of materials across a membrane is provided by

Answer 28

The concentration gradient across the membrane

Question 29

What is the unifying theme of biology?

Answer 29

All forms of life on Earth are, ,related in some way!