sci_mod9

Question 1

The smallest stable unit of matter in Creation

Answer 1

Atom

Question 2

Two or more atoms linked together to make a substance with unique properties

Answer 2

Molecule

Question 3

The process by which a plant uses the energy of sunlight and certain chemicals to produce its own food

Answer 3

Photosynthesis

Question 4

The process by which a living organism takes energy from its surroundings and uses it to sustain itself, develop, and grow

Answer 4

Metabolism

Question 5

Special structures or chemicals that allow living organisms to sense the conditions of their surroundings

Answer 5

Receptors

Question 6

The smallest unit of life in Creation

Answer 6

Cell

Question 7

What are the four criteria for life?

Answer 7

• All life forms contain DNA.
• All life forms have a method by which they take energy from the surroundings and convert it into energy that helps them live.
• All life forms can sense changes in their surroundings and respond to those changes.
• All life forms reproduce.

Question 8

What does DNA provide to a living organism?

Answer 8

DNA provides the information necessary to turn lifeless chemicals into a living organism.

Question 9

Compared to other molecules, is DNA big or small?

Answer 9

It is big. In fact, DNA is one of the biggest molecules in Creation.

Question 10

Does DNA store its information more efficiently or less efficiently than a computer?

Answer 10

DNA is significantly more efficient at information storage than the best computer human science can make.

Question 11

DNA is made up of two basic parts: the backbone and the nucleotides. Which part stores the information?

Answer 11

The nucleotides store the information. Remember, the information of a living organism is stored as a sequence of nucleotides.

Question 12

DNA is made up of two basic parts: the backbone and the nucleotides. Which part forms the double helix structure?

Answer 12

The backbone forms long ribbons that twist to make the double helix structure.

Question 13

Which nucleotide will link to adenine? Which will link to cytosine?

Answer 13

Thymine links to adenine, and guanine links to cytosine.

Question 14

One half of a portion of DNA has the following sequence: cytosine, guanine, adenine, guanine, thymine, thymine
What is the sequence of nucleotides on the other half of this portion?

Answer 14

The relationship in 7 allows you to determine the other half of the DNA, because only adenine and thymine can link up. Similarly, only cytosine and guanine can link up.
guanine, cytosine, thymine, cytosine, adenine, adenine

Question 15

One half of a portion of DNA has the following sequence: thymine, guanine, cytosine, adenine, thymine, guanine
What is the sequence of nucleotides on the other half of this portion?

Answer 15

The relationship in 7 allows you to determine the other half of the DNA, because only adenine and thymine can link up. Similarly, only cytosine and guanine can link up.
adenine, cytosine, guanine, thymine, adenine, cytosine

Question 16

What is the name of the chemical that plants make for food?

Answer 16

Plants use photosynthesis to make their own food, glucose.

Question 17

What is the name of the chemical that plants store their food as?

Answer 17

Plants store food as starch.

Question 18

What is a biosphere?

Answer 18

A biosphere is a living system that is isolated from its surroundings but still continues to live and grow.

Question 19

Metabolism requires food and something else. What is that something else?

Answer 19

Metabolism requires food and oxygen.

Question 20

Metabolism produces energy and usually two other things. What are they?

Answer 20

Metabolism usually produces energy, carbon dioxide, and water.

Question 21

An organism’s receptors no longer work. Which of the 4 criteria of life will the organism not be able to perform?

Answer 21

The organism will not be able to sense and respond to change.

Question 22

Consider the difference between a shark and an anchovy. Both are fish. The first is a fierce hunter that rarely is eaten by any other animal. The second is a major source of food for many other fish in the sea. Which would you expect to have more babies: two shark parents or two anchovy parents?

Answer 22

The anchovy parents will have many more babies, because so many anchovies get eaten that many must be born to “replace” them.

Question 23

Every once in a while, a female cat will be born sterile. This means that the cat cannot have kittens. Does this mean that the cat is not alive, since it cannot reproduce?

Answer 23

The cat is still alive, because its cells can reproduce.

Question 24

Is the population of people on this earth becoming a problem?

Answer 24

No, it is not. The speed at which the human population is increasing has been slowing every year. Also, there is more food per person today than ever before. Finally, the cost of raw materials is lower than ever. Thus, there are no indicators which point to trouble.

Question 25

Where is the DNA stored?

Answer 25

DNA is stored in the nucleus.

Question 26

How many basic kinds of cells are there?

Answer 26

There are three basic kinds of cells: plant cells, animal cells, and cells from bacteria.

Question 27

If a scientist uses a microscope to examine a cell from a mouse, a cell from a leaf, and a cell from a
cat, how many different basic kinds of cells will she see?

Answer 27

The scientist will see two basic kinds of cells. The leaf cell will be a plant cell, and the mouse cell and cat cells will both be animal cells.