6th grade cells, genetics and evolution

Question 1

Five students measured their heights in cm: 145, 157, 169, 176, 161. What is the range of their heights, in cm?

Answer cm

Question 2

Plant and animal cells: which statement is NOT true?

• A. A cell wall is made of cellulose in plants.
• B. Animal cells have a cell membrane but no cell wall.
• C. Plant cells have a cell wall instead of a cell membrane.
• D. Not every plant cell has chloroplasts.

Question 3

Where is this found: cell wall?

• A. plant cells only
• B. both plant and animal cells

Question 4

Evolution: which statement is NOT true?

• A. Birds are descended from dinosaurs.
• B. Individual animals evolve during their own lifetime.
• C. Fossils are evidence for evolution.
• D. Species can become extinct.

Question 5

Muscle cells in a sprinter's legs contain huge numbers of one structure. Which?

• A. vacuoles
• B. mitochondria
• C. cell walls
• D. chloroplasts

Question 6

Height data for a large group of adults usually form which shape when plotted?

• A. a bell-shaped curve (normal distribution)
• B. two separate bars
• C. a straight rising line
• D. a flat line

Question 7

Is this continuous or discontinuous variation: body mass?

• A. continuous
• B. discontinuous

Question 8

Cells: which statement is NOT true?

• A. Both plant and animal cells have a nucleus, cytoplasm and a cell membrane.
• B. Animal cells have a cell wall.
• C. Plant cells have a cell wall but animal cells do not.
• D. Most plant cells have a large permanent vacuole.

Question 9

Evolution: which statement is true?

• A. Variation between individuals is needed for natural selection.
• B. Humans evolved from modern chimpanzees.
• C. Dinosaurs and early humans lived at the same time.
• D. Individual animals evolve during their own lifetime.

Question 10

Which part of a cell strengthens and supports a plant cell?

• A. cell membrane
• B. cell wall
• C. chloroplasts
• D. mitochondria

Question 11

Why do animal cells not need a cell wall?

• A. Walls would stop all substances entering
• B. Animal cells have chloroplasts instead
• C. Animals are supported by skeletons and their cells need to be flexible
• D. Animal cells are too small for walls

Question 12

Which part of a cell matches this description: contain chlorophyll to absorb light?

• A. mitochondria
• B. cell wall
• C. permanent vacuole
• D. chloroplasts

Question 13

What do fossils tell us about living things?

• A. Living things have changed over very long periods of time.
• B. Fossils are only made of plastic.
• C. Dinosaurs lived at the same time as the first humans.
• D. Living things have never changed.

Question 14

This is a plant cell. Which part has the ring around it?

• A. vacuole
• B. mitochondria
• C. cell membrane
• D. nucleus

Question 15

What does the permanent vacuole do?

• A. there are many of them in muscle cells
• B. contain chlorophyll to absorb light
• C. where aerobic respiration releases energy from glucose
• D. filled with cell sap to keep the cell firm

Question 16

Is this organism unicellular or multicellular: a bacterium?

• A. unicellular (one cell)
• B. multicellular (many cells)