Cells, Biomolecule, Enzymes & Cell Transport

Question 1

The primary function of the cell membrane is

Accepted Answer

to control what moves in and out of the cell.

Question 2

A partially permeable barrier between the cell contents and the outside of the cell.

Accepted Answer

cell membrane

Question 3

Ethanol is used to test for the presence of fats and oils.

Accepted Answer

True

Question 4

Benedict's solution is used to test for monossacharides or simple sugars.

Accepted Answer

True

Question 5

Which specialized cells in humanare found only in females?

Accepted Answer

Egg cells

Question 6

What is concentration?

Accepted Answer

amount of things in a given area

Question 7

Which of the following is NOT a factor affecting the movement of particles in and out of the cell?

Accepted Answer

Size of the cell

Question 8

Which specialized cells in the plants transport water and minerals from the roots to the leaves?

Accepted Answer

Xylem

Question 9

Which statement is false?

Accepted Answer

Fatty acids are a type of amino acid.

Question 10

The specialized cells in the plants that capture the light energy in the leaves to make food.

Accepted Answer

Palisade cells

Question 11

Three main elements from the the Period Table that are present in most molecules in living organism

Accepted Answer

hydrogen, carbon, oxygen

Question 12

Which of the following is an example of simple diffusion?

Accepted Answer

Movement of oxygen into the leaf of a plant.

Question 13

Group of compounds that ensures metabolic reactions take place in living organisms at a speed necessary to sustain life

Accepted Answer

Enzymes

Question 14

Movement of water through a semi-permeable membrane from a more dilute to a more concentrated solution is -

Accepted Answer

Osmosis

Question 15

The figure below is an example of synthesis.

Accepted Answer

True

Question 16

What kind of solution is the red blood cell on the left in?

Accepted Answer

hypotonic

Question 17

Passive transport

Accepted Answer

doesn't require energy.

Question 18

Ethanol turns cloudy in the presence of fats and oils.

Accepted Answer

True

Question 19

What kind of transport doesn't require the use of energy to move materials across the membrane?

Accepted Answer

all of these don't require the cell to use energy

Question 20

Biuret solution is used to test proteins.

Accepted Answer

True

Question 21

Active transport

Accepted Answer

all of the answers are correct

Question 22

What is a feature of all catalysts?

Accepted Answer

They are made from protein

Question 23

This is an example of active transport.

Accepted Answer

True

Question 24

A diagram of a cell has a width of 62 000 µm, but has a width of 80 µm in real life. Calculate the magnification.

Accepted Answer

x 775

Question 25

The drawing shows a food test being carried out in a laboratory. Which food test & which food group is being tested for?

Accepted Answer

Benedict's test for reducing sugars

Question 26

What food molecules does solution F contain?

Accepted Answer

Starch only

Question 27

Which specialized cells in human are found only in males?

Accepted Answer

Sperm cells

Question 28

Which specialized cell transports oxygen to the different parts of the body?

Accepted Answer

Red blood cell

Question 29

__________ is the diffusion of water through a semipermeable membrane.

Accepted Answer

osmosis

Question 30

The positive result of Biuret test is change in color of the solution from blue to purple.

Accepted Answer

True

Question 31

Magnification of the eyepiece lens was ×10 and magnification of the objective lens was ×20. What is the magnification?

Accepted Answer

x 200

Question 32

A strand of DNA: T―G―A―A―C―T―A―G―C―C. What would the correct order of bases be on the complementary strand of DNA?

Accepted Answer

A ― C ― T ― T― G― A ― T ― C ― G― G

Question 33

The image is 43 mm wide and has been magnified 2500 times. What is the actual width of the cell?

Accepted Answer

17.2 µm

Question 34

Vitamin C test is by the use of DCPIP solution.

Accepted Answer

True

Question 35

DCPIP solution turns the solution to colorless in the presence vitamin C.

Accepted Answer

True

Question 36

Which agar block will have the greatest surface area to volume ratio?

Accepted Answer

0.5 cm x 0.5 cm x 0.5 cm

Question 37

Iodine test turns starch from black to brown.

Accepted Answer

False

Question 38

The molecule X will attach to the active site (Y) of an enzyme.

Accepted Answer

True

Question 39

The difference in concentration of a substance from one point to another.

Accepted Answer

Concentration gradient

Question 40

Which is the correct base pair?

Accepted Answer

C with G

Question 41

Movement of particles from an area of high concentration to an area of lower concentration is:

Accepted Answer

diffusion

Cells, Biomolecule, Enzymes & Cell Transport

Questions 41

Cells, Biomolecule, Enzymes & Cell Transport

Questions 41