Cell Biology And Body Chemistry

Question 1

Organelles

Answer 1

Components that make up cells.

Question 2

Homeostasis

Answer 2

Controlling the internal conditions to create an equilibrium.

Question 3

DNA

Answer 3

Deoxyribonucleic acid tells the cell how to function.

Question 4

RNA

Answer 4

Ribonucleic acid.

Question 5

Phospholipid bilayer

Answer 5

A double layer of phospholipid molecules with embedded protein molecules.

Question 6

Selectively permeable

Answer 6

Allows certain substances in and out.

Question 7

Passive diffusion

Answer 7

Where a substance attaches to a carrier protein to help it cross the membrane.

Question 8

ATP

Answer 8

Adenosine triphosphate.

Question 9

Lysozymes

Answer 9

Digestive enzymes.

Question 10

MRNA

Answer 10

Used in protein synthesis.

Question 11

Chromosomes

Answer 11

Thread like structure of the nucleic acids and protein found in the nucleus, carrying genetic information in the form of genes.

Question 12

Chromatid

Answer 12

Each of the 2 thread like strands into which a chromosome divides during cell division.

Question 13

Centromere

Answer 13

The point on a chromosome by which it’s attached.

Question 14

Diploid number

Answer 14

2 sets of chromosomes.

Question 15

Haploid number

Answer 15

Singe set of unpaired chromosomes.

Question 16

Centrioles

Answer 16

An organelle near the nucleus of a cell which contains the centrioles which form the spindle fibres for cell division.

Question 17

Binary fission

Answer 17

Dividing into 2.

Question 18

Homologous pairs

Answer 18

Matching pairs.

Question 19

Endocytosis

Answer 19

Entering the cell through a membrane.

Question 20

Phagocytosis

Answer 20

White blood cells engulf a pathogen, digest it and produce antigens.