Deck 29: Human Biology

Question 1

During the _____ phase of cell life,each DNA molecule is replicated into two identical daughter DNA molecules.

A) G1
B) G2
C) M
D) S

Answer 1

S

Question 2

The two major parts of the cell are the nucleus and the _____.

A) mitochondria
B) cell wall
C) nucleolus
D) cytoplasm

Answer 2

cytoplasm

Question 3

The cell "engines" are the _____.

A) ribosomes
B) lysosomes
C) mitochondria
D) nucleoli

Answer 3

mitochondria

Question 4

The only principal molecules in the body which are simple molecules are _____ molecules.

A) carbohydrate
B) water
C) lipid
D) protein

Question 5

The metabolic process of building large molecules from smaller ones is called _____.

A) synthesis
B) catabolism
C) anabolism
D) homeostasis

Question 6

Any chromosome damage induced by radiation could be seen during the _____.

A) metaphase
B) telophase
C) anaphase
D) prophase

Question 7

The endocrine glands produce _____.

A) hormones
B) lipids
C) antigens
D) glycerol

Question 8

Ribonucleic acid (RNA)is located primarily in the _____.

A) cytoplasm
B) nucleus
C) cell wall
D) ribosomes

Question 9

The _____ in the cell are nucleic acids.

A) DNA
B) RNA
C) lipids
D) both A and B

Question 10

The _____ have the function of cleaning contaminants from the cell.

A) mitochondria
B) lysosomes
C) ribosomes
D) chromatids

Question 11

DNA is located in the _____ of the cell.

A) nucleus
B) cytoplasm
C) wall
D) both A and B

Question 12

The human body is composed of about 80% _____.

A) carbohydrates
B) protein
C) nucleic acids
D) water

Question 13

The process of cell meiosis results in cells with _____ chromosomes each.

A) 22
B) 23
C) 46
D) 48

Question 14

A codon is a _____.

A) protein molecule
B) cell organelle
C) genetic message
D) somatic cell

Question 15

The most radiosensitive target molecule in the human cell is the _____.

A) protein
B) DNA
C) hormone
D) glucose

Question 16

Meiosis is the process of cell division for _____ cells.

A) muscle
B) skin
C) somatic
D) genetic

Question 17

All the hereditary information about an individual is contained in the _____ cells.

A) germ
B) brain
C) blood
D) skin

Question 18

The _____ is the basic functional unit of all plants and animals.

A) DNA
B) cell
C) macromolecule
D) lipid

Question 19

The _____ in the body provide fuel for cell metabolism.

A) protein
B) water
C) carbohydrates
D) hormones

Question 20

A cell is in _____ when it is not undergoing mitosis or meiosis.

A) prophase
B) anaphase
C) interphase
D) telophase

Question 21

Lymphoid tissue begins to atrophy at what amount of radiation dose?

A) 5 Gy
B) 2 Gy
C) 10 Gy
D) 30 Gy

Question 22

Before cells mature,they are called _____ cells.

A) stem
B) precursor
C) undifferentiated
D) all of the above

Question 23

Most of the tissue in the average human body is composed of _____.

A) blood
B) skin
C) muscle
D) fat

Question 24

The tissue in the _____ is more radiosensitive than _____ tissue.

A) bone marrow, skin
B) brain, cornea
C) muscle, gonadal
D) brain, lymphoid

Question 25

One of the most radiosensitive tissues in the body is _____ tissue.

A) spinal
B) muscle
C) lymphoid
D) thyroid