Rad Bio

Describe the effects on the severity or probability of a response with a linear non-threshold dose response relationship as dose increases (probabalistic reaction).​ As dose increases ________

• severity increases

• severity decreases

• no change in severity, increase in probability

What is the least radiosensitive cell in the human body?​

• muscle

• lymphocytes

• osteoblasts

• nerve

A low D37 number means that a cell is ….....radiosensitive or radioresistant?

• radiosensitive

• radioresistant

Where does the Calvin cycle take place?

• Stroma

• thylakoid

• thylakoid space

• matrix

What is the primary function of the light reactions of photosynthesis?

• To produce glucose

• To produce NADPH and ATP

• To use ATP

• To produce RuBP

Tags

NGSS.HS-LS1-5

What supplies the electrons that are lost in PS I?

• the electrons from PS II

• water

• glucose

• oxygen

Tags

NGSS.HS-LS1-5

Where does the carbon come from that is used to form glucose?

• The soil

• CO₂ in the air

• From other carbohydrates

• Calvin Cycle

Tags

NGSS.HS-LS2-5

If the proton (H+) pump in the thylakoid was not working which molecule could not be made during the light reaction?

• NADPH

• ATP

• Water

• Oxygen gas

What is the primary effect of ionizing radiation on biological tissues?

• A) It causes chemical reactions that damage DNA

• B) It heats the tissues causing burns

• C) It causes immediate cell death

• D) It enhances cell growth

Tags

NGSS.HS-PS4-3

Which of the following is considered the most radiosensitive phase of the cell cycle?

• A) G1 phase

• B) S phase

• C) G2 phase

• D) M phase

Tags

NGSS.HS-LS1-4