Unit 1 - Test Stuff

Question 1

What happens in metaphase?

Answer 1

Spindle fibres pull the chromosomes into the middle of the cell

Question 2

What happens in anaphase?

Answer 2

Centromeres separate so the daughter chromatids are pulled apart

Question 3

What happens in teleophase?

Answer 3

Nuclear membranes form
Nucleolus reappears
Cytokinesis

Question 4

Why is mitosis important?

Answer 4

To grow, repair, and reproduce

Question 5

What is cancer?

Answer 5

When a mutation forms in the DNA of a cell and they start to duplicate rapidly and out of control.
The infected cells form a tumour

Question 6

What happens in prophase?

Answer 6

• nuclear membrane disappears
• nucleolus disappears
• chromosomes thicken and condense
• spindle fibres form out of the centrioles

Question 7

Name a worms digestive system organs.

Answer 7

Mouth
Esophagus
Crop (stores food)
Gizzard (teeth)
Intensities

Question 8

What types of medical imaging are used in Canada?

Answer 8

X-rays
Fluoroscopy
Ultrasound
Microscopy
Cat scan
MRI

Question 9

How are X-rays produced and what do they show?

Answer 9

Electromagnetic radiation to make images.

Broken bones, cavities, swallowed objects

Question 10

What do fluoroscopys do?

Answer 10

It’s a continuous beam of X-rays

Shows movement of organs

Question 11

What is an ultrasound?

Answer 11

It uses high frequency sound waves to visualize muscles, tendons, and internal organs.
Used in pregnancy

Question 12

What is a cat scan?

Answer 12

Special X-ray equipment that produces a 3D image taken from different angle of the body
Used to see bones, soft tissues, and blood vessels at the same time

Question 13

What is an MRI?

Answer 13

Used powerful magnetic fields to align the hydrogen atoms of water in the body.
Can see different soft tissues including the brain

Question 14

What are some disadvantages of GMOs?

Answer 14

Unnatural