ASU BIO 181 EXAM 1 LATEST ACTUAL EXAM 200 QUESTIONS AND CORERCT DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+

ASU BIO 181 EXAM 1 LATEST 2023-2024 ACTUAL EXAM 200

QUESTIONS AND CORERCT DETAILED ANSWERS

(VERIFIED ANSWERS) |ALREADY GRADED A+

What limits the paramecium from acquiring more complex functions? -

ANSWER- The number of bimolecular machines it can fit within its

"space". The existing bio-machines must repurpose themselves

completely to complete a task, which means it can't fully 'automate'

itself.

What organ is the contractile vacuole assumed precursor to? -

ANSWER- Kidney - both systems expel excess; CV with extra water

and the kidney expelling waste via urine (water + ick)

T/F

The paramecium swims by way of using a flagella - ANSWER- FALSE

- The paramecium moves using cilia

A cell that is itself an organism must have a minimum of four needs

presented in lecture. List these four things. - ANSWER- 1.

REPRODUCTION

2. FINDING A MATE

3. FOOD

4. SHELTER

A cancer cell is: - ANSWER- Anchorage INDEPENDENT and

IMMORTAL

A normal cell is: - ANSWER- Anchorage DEPENDENT and MORTAL

The loss of the ____ _____ was the first step for development in the

Endomembrane theory - ANSWER- Cell Wall

What limitations exist with cell culture techniques? - ANSWER- 1. Not

all cells grow in a culture

2. The "shape" (histotype and structure) changes

3. The metabolism can change

As a cell 'walks', list the order of events: - ANSWER- 1. flattens

2. filipodia

3. lamellipodia

4. cell muscle ( actin and myosin)

5. cell "superglue"

6. retraction fiber

Do cancer cells experience contact inhibition? - ANSWER- NO. They

will continue multiplying under any circumstance.

T/F

The cytoskeleton gave rise to the nuclear envelope. - ANSWERFALSE.

What is the outer boundary of life in a prokaryotic cell? - ANSWERPlasma Membrane

Explain oxygen conditions in ancient earth. - ANSWER- There was not

a lot of it around, and it was toxic to most living things at the time.

T/F

DNA in extant prokaryotic cells is circular. - ANSWER- TRUE

How was it thought that cells filtered ancient oxygen? Why? -

ANSWER- Oxygen was toxic; so it is thought that peroxisomes evolved

in proto-eukaryotes to filter it.

Association with ribosomes and *what* would support the

endomembrane theory? - ANSWER- Membrane invaginations - the

concept of ribosomes latching on to these invaginations is what the

endomembrane theory poses gave creation to the RER.

Why was motility important to proto cells? - ANSWER- It allowed them

to flee predators and move towards food.