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SHS4202 Cwis Wythnos 1

Authored by Catrin Rowlands

Science

University

Used 27+ times

SHS4202 Cwis Wythnos 1
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10 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Mae’r bilen blasmaidd

The plasma membrane

Wedi ei wneud i fyny yn bennaf o ffosffolipidau a phroteinau wedi eu trefnu mewn strwythur mosaig hylifol

Is composed primarily of phospholipids and proteins arranged in a fluid mosaic structure

Hefo ymddangosiad ‘trilaminar’ o dan electron microsgop

Has a trilaminar appearance under the electron microscope

Mae’r ddau ateb blaenorol yn gywir

Both of the previous are correct

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Pa ddatganiad sy’n disgrifio ffosffolipidau orau?

Which statement best describes phospholipids?

Wedi alinio mewn tri-haen lipidau sy’n ffurfio’r bilen blasmaidd

Are aligned in a lipid trilayer forming the plasma membrane

Yn cynnwys pen polar, hydroffilig sy’n cludo ffosffad a dau gynffon asid brasterog, hydroffobig, amholar

They consist of a polar, hydrophilic, phosphate-bearing head and two non-polar hydrophobic, fatty acid tails

Gweini fel moleciwlau cludo ar gyfer cludiant pilen

Serve as carrier molecules for membrane transport

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Dewiswch pa opsiwn sy’n crynhoi cludiant cludydd-gyfryngol orau

Select which option best summarises carrier-mediated transport

O hyd yn symud sylweddau yn erbyn graddiant crynodiad

Always moves substances against a concentration gradient

Cynnwys protein pilen penodol sy’n gweini fel moleciwl cludo

Involves a specific membrane protein that serves as a carrier molecule

Angen traul egni o’r gell i weithredu

Require energy expenditure from the cell to function

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Pa un o’r canlynol sy’n enghraifft o ddolen adborth positif?

Which of the following is an example of a positive feedback loop?

Ceulad

Coagulation

Cynyddu pH gwaed yn dilyn asidosis

Increasing blood pH following acidosis

Lleihau cynnydd ‘post-prandial’ mewn lefel glwcos y gwaed

Decreasing post-prandial rise in blood glucose level

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Pa un o’r toddion canlynol sydd fwyaf tebygol i dryledu’n oddefol ar draws y bilen blasmaidd (lipid hydawdd)?

Which of the following solutes is most likely to passively diffuse across the plasma membrane (lipid soluble)?

Anion

An anion

Moleciwl polar

A polar molecule

Moleciwl amholar

A non-polar molecule

Catïon

A cation

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Pa ymadrodd sy’n disgrifio gwybodaeth yn cael ei yrru i ffwrdd o’r ganolfan reoleiddio yn ystod homeostasis?

Which phrase describes information being sent away from the control Centre during homeostasis?

Afferol

Afferent

Echddygol

Efferent

Derbynnydd

Receptor

Effeithydd

Effector

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Mae glwcos yn mynd i mewn i’r gell trwy drylediad syml

Glucose enters the cell by simple diffusion?

Gwir

True

Anwir

False

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