cell structure (topic 2)

Question 1

what are the parts in a plant cell?

Answer 1

vacuole, nucleus, cell wall, cell membrane, cytoplasm, chloroplasts, ribosomes,mitochondria

Question 2

what are the parts in an animal cell?

Answer 2

cytoplasm, nucleus, cell membrane, ribosome, mitochondria, ribosome

Question 3

what parts are present in both plant and animal cell?

Answer 3

cytoplasm, cell membrane, nucleus, ribosome,mitochnodria

Question 4

what are the structures in a bacteria cell?

Answer 4

cell wall, cell membrane, cytoplasm,
ribosomes, circular DNA, plasmids

Question 5

function of cytoplasm

Answer 5

jelly like substance that is the site of many chemical reactions that take place in the cell

Question 6

function of nucleus

Answer 6

contains chromosomes, controls all the activities of the cell (the cell’s metabolism)

Question 7

function of cell membrane

Answer 7

controls the movement of substances into and out of the cell

partially permeable membrane that allows some molecules to pass through it, while others cannot

Question 8

function of vacuole

Answer 8

help the cell to stay rigid some substances can be stored in them

Question 9

function of chloroplsasts

Answer 9

site of photosynthesis in the cell may contain starch grains that act as food stores

Question 10

function of cell wall

Answer 10

provides shape and support to the cell
prevents the cell from bursting when it absorbs water

Question 11

function of mitochondria

Answer 11

It perform cellular respiration, referred as powerhouse of the cell.

Question 12

function of ribosomes

Answer 12

A ribosome is the cellular machinery responsible for making proteins, protein synthesis

Question 13

function of circular dna

Answer 13

for containing the genetic material

Question 14

function of plasmids

Answer 14

small loops of DNA containing a few genes that can be transferred to other bacteria.

Question 15

how are new cells produced

Answer 15

by division of existing cells (assexually)

Question 16

function of cilliated cells

Answer 16

moving mucus in the trachea and the bronchi of the lungs

ciliated cells also move the ovum and zygote down the fallopian tube

Question 17

function of root hair cells

Answer 17

absorbs water and dissolved mineral ions from the soil

Question 18

function of palisade mesoohyl cells

Answer 18

perform photosynthesis in leaves

Question 19

function of neurones

Answer 19

conducting electrical impulses to different parts of the body

Question 20

function of red blood cells

Answer 20

transport of oxygen around the body in the bloodstream

Question 21

function of sperm and egg cells

Answer 21

sexual reproduction

Question 22

levels of organisation

Answer 22

cell, tissue, organ, organ system, organism

Question 23

what is a tissue + example

Answer 23

a group of cells with similar structures, and which work together to carry out a shared function eg. layer of smooth muscle

Question 24

what is an organ + example

Answer 24

a group of tissues, which work together to carry out specific functions eg arteries

Question 25

what is an organ system + example

Answer 25

a group of organs with related functions, which work together to carry out body functions eg circulatory system

Question 26

formula for magnification

Answer 26

image size/ actual size

Question 27

how do you convert mm to um

Answer 27

/1000