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Flashcards in April Test Deck (53)
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1

What happens inside the cytoplasm?

Chemical reactions

2

What are the mitochondria for?

Releasing energy

3

What is the nucleus for?

-Controlling the cell

-Contains the instructions to make a new cell

4

What is the cell membrane for?

Controlling what enters and exits the cell

5

Why is a sperm cell specialised?

-Long tail
-Many mitochondria to release energy for movement

6

Why are nerve cells (neurones) specialised?

-they're long and thin and form connections with other cells

7

What do ribosomes do?

Make proteins

8

What do chloroplasts do?

Convert light energy into glucose

9

What is glucose?

Sugars

10

What does the vacuole do?

Stores food + nutrients

11

What is interphase?

The cell prepares to divide by copying DNA and making cell parts

12

What is mitosis?

Where chromosomes separate and the cell divides into two

13

What's the best way to remember the mitosis cycle?

Please Make Another Two Cells

Prophase
Metaphase
Anaphase
Telophase
Cytokinesis

14

What happens in prophase?

DNA condenses

15

What happens in metaphase?

Chromosomes line up in the middle and spindle fibres start filling the cell

16

What happens in anaphase?

Chromosomes are pulled apart by spindle fibres

17

What happens in telophase?

Two nuclei form

18

What happens in cytokinesis?

Cytoplasm divides in two

19

What are gametes?

Sex cells

20

What's the magnification formula?

Image ➗ Actual

(AIM)

21

Is a body cell a haploid or diploid?

Diploid

22

Is a sex cell a haploid or diploid?

Haploid

23

Traits of asexual reproduction?

One parent, little offspring, offspring clones of parent

24

Traits of sexual reproduction?

Two parents
Sex cells
Variation in offspring

25

What are the 4 bases in DNA?

Adenine
Cytosine
Guanine
Thymine

26

What are the uprights of the DNA ladder made of?

Sugar and phosphate

27

What are the bases connected by in DNA?

Hydrogen bonds

28

What is the twisted DNA structure called?

Double helix

29

How are mutations formed?

When DNA is copied wrong

30

In DNA extraction why is the onion placed in washing up solution?

To break down cell membranes and release DNA