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7th Grade Science > Reproduction, Meiosis, and DNA > Flashcards

Reproduction, Meiosis, and DNA Flashcards

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Biology 101 flashcards
1
Q

The process of forming a new individual. It is one of the characteristics of living things.

A

reproduction

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2
Q

the process of forming a new individual from two parents

A

sexual reproduction

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3
Q

the process of forming a new individual from a single cell or parent

A

asexual reproduction

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4
Q

In ___________________________________, the egg is fertilized by the pollen of the same flower.

A

self-pollination

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5
Q

the egg and sperm cells in animals

A

gametes

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6
Q

Gametes are produced by _____________

A

meiosis

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7
Q

You need two gametes to form a ________________________.

A

zygote

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8
Q

first cell of the new organism in animals

A

zygote

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9
Q

During _________________________,sperm from the pollen of one flower fertilizes the egg of another flower

A

cross-pollination

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10
Q

How many chromosomes do humans have?

A

46

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11
Q

How many chromosomes do human gametes have?

A

23

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12
Q

Can plants produce sexually?

A

yes

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13
Q

What is the purpose of mitosis?

A

to produce body cells

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14
Q

What is the purpose of meiosis?

A

to produce gametes

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15
Q

the process during which chromosome number is halved in order to produce gametes

A

meiosis

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16
Q

the process during which the chromosome number is duplicated to produce body cells

A

mitosis

17
Q

the shape of a DNA molecule

A

spiral staircase/ helix

18
Q

having one set of chromosomes

A

haploid

19
Q

having two sets of chromosomes

A

diploid

20
Q

the first cell of a new organism

A

zygote

21
Q

a reproductive cell, such as an egg or sperm

A

gametes

22
Q

a pair that has the same size and shape and contains the same genes, but different forms of the genes; one came from the male parent and one came from the female parent

A

homologous chromosome

23
Q

DNA wound around proteins: carries genetic information

A

chromosomes

24
Q

the four molecules in DNA that complement each other and are linked by hydrogen bonds

A

(T,A) and (G, C)

25
Q

one parent
asexual or sexual reproduction?

A

asexual

26
Q

results in a zygote
asexual or sexual reproduction?

A

sexual

27
Q

What does DNA stand for?

A

Deoxyribonucleic acid

28
Q

Who won the Nobel prize for determining the structure of the DNA molecule?

A

James Watson, Francis Crick and Maurice Wilkins

29
Q

What are the three main components of nucleotides?

A

sugar, nitrogen base, phosphate group

30
Q

What specific sugar is contained in a molecule of DNA?

A

deoxyribose sugar

31
Q

In the DNA molecule, what are the “sides” made of?

A

sugar and phosphate

32
Q

In the DNA molecule, what are the “rungs” made of?

A

nitrogen bases

7th Grade Science (9 decks)

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