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Flashcards in Bio Deck (55)
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1

What is the main event of S phase?

DNA is replicated in preparation for a cell division

2

What does the Law of Segregation say?

The alleles for a trait will separate during formation of gametes and each gamete will only have one allele

3

Describe achondroplasia

An autosomal dominant disorder that causes dwarfism

4

What does autosomal refer too?

A non sex chromosome

5

Describe the heterozygous of a codominant trait

Will equally express both forms of the allele

6

Define epistasis

Refers to genes that mask the expression of other genes

7

Define pleiotropy

Used to describe a single gene that affects several phenotypes

8

Define polygenic

Means that a trait is a combination of many genes

9

Describe cystic fibrosis and its effects

An autosomal recessive trait characterized by excess mucus production that blocks lung passages

10

Describe brachydactyly

An autosomal dominant disorder that causes shortened fingers and toes

11

Describe albinism and its effects

An autosomal recessive trait that is characterized by the absence of the pigment melanin

12

Describe the heterozygous phenotype for incomplete dominance

Would be a blend between two expressions

13

When is a dihybrid cross used?

When two different traits are being crossed

14

Describe the term autosomal dominant

A person will have a condition as long as they have at least one dominant allele

15

What is the function of the stomata

Allows oxygen that is produced by photosynthesis to escape and that they allow carbon dioxide to be obtained

16

Which of the following is the function of rascular tissues in plants?

To transport chemicals and water throughout the plant

17

Which of the following are produced by the light reactions?

Oxygen, ATP, NADPH

18

What is the purpose of transcription?

Allows for the potions of DNA to be copied and transported from the cell to make proteins that help the cell function

19

What are the fragments making up the noncontinuous strand called?

Okazaki fragments

20

Which of the following make up the three steps of cellular respiration

Glycolysis, the kerbs cycle, electron transport chain

21

What did Rosalind Franklins research demonstrate?

DNA had a double-helical structure and sugar-phosphate backbone was on the outside while the bases were on the inside

22

What are the three molecules that make up a nucleotide

Phosphate, nitrogenous base, pentose sugar

23

What prevents each base from pairing with every other base?

Some bases make three bonds while other bases only capable of making two

24

Which of the following would bind together to form a single strand of DNA

Nucleotides

25

In which of the following dies glycolysis take place?

The cytoplasm

26

Where do the kerbs cycle and the electron transport chain occur?

The mitochondria

27

Photosynthesis occurs in which organelles?

Chloroplasts

28

Which of the following are uses of proteins?

Carrying messages from the nucleus through the cell, regulating what passes through the membrane and strengthening connection tissue in skin, bones, etc.

29

How are fats stored in the body?

As triglycerides

30

When are lipids (fat molecules) broken down into smaller molecules by your body?

During digestion and after you have used all your quick energy