Weekly STAAR Review #2

Label this image:

1= ​ (a)  

2= ​ (b)  

4= ​ (c)  

7= ​ (d)  

• DNA
• mRNA
• tRNA
• rRNA (ribosome)

Chargraff's Rule says that

• A pairs with C

• C pairs with G

• G pairs with T

• T pairs with A

What is true of RNA? (select all that apply)

• Single Strand

• Contains uracil

• Ribose Sugar

• Deoxyribose Sugar

What is the mRNA for the following DNA strand?

TAC GTA

• GCT AGC

• ATG CAT

• AUG CAU

Which of the following would complete this Punnett Square?

• aa

• AA

• Aa

Which of the following genotypes is homozygous dominant?

• A
• Aa
• AA
• aa

Organize these characteristics and examples with the appropriate passive transport.

Groups:

(a) Facilitated Diffusion

,

(b) Simple Diffusion

,

(c) Osmosis

• Small NonPolar Molecules

• Glucose

• Large or Charged Molecules

• Transport Protiens

• Oxygen, Carbon Dioxide, Nitrogen

• Water

What cellular function do carbohydrates and lipids share?

• energy storage

• hormone production

• genetic information

• speed up chemical reactions

What three characteristics do osmosis, simple diffusion, & facilitated diffusion share?

• Homeostasis

• High to Low Concentration

• No energy required

• Energy required

Which species is a common ancestor for species B and D?

• C

• F

• G

• H

• K

Answer explanation

Trace back in time to find the common ancestor. (Shown in blue on the diagram.)