Biology EOC Review 2019 #2

The backbone of a DNA molecule is made from a ______________ and a _______________ group.

• lipid, carbon
• sugar, phosphate
• nitrogen, oxygen
• nitrogen, sulfur

What are the four nitrogen bases?

• adenine, thymine, guanine, cytosine
• adenine, lysine, prolene, guanine
• arganine, cytosine, lysine, purine
• lysine, cytosine, lucine, guanine

The building block of nucleic acids are nucleotides.  Nucleotides are composed of a sugar, a phosphate group, and a _________________ base.

• oxygen
• hydrogen
• nitrogen
• carbon

The shape of the DNA molecule is a double __________________?

• "S"
• helix
• rope
• curve

DNA makes a copy of itself in a process called ________________________________?

• translation
• replication
• translation
• division

Cattle egrets forage (feed) in fields among cattle. The egret gets easy access to flying insects stirred up by the cattle, and the cattle don't care if they are there or not.

• mutualism
• commensalism
• competition
• parasitism

Tags

NGSS.HS-LS2-6

A tapeworm and a cat have this type of relationship.

• mutualism
• parasitism
• commensalism
• competition

What type of symbiosis?  Hummingbirds feed on nectar from flowers.  The flowers are pollinated by hummingbirds as they move from flower to flower.

• commensalism
• mutualism
• parasitism
• predation

Tags

NGSS.MS-LS2-2

Which of the following is the correct equation for PHOTOSYNTHESIS?

• CO₂ + light + H₂O --> O₂ + Sugar
• CO₂ + sugar + H₂O --> O₂ + light
• _O2 + light + H₂O --> CO₂ + Sugar
• CO₂ + O₂ + H₂O --> Light+ Sugar

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

(SC.912.N.1.1) An osmosis investigation was conducted using 20 chicken eggs to represent cells with semipermeable membranes. The eggs were first soaked in vinegar to dissolve the shell. The eggs were then transferred to corn syrup for 24 hours and then to distilled water for 24 hours. The mass of each egg was measured before and after each soaking to determine how much water diffused into or out of the eggs. The table below shows the average mass of the eggs at each step of the investigation.
Based on this experiment, which of the following should be inferred about cells with semipermeable membranes? 

• Substances other than water may also cross the cell membrane. 
• Substances other than water may block pores in the cell membrane. 
• Water enters the cell when placed in environments of high water concentration. 
• Water leaves the cell when placed in environments with a low concentration of solutes. 

Tags

NGSS.HS-LS2-4