Biology EOC practice #2

Two different populations of birds live in the same area and eat the same types of food. Which most likely describes the relationship between these two populations of birds? 

• competition
• mutualism
• parasitism
• predator-prey

What will most likely happen if the human population continues to grow at current rates?

• There will be fewer natural resources available for future generations.
• There will be an increase in nitrogen levels in the atmosphere. 
• There will be a decrease in water pollution. 
• There will be an increase in the number of strong hurricanes. 

What is the function of autotrophs in the carbon cycle?

• to use oxygen to produce glucose 
• to take in excess water
• to use carbon dioxide to produce glucose
• to feed on herbivores 

Before mitosis begins, which happens before the nucleus starts dividing?

• The cytoplasm separates.
• The DNA replicates. 
• The sister chromatids separate. 
• The homologous chromosomes cross over. 

During strenuous exercise, body temperature increases. The body responds to the increase in temperature by sweating, which helps to reduce the body temperature. Which is demonstrated in this situation?

• excretion
• metabolism
• homeostasis 
• synthesis

Two different populations of birds live in the same area and eat the same types of food. Which most likely describes the relationship between these two populations of birds? 

• competition
• mutualism
• parasitism
• predator-prey

A strand of DNA has these bases:
 AGC CAT GTA TAC What is the complementary DNA strand?

• ACG GAT CTA TAG
• TCG GTA CAT ATG
• TGC CTA GAT ATC
• UCG CUA CAU AUG

During meiosis, homologous chromosomes exchange genetic material. This exchange of genetic material

• increases the genetic variation

• reduces the diploid number to the haploid number

• increases the haploid number to the diploid number

• reduces the probability of mutations

The initial steps in gene expression are modeled. Double-stranded DNA first unwinds into two strands. Which process and product are represented in the diagrams?

• Process: transcription; product: mRNA

• Process: translation; product: protein

• Process: replication; product: tRNA

• Process: recombination; product: polymerase

What process is going on in this photo? 

• Transcription 
• Translation 
• Replication 
• All the above