LRHS STAAR Category 1&2 Checkpoint
star
star
star
star
star
Last updated 8 months ago
13 questions
1
Which statement best describes how a virus replicates?
Which statement best describes how a virus replicates?
1
When a stem cell divides, it produces two daughter cells. One daughter cell will remain a stem cell, while the other daughter cell will differentiate into a specialized cell.
Which factor will most directly determine what type of specialized cell will be produced?
When a stem cell divides, it produces two daughter cells. One daughter cell will remain a stem cell, while the other daughter cell will differentiate into a specialized cell.
Which factor will most directly determine what type of specialized cell will be produced?
1
A model of transcription and a codon chart are shown.
Which amino acid would be coded first from the DNA strand being transcribed?
A model of transcription and a codon chart are shown.
Which amino acid would be coded first from the DNA strand being transcribed?
1
A prokaryotic cell and a eukaryotic cell are shown.
Which characteristic best distinguishes these cells as either prokaryotic or eukaryotic?
A prokaryotic cell and a eukaryotic cell are shown.
Which characteristic best distinguishes these cells as either prokaryotic or eukaryotic?
1
Which statements best compare a function of proteins and lipids in a human cell?
Which statements best compare a function of proteins and lipids in a human cell?
1
A model of two structures that perform cellular processes is shown.
What are the products of the cellular processes in these organelles?
A model of two structures that perform cellular processes is shown.
What are the products of the cellular processes in these organelles?
1
E. coli has three genes that each code for different enzymes that break down lactose. Scientists conducted investigations about the production of these enzymes using samples of E. coli. Their results are shown in the table.
Which conclusion about the production of the enzymes can be determined by analyzing the scientists’ results?
E. coli has three genes that each code for different enzymes that break down lactose. Scientists conducted investigations about the production of these enzymes using samples of E. coli. Their results are shown in the table.
Which conclusion about the production of the enzymes can be determined by analyzing the scientists’ results?
1
A mutation in which types of cells would only affect the organism and not future generations?
A mutation in which types of cells would only affect the organism and not future generations?
1
Students are given data from an investigation that identified some of the chemical elements present in four different samples.
Which sample was most likely DNA?
Students are given data from an investigation that identified some of the chemical elements present in four different samples.
Which sample was most likely DNA?
1
Students are modeling mRNA during the process of protein synthesis. Which answer choice correctly describes the model of the mRNA strand being transcribed?
Students are modeling mRNA during the process of protein synthesis. Which answer choice correctly describes the model of the mRNA strand being transcribed?
1
Enzymes are proteins that have a three-dimensional shape that is specific to a particular substrate. Environmental conditions can change the shape of the protein.
What is the most likely result if the shape of the enzyme changes?
Enzymes are proteins that have a three-dimensional shape that is specific to a particular substrate. Environmental conditions can change the shape of the protein.
What is the most likely result if the shape of the enzyme changes?
1
A certain mutation in the gene for hemoglobin results in the red blood cells becoming sticky, rigid, and irregularly shaped. These irregularly shaped red blood cells block the flow of blood throughout the body. A single base mutation is responsible for these irregularly shaped blood cells
Which of these mutations most likely results in the mutated hemoglobin gene?
A certain mutation in the gene for hemoglobin results in the red blood cells becoming sticky, rigid, and irregularly shaped. These irregularly shaped red blood cells block the flow of blood throughout the body. A single base mutation is responsible for these irregularly shaped blood cells
Which of these mutations most likely results in the mutated hemoglobin gene?
1
This model of the cell cycle includes two arrows that each represent a process in the cycle.
What do the two arrows represent?
This model of the cell cycle includes two arrows that each represent a process in the cycle.
What do the two arrows represent?