Biology A Semester Exam
Why are inferences a vital part of the scientific process? (1 point)
they are conclusions based on facts
they are facts and patterns that are studied
they are foundations for hypotheses
they are the data that supports a claim
Which option best describes a scientific consensus? (1 point)
an observation made by a scientist that is supported by experimentation and investigation
a general agreement among many a few scientists that is supported by a experimentation and investigation
an observation made by a scientist that is supported by evidence and reasoning
Nucleotides contain sugar, a phosphate group, and a nitrogen base. Which of the following is a nitrogen base? ( 1 point)
tyrosine
ribose
deoxyribose
guanine
Identify the answer choice that correctly list the chemical groups found in all 20 amino acids.(1 point)
5 and 6
1 and 3
2 and 3
2 and 4
Identify the statement below that is true about chemical reactions ( 1 point)
Exothermic reactions have products with more energy compared to the reactants
Endothermic reactions tend to increase the temperature of their surroundings
Exothermic reactions do not require activation energy in order to get started
Exothermic reactions tend to release heat energy to the surrounding environment
How is lock and key used to describe the action of enzymes? (1 point)
Enzymes are able to create gaps in cell walls that allow reactants to enter cells
Enzymes have shape that specifically fits the products like a key in a lock
Enzymes are able to create gaps in cell walls that allow products to leave cells
1 answer
4 answers