question archive 1) You have been investigating how sugar affects yeast growth

1) You have been investigating how sugar affects yeast growth

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1) You have been investigating how sugar affects yeast growth. Your hypothesis is "Increased amounts of sugar in culture media encourages yeast growth". You want to plot your data as a line graph to show the relationship between your variables. How do you set-up your graph?

  A) Sugar concentration on the x- axis (horizontal) and total amount of yeast growth on the y-axis (vertical). 

B) Total amount of yeast growth on the x- axis (horizontal) and Sugar concentration on the y-axis (vertical).

2.In a scientific experiment, what is the control group?

Serves as a basis of comparison with the experimental group

The group that is subjected to the factor whose effect is being tested in the experiment

A group that allows for the simultaneous testing of multiple variables

A control group is required for the validity of discovery science

3.Relative to a pH of 6, a pH of 3 has a ______.

300 times lower H+ concentration

1,000 times lower H+ concentration

3 times higher H+ concentration

1,000 times higher H+ concentration

4.Select the statement that is ***incorrect***

Cells contain either DNA or RNA, never both

Cell are the smallest living things

Most cells can divide to produce new cells

All living organisms are composed of at least one cell

All cells are either prokaryotic or eukaryotic

5.Which of the following is the proper equation for photosynthesis?

  A. 6CO2 + 6O2 + sunlight -> C6H12O6 + 6H2O

B. 6H2O + 6CO2 + sunlight ->C6H12O6 + 6O2

C. C6H12O6 + 6O2 + sunlight -> 6CO2 + 6H2O

D. O2 + H2O + sunlight -> C6H12O6 + CO2

E. C6H12O6 + 6H2O + sun light -> 6CO2 + 6O2

6.Which statement about the inheritance of blood types in humans is most likely to be correct?

Types A and O are codominant to type B

Types B and O are codominant to type A

Types A and B are codominant to type O

Types A and B are codominant to type O

Type A is dominant to B, O, and AB

7.A plant that produces dark brown seeds is crossed with a plant that produces light brown seeds. The seeds of all of the offspring are light brown. What is the most likely explanation?

The light brown allele is dominant.

All of the offspring are homozygous light brown.

The dark brown allele is dominant.

This is an example of incomplete dominance 

8.A couple has two male children. What is the probability that their next child will be female?

100%

75%

50%

33%

25%

0%

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