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Question 2
Photoperiodism mean plants are responding to which of the following?
The amount of sugar the leaves make |
The number of hours of light in a day |
Pruning |
Temperature |
Question 2
Normal hemoglobin (“S”) is dominant over sickle cell hemoglobin (“s”). If a person with SS hemoglobin has a child with a person with Ss hemoglobin, what is the chance that person will have sickle cell anemia? (“ss” hemoglobin)?
0%
25%
50%
100%
4 points
Question 4
Which one of the following is an observation Darwin made about natural selection?
Yellow seed color is dominant over green seed color. |
Chromosomes come in pairs. |
Survival and reproduction are not random. |
Humans are descended from apes. |
4 points
QuestiOn 5
Skin color and the amount of ultraviolet (UV) lights affects babies by altering which of the following?
Birth weight |
Brain size |
Resistance to infection |
Vitamin D and folate levels |
4 points
Question 6
Xylem and phloem are __________.
meristematic tissue |
epidermal tissue |
vascular tissue |
ground tissue |
4 points
Question 7
Mules cannot reproduce because of which of the following?
Gamete incompatibility |
Hybrid sterility |
Mechanical isolation |
Spatial isolation |
4 points
Question 8
Which of the following plants is a dicot angiosperm?
Pea |
Corn |
Pine tree |
Fern |
4 points
QuestiOn 9
Which of the following are the reproductive organs of angiosperms?
Stems |
Leaves |
Roots |
Flowers |
4 points
Question 10
An idea about how things work is called a __________.
best guess |
hypothesis |
double blind placebo-controlled study |
conclusion |
4 points
Question 11
List and briefly explain the five things plants require in order to grow. Why is each one of these necessary?
Your response must be a minimum of 75 words.
Question 12
Briefly describe what an allele is, then discuss the differences between dominant and recessive alleles. Provide an example of each type of allele in your discussion.
Your response must be a minimum of 75 words.
Question 13
What are carbohydrates and how are they used by the body? How do complex carbohydrates differ from regular carbohydrates? List five foods that are rich in carbohydrates.
Your response must be a minimum of 75 words.
Question 14
What are Darwin’s four observations concerning natural selection? List and briefly explain each one with an example. How does natural selection impact evolution?
Your response must be a minimum of 200 words.