Life Science test prep Review

Flowers must be pollinated in order to reproduce. Pollen can be transferred from one plant to another by means of wind, water, or animal dispersal. Which of the following characteristics of plants is most likely to assist in pollen transfer by animal dispersal?

• Sweet scent

• Colorful pedals

• Nectar

• All of the above

The blue-footed booby is a marine bird that has feet that are blue in color, which is due to a diet of fresh fish. The more fish the male bird catches and eats, the brighter his feet become. The male blue-footed booby likes to put on a dance for any approaching female to show off the color of his feet. What could be the reason for this dance?

• To show that the male bird is comfortable with the area

• To get the female to give up her nest

• To get the female to move her nest to a new location

• To show the male bird’s ability to hunt so he can attract the female as a mate

Environmental conditions can affect the growth of an organism. Which condition below does NOT represent an environmental condition?

• Mutation passed down at birth

• Availability of food

• Amount of light

• Amount of water

Which of the following represents a process that can influence the genetic factors of an organism and influence the traits of the organism’s offspring?

• Cross-breeding to create disease-resistant strawberry crops

• Creating human antibodies to fight viruses

• Analyzing a family tree

• Growing a new vine from a seedling

It was once thought that a person’s risk of getting cancer could only be determined by family history and lifestyle choices. Today, there are lab tests that can be done to help identify if a person has a higher risk based on their genetic makeup. What evidence has helped researchers come up with these blood tests?

• Most cancer patients admit to having poor eating habits, resulting in high blood cholesterol.

• Most cancer patients have a protein found in their blood as a result of a genetic mutation.

• Most cancer patients have poor exercise habits, resulting in high blood pressure.

• Most cancer patients do not have any common blood factors, including specific proteins.

Which of the following would be the most immediate result of a gene mutation in an organism?

• A change in a protein produced by the organism

• Increased reproductive success of the organism

• Shortened life span of the organism

• Decreased need for resources by the organism

Only one parent is involved in the process of asexual reproduction. Why is this an advantage?

• The identical DNA from the parent is being passed on. If there is an error or negative mutation in the parent’s DNA, this will be passed on to the offspring

• It can be done at any time and is useful in the repair and/or replacement of body parts that have been damaged or lost

• It takes a long time but uses no energy to find a mate

• Even if one of the sex cells has a negative mutation or a weak trait in its DNA, the other sex cell is likely to be “normal.”

In pea plants, the smooth coat allele (R) is dominant over the wrinkled coat allele (r). One part of the Punnett square is filled in, but the remainder is blank. Which of the following best describes the correct method for filling in the remainder of the squares?

• RR = top right, Rr = bottom left

• Rr = top right, Rr = bottom left

• RR = top right, rr = bottom left

• Rr = top right, rr = bottom left

Based on the relative positions of the fossils in the diagrams from three different locations, which of the following conclusions is best supported by the fossil evidence?

• • 
    Auritimidae was the last trilobite to appear.

     

  • .

     

  •  

• Cyclopygidae appeared after Ceratopigidae

• Remopleiridae appeared before Auritimidae.

• Cyclopygidae was the first trilobite to appear.

The trend is for an increasing number of teeth. A fossil of a new species of this type of fish (W. amatequorum) is discovered. The complete fossil skeleton is found, and it has 34 teeth. The most reasonable estimation for the age of this fossil would be which of the following?

• About 20 million years old

• About 30 million years old

• About 70 million years old

• About 100 million years old