Bio 100 test 1 😜

A fossil is found to have 12.5% (half of 25%) of C14 remaining, approximately how many years have elapsed since the organism died?

17190

During the early stages of development, a human embryo could very easily be identified when compared to a rabbit, mice, or chicken embryos by someone who is not a trained embryologist.

False

Fossils are typically dated using only one measurement, such as carbon dating.

False

In order to be classified as a living thing, an organism must have consciousness

False

Science can answer the question: how did life begin?

False

The scientific method is a linear process. Scientists start with an observation and end with a conclusion and rarely revisit their hypothesis or experimental design.

False

viruses are macromolecules and have the ability to evolve, respond, reproduce using a host, and are organized. Viruses do not utilize energy or maintain homeostasis. Based on this information viruses are considered living.

False

when looking at comparative physiology, there are NOT many examples of different species using similar organs to serve a similar function.

False

Generally speaking the deeper we dig into the earth the ______ the rocks/fossils are and the organisms are _____ complex

Older and less

for the following example of an experiment, identify the independent and dependent variables: Corn plant height is measured for plants with and without added nitrogen.

Plants with and without nitrogen is independent variable corn plant height is the dependent variable

modern day elephants have an incredible memory. In the wild, an elephants memory is key to its survival (they can recognize herd members that left almost a decade ago from elephants they've never met- critical to herd safety) considering the four criteria of natural selection, what must have been true about the elephants offspring in history?

The elephants with longer memory tended to survive to reproductive age

which of the following is NOT evidence for common ancestry ?

The process of natural selection

In most parts of the world, adults are unable to drink milk because their body switches off the intestinal production of lactase, an enzyme that digest the sugar in the milk, after weaning as infants/ toddlers. this is called lactose intolerance. However, in North America and Europe we've seen a steady increase in lactose tolerance and up to 70%of adults happily drink milk. What does this suggest?

This suggests that being able to drink milk into adulthood provided a strong evolutionary advantage in north America and Europe

A balanced view on the nature of science considers the subjective nature of humans, while recognizing the goal of objective analysis of our world.

True

All life so far discovered uses the process of the central dogma: using DNA (genetic blueprint) as the instruction manual to make proteins.

True

Related organisms tend to be found in close geographic regions

True

an anti-science view of the nature of science means an individual is skeptical about science/ scientists being unbiased

True

modern day elephants have an incredible memory. In the wild, an elephants memory is key to its survival (they can recognize herd members that left almost a decade ago from elephants they've never met- critical to herd safety) By random chance, a mutation may have occurred in an elephant that gave it even longer memory than was seen in the parents.

True

A hypothesis is:

a prediction based on evidence and research

which property is shared by living things but not with a rock?

a. reproduction b. Evolutionary adaptation c. energy utilization d. responsiveness e. all of the above answer: E

modern day elephants have an incredible memory. In the wild, an elephants memory is key to its survival (they can recognize herd members that left almost a decade ago from elephants they've never met- critical to herd safety) Long term memory in elephants is an example of:

an adaptation

which of the following is the correct hierarchy of matter in living things from smallest to largest?

atoms, molecules, organelles, cells, tissues, organs, organ systems, organism

which of the following is NOT a criteria necessary for natural selection to occur?

end goal for the ideal organism

Short answer #25

short answer