Exam (elaborations)
BIOS 255 Lab Practicum Review – Qs And As
BIOS 255 Lab Practicum Review – Qs And As
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BIOS 255 Lab Practicum Review – Qs And AsWhich of the following refers to making changes to better suit a new or
changing environment? ✔️Ans - Adaptation
This is when an organisms adjust in order to get used to changes in its
environment. ✔️Ans - Acclimatization
This is a physiological response to external or internal stimulus such as heat
or sound. ✔️Ans - Response to Stimuli
The tendency for similar cells to group together into tissues in the body.
✔️Ans - Organization
In the scientific method this is a variable that can be manipulated or adjusted -
this is the variable that they experimenter controls. ✔️Ans - Independent
Variable
This is the variable that is being tested, what is being measured in the
experiment. ✔️Ans - Dependent Variable
When a hypothesis states that there will be no significant difference in the
outcome of the experiment. ✔️Ans - Null Hypothesis
In the "Efficacy of a new facial cream" lab activity, which of the following
would be an acceptable null hypothesis? ✔️Ans - The facial cream has no
effect on the resolution of acne lesions.
In the "Efficacy of a new facial cream" lab activity, what would be the
dependent variable? ✔️Ans - Acne lesion progression
In the "Efficacy of a new facial cream" lab activity, what is the purpose of the
placebo group?
1. To provide a baseline for acne occurrence without treatment.
2. To help ensure that any results seen are due to treatment and not random
occurrence.
3. To provide the researchers with an alternative treatment option. ✔️Ans -
A and B
, Which of the following is true of Prokaryotic cells? ✔️Ans - Cells without a
nucleus.
This defines a phospholipid. ✔️Ans - Molecule found in membranes with
amphipathic properties.
Specialized structure within a cell that performs a function ✔️Ans -
Organelle
Found in plants, this is responsible for photosynthesis ✔️Ans - Chloroplast
This is found in cells and is responsible for making proteins ✔️Ans -
Ribosomes
Bubbles have characteristics that make them similar to a cell membranes and
other characteristics that make them unlike a cell membrane. Which of the
following is a characteristics that makes a bubble similar to a cell membrane?
✔️Ans - The bubble is a barrier that separates the inside contents from the
outside.
In Prokaryotic cells the DNA is located in the ________, and in Eukaryotic cells
the DNA is located in the ______. ✔️Ans - cytoplasm, nucleus
Which of the following is true regarding the comparison of prokaryotic and
eukaryotic cells? ✔️Ans - Prokaryotic cells are smaller and less complex
than Eukaryotic cells.
This organelle contains enzymes to degrade and dispose of cell waste ✔️Ans
- Lysosomes
Interconnected tubules and filaments that provide structure and support for
the cell. ✔️Ans - Cytoskeleton
A cell with one complete set of chromosomes (unpaired) is called ✔️Ans -
Haploid
In this week's exercise (Exercise 12, activity 2) you created a Punnett square
for goats with black fur dominant over red fur. A homozygous black female is
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