Biology Lab Final

Work In Progress. Covers Midterm questions, and quizzes 8-15.

Albinism is an autosomal (not sex-linked) recessive trait. Show how 2 people without Albinism can have a child with albinism?

Two people without Albinism can have a child with Albinism *Because the parents could be carriers of the disorder*.

Autosomal recessive

two copies of an abnormal gene must be present in order for the disease or trait to develop.

Incomplete dominance

Cases in which one allele is not completely dominant over another.

Is it possible for a couple to have a child with AB blood if one type is A and the other type is B?

Yes, in a punnett square, a parent with A type blood and a parent with B type blood would create a child inheriting AB type blood.

The limbs in whales, cats, horses and humans are what kind of structures?

Homologous

What part of the arm is pointed to for #1?

Radius

What part of the arm is pointed to for #2?

Ulna

What part of the arm is #3?

Scapula

What part of the arm is #4?

Phalanges

How is macroevolution different from microevolution?

__**Macro**__**evolution** is effecting an entire species over long periods of time, compared to __**Micro**__**evolution** only effecting a population.

What is Biotic potential?

The growth of a population if it could grow in perfect conditions with no limiting factors such as predators, limited food, or shelter.

Which chamber of the heart receives oxygen poor blood from the body?

**RA** (Right Atrium) then the blood moves to the **RV** (Right Ventricle) ; The right side of the heart receives oxygen poor blood from the superior & inferior veins, which is blood from the body. **Oxygen poor blood goes** __***right***__ **into the heart.**

Which Chamber pumps **oxygen rich** blood to the body?

LV (Left Ventricle); The left side of the heart receives oxygenated blood, but it pushes that blood into the body from the LV. The blood **L**ea**V**es the heart, and goes into the body.

What do the valves in your heart do?

It ensures blood moves in one direction properly.

How does an increase in blood CO2 levels affect respiratory rate? and why?

CO2 levels forces the body to hyperventilate. When the body is lacking oxygen, it finds ways to *push* *out* the carbon and *pull in* more oxygen.

Which ventricle is thicker and why?

The left ventricle. It needs the power to pump out all the oxygenated blood into the body. It is the power house of the heart.

Why is the systolic number larger than the Diastolic when measuring your blood pressure?

Systolic is the contraction of the heart, it puts a lot more effort into pumping blood into the body. Diastolic is the resting rate and in-between beats. It will always read systolic / diastolic

Systolic

Contraction of the heart

Diastolic

The in between resting beats.

how would you know your hematocrit be affected if you spent 2 weeks at high elevation?

You could suffer from __**hypoxia,**__ the hematocrit would increase with the high altitude for long periods of time.

What is the function of **platelets**?

Its function is to form scabs at the opening of a wound, it can prevent bleeding or infections/diseases from entering the body.

True or false: The dependent variable is the variable that can be controlled or manipulated and is usually placed on the x-axis.

False.