What are the three domains of life

What are the three domains of life?

In the hierarchy of classification, the term Homo sapiens describes the organism’s:

A. genus and species

B. phylum and genus

C. kingdom and phylum

D. order and species

Reproductive barriers keep species distinct. Which of the following is NOT a reproductive barrier?

A. Hybrid sterility

B. Habitat isolation

C. Temporal isolation

D. Hybrid vigor

How can stem cells replenish tissues when they rarely divide?

The following are types of stem cells EX CEPT:

A. unipotent

B. bipotent

C. multipotent

D. pluripotent

The order of the stages of embryogenesis are:

A. blastocyst, gastrula, organogenesis, cleavage, histogenesis, zygote

B. zygote, gastrula, blastocyst, cleavage, organogenesis, histogenesis

C. zygote, cleavage, gastrula, blastocyst, histogenesis, organogenesis

D. zygote, cleavage, blastocyst, gastrula, organogenesis, histogenesis

What is a teratoma?

Name one disease covered in class that has the potential to cause birth defects

Name the three tissue types formed during gastrulation that give rise to all tissues of the body

The following statements about alleles are true EXCEPT:

A. an allele is an alternate form of a gene

B. people inherit two alleles for a gene, one from the mother and one from the father

C. More than two alleles may exist for a certain gene

D. All the above statements are true

E. None of the above statements are true

A wild-type organism:

A. always has dominant alleles

B. is the most common type found in nature

C. is always homozygous

D. all of the above

The father of modern genetics is:

A. Punnett

B. Darwin

C. Mendel

D. Bob

What is a phenotype? A genotype?

The social taboo of inbreeding has a biological basis. What is it?

A. There is no biological basis. It’s just creepy.

B. After a few generations it creates genetically identical people

C. Inbreeding makes dominant genes weaker, therefore promoting incomplete dominance

D. It creates more diseases and birth defects due to the increased chances of homozygous recessive offspring

If you cross two individuals that are AABbCc x AaBbCc, what is the probability that you would get an offspring that is AABBCC?

You must do a testcross to find out whether your plant is homozygous or heterozygous for purple flowers. Purple flowers (P) are dominant to yellow flowers (p).

What type of plant do you have to cross your unknown with to perform this testcross? Why?
You cross the plants and get ½ offspring with purple flowers and ½ with yellow flowers. Is your unknown homozygous or heterozygous? Write out the cross results.
You take your plant and cross it with a heterozygote for purple flowers. What is the frequency of the expected genotypes of the offspring of this cross? The phenotypes?

Give an example of how environment can affect a genetic phenotype

Provide definitions and real-life examples for two of the following terms:

Incomplete dominance

Multiple alleles

Pleiotropy

Polygenic inheritance

The reason males have a higher incidence of sex-linked genetic disorders is:

A. They are unlucky

B. Alleles on the Y chromosome can’t mask recessive genetic disorder alleles on the X chromosome

C. The Y chromosome contains lots of alleles for genetic disorders

D. None of the above

True or False: all genetic disease are caused by recessive alleles

The following factors allow coordinated contraction of the heart EXCEPT:

A. Branched cardiac muscle cells

B. Sinoatrial node

C. Atrioventricular node

D. These all contribute to coordinated heart contraction

The following are considered connective tissue EXCEPT:

A. skin

B. bone

C. blood

D. adipose tissue

Name the four types of tissues in the body

Match the organ systems of the body with their function: Choose the best answer. Each may only be used once.

A. Sensing and responding to the environment

B. Intake of oxygen

C. Physical movement

D. Protection of the body against pathogens

E. Creation of gametes

F. Movement of nutrients throughout the body

G. Structure and protection

H. Release of hormones

I. Elimination of undigested food

J. Elimination of waste via the kidneys

K. Creation of gametes

Digestive system
Respiratory system
Circulatory system
Lymphatic and immune system
Excretory system
Endocrine system
Reproductive system
Nervous system
Muscular system
Skeletal and integumentary systems

Animals (including humans) that regulate body temperature through their metabolism are called:

Ectotherms
Ectoconformers
Endoregulators
Endotherms

The following accessory organs secrete enzymes that aid in digestion EXCEPT:

A. liver

B. adrenal glands

C. pancreas

D. salivary glands

Choose the correct order by which food travels through the digestive system is:

A. oral cavity, trachea, stomach, jejunum, colon

B. pharynx, esophagus, stomach, ileum, rectum

C. oral cavity, jejunum, stomach, large intestine

D. pharynx, stomach, colon, epiglottis

Osmoregulation involves the retention or secretion of what substance? What is the term for the movement of this substance?

These structures help control the movement of material through the digestive tract

A. glands

B. microvilli

C. sphincters

D. nodes

Some animals are able to regulate their body temperature through their metabolism. What property of energy conversion allows this to happen?

The role of the atrioventricular node is to:

A. act as a pacemaker for the heart

B. delay the signal coming from the SA node

C. spread the electrical pulse to the atria

D. none of the above

Nutrients and other molecules from the blood pass into the interstitial fluid and can be taken up by cells via:

A. diffusion

B. receptor-mediated endocytosis

C. symport

D. antiport

E. all of the above

Describe the process by which blood clots

What are the hallmarks of inflammation?

These immune cells can engulf bacteria or viruses and are the bridge between innate and adaptive immunity

A. neutrophils

B. macrophages

C. T cell

D. B cells

The piece of a pathogen that is presented on the cell surface to activate T cells and B cells is called:

A. antibody

B. antivirus

C. antidote

D. antigen