Question |
Answer |
What is the pupil of your eye? |
the hole in the eye through which light enters. If the lights in a dark room are turned on, your pupil gets smaller. |
Which part of the eye controls the amount of light that is allowed to enter? |
iris |
What are the photoreceptor cells that detect different color of light in the human eye? |
cone cells |
What does the optic nerve in your eye do? |
it sends nerve impulses to the brain |
Rod cells respond to _____________________________. |
White, black, and gray and detect light. |
The largest part of the brain. It controls the senses (touch, taste, smell, vision, and hearing). |
cerebrum |
3 parts of the brain |
cerebrum, cerebellum, and the medulla |
central nervous system includes |
the brain and the spinal cord |
What does your outer ear do? |
act like a funnel to collect sound waves |
The eardrum is in the middle ear. What does the ear drum do? |
vibrates in response to sound in the ear canal |
Why is the inner ear important? |
provides our sense of hearing and our sense of balance. |
What does the circulatory system do for our bodies? |
Delivers oxygen to our body and removes wastes and carbon dioxide from the cells. |
What are the important parts of the circulatory system? |
heart, blood, and blood vessels? |
What are the three blood vessels? |
arteries, veins, and capillaries |
Which body system delivers oxygen and removes wastes from the cells? |
circulatory system, also know as the body's "transport system" |
What are alveoli? |
Where gas exchange happens, found in the lungs, and are surrounded by capillaries. |
What are the smallest blood vessels in the body? |
Capillaries |
Which blood vessel brings back blood towards the heart? |
veins |
What is the function of the right side of the heart? |
collect oxygen-poor blood from the body and pump it to the lungs |
What is the function of the left side of the heart? |
collects oxygen-RICH blood from the lungs and pumps it to the body |
Which blood vessels carry blood away from the heart? |
arteries |
What is the function of red blood cells? |
carry oxygen to the cells, |
Why are white blood cells important? |
they are a part of the immune system and help fight infections. |
Which body system consists of the lungs and passageways that lead to the lungs? |
the respiratory system |
What is process by which the body exchanges and uses gases? |
respiration |
Which body system breaks down food using enzymes and absorbs nutrients into the blood? |
digestive system |
Which organ mixes up digestive juices with swallowed food and liquids and sends it to the small intestine? |
stomach |
Which organ sits behind the stomach and produces enzymes and bicarbonate to neutralize stomach acid when food enters the duodenum? |
pancreas |
What is the job of the large intestine? |
absorb water and package waste. |
Why are the tiny, finger-like projections called villi important in the small intestine? |
they increase surface area for absorption of nutrients |
Some examples of vestigial organs? |
human's appendix and whale leg bones |
What is mitosis? |
the division of a cell's nucleus |
Why is mitosis important? |
repairs damaged/injured cells, growth, and replaces dead cells |
Which phase of mitosis shows the chromosomes lined up in the center of the cell? |
metaphase |
Which phase of mitosis shows the chromosomes pulling apart? |
anaphase |
Which phase of mitosis shows 2 nucleus? |
telophase |
During which phase is the DNA copied/replicated? |
Interphase |
What is the base pair rule for MRNA? |
G goes with C. C goes with G. T goes with A. A goes with U. |
What is the base pair rule for DNA? |
G goes with C. C goes with G. A goes with T. T goes with A. |
The 4 bases of RNA are: |
AGUC |
What is a change in the hereditary material called? |
mutation |
What is the form of a trait that an organism displays? |
Phenotype (for example, tall or short) |
The letter code for a trait |
genotype (for example, TT or tt) |
The form of a trait that always shows up when uppercase allele is present |
dominant trait |
The form of trait that always hides when dominant trait is present |
recessive trait |
Genotypes for dominant traits |
RR (homozygous dominant) or Rr (heterozygous) |
Genotypes for recessive traits |
rr (homozygous recessive) |
What makes up proteins in our cells? |
amino acids |
What is the tool used to determine the possible phenotypes of offspring for a certain trait? |
Punnett Square |
How does studying DNA base sequence help us learn about the relationships of different species? |
the more similar their base sequence, the more closely related the species are |
What happens when a species produces too many offspring? |
only the healthiest (best fit) will survive |
Which tool is used to show relationships between living species and their ancestors? |
a cladogram |
Characteristics of prokaryotic cells |
no nucleus, bacteria, loose DNA |
Characteristics of eukaryotic cells |
nucleus, DNA is found in nucleus |
How is bacteria classified? |
shape (spiral, rod, and ball shape) |
Where do Archaebacteria live? |
in extreme environments, such as volcanoes. |
What is a virus? |
tiny, non-living particles made up of genetic material and proteins |
What are some characteristics of a virus? |
does not reproduce, eat or make its own food. |