akunuru639

Both algae and plants have the ability to _________________________.

the cells that provide support for the neurons of the central nervous system are ____ and those that provide support for the peripheral nervous system are ____ _____.

Question 1

Match the step of the evidence-based approach to public health to the term/item that belongs there. There is a best choice for each step.

Question 2

Match the public health service to the appropriate core function of public health.

Question 3

Match the following:

What percentage of US local health departments employs health educators?

A. 15-35%

B. 0-10%

C. 75% or more

D. 40-60%

You collect the following data on all the snake species found in 3 communities in the desert. In Community 1 you find 5 species (species A through E), in Community 2 you find 6 species, and in Community 3 you find 5 species. Shown below is the proportional abundance of each snake species in the 3 communities. Species Community 1 Community 2 Community 3 (abundance) (abundance) (abundance) A 0.23 0.71 0.44 B 0.19 0.22 0.28 C 0.13 0.03 0.21 D 0.12 0.02 0.06 E 0.11 0.01 0.01 F 0.09 0.01 G 0.08 3) Which community has the greatest snake species diversity? a. community 1 b. community 2 c. community 3 d. you can’t tell without further information (such as a specific equation or index to use)

The relative abundance of a tree with 100 individuals in a community of 1000 would be _______

Communities with low evenness will have rank-abundance curves _______

When studying quantitative traits such as height, the term variability refers to

28. Which of the following is NOT a sex-linked trait? A) Hemophilia B) Red-green color blindness C) Testicles D) Cystic fibrosis

When grass is mowed to the ground it can often continue to grow, because

A. its primary meristem is located near the ground.

B. the cutting stimulates hormones that cause growth.

C. its allocation pattern gives it the ability to remobilize carbon from below-ground.

D. it has lateral meristems that are activated by injury.

What action of cyclin-CDK complexes causes the cell cycle to progress?

A. The breakdown of lipid molecules

B. The phosphorylation of protein substrates

C. The decomposition of carbohydrates

D. The synthesis of amino acids

Major histocompatibility antigens are ?

Select Correct Answer

A) antigens that provoke allergic reactions.

B) antigens attached to foreign invaders.

C) glycoproteins found in the cytoplasmic membranes of most vertebrate animal cells that serve as ID markers

D) not really antigens, but rather antibodies produced to mask foreign antigens.

Which of the following descriptions of the Lymphatic System is FALSE?

A) lymph has similar composition to blood plasma

B) primary lyphoid organs include lymph nodes

C) provides a one-way trip from the extremities back to the heart

A missing portion of a chromosome, such as the missing portion of the short arm of chromosome 5, in Cri-du-Chat Syndrome is known as:

a. Deletion b. Duplication c. Hyperploidy d. Polyploidy e. Trisomy

A boy with Klinefelter syndrome (47,XXY) is born to a mother who is phenotypically normal and a father who has the X- linked skin condition called anhidrotic ectodermal dysplasia. The mother’s skin is completely normal with no signs of the skin abnormality. In contrast, her son has patches of normal skin and patches of abnormal skin.

a. The father must have contributed the abnormal X-linked gene. b. The mother must have contributed the abnormal X-linked gene.

c. Both parents must have contributed the abnormal X-linked gene. d. The sons condition must be the consequence of a spontaneous mutation.

What is a ligand?

a) an integral membrane protien associated with G protiens

b) a DNA-binding protiens that alters gene expression

c) a cytoplasmic second messenger molecule

d) a protien that chemically modifies another protien

e) a signaling molecule that binds to a receptor

If a messenger molecule binds to a protein on the cell membrane instead of entering the cell directly, the sinaling system involved is probably what?

a. radiofrequency

b. second-messenger

c. slow

1. Two of the below lipids have distinct structural roles. They are ___ and ___ and their characteristics ensure ___.

a. steroids and triglycerides, insulation.

b. amino acids and nucleotides, fibrous structures.

c. phospolipids and cholesterol, membrane fluidity

2. One lipid we learned about can operate as a first-messenger molecule, directly entering the cell to deliver its molecular message. This lipid class is the ___.

a. amino acid

b. steroid

c. triglyceride

3. Which level of protein structure determines whether or not the protein will ultimately be functional?

a. primary

b. tertiary

c. quaternary

4. For each of the following , if it relates to transcription, put (A). if it relates to translation, put (B). If it relates to both put (C)

-involves three types of RNA working together

-the result is a sequence of nucleotides

-the result is a sequence of amino acids

5. If a messenger molecule binds to a protein on the cell membrane instead of entering the cell directly, the sinaling system involved is probably what?

a. radiofrequency

b. second-messenger

c. slow

6. A transmembrane protein has the job of grabbing cholesterol from the blood and pulling it into the cell as part of a group of the same proteins all adjacent to each other. This process of pulling molecules into the cell is called what?

a. pinocytosis

b. recpetor-mediated endocytosis

c. exocytosis

7. If the above mentioned protein is assembled improperly so that it doesnt get the label to be embedded in the cell membrane and instead winds up in a lysosome, what health effect will it have?

a. none

b. high cellular

c. high blood cholesterol

The three steps of the cardiac cycle begin at mid-late diastole and end at early diastole. In between, have both the atria and ventricles contracted?

a. yes

b. no

c. only on the left

Most of the ventricle filling occurs A. during atrial systole. B. when the AV valve is closed. C. during ventricular systole D. during atrial diastole E. during isovolumetric contraction