Mometrix free practice test

Question 1

Homeostatic mechanisms bring the body ___ to baseline

Answer 1

back

Question 2

Which of the following are examples of homeostatic mechanisms (select all that apply)
* consuming excess calories to gain weight
* lifting weights to increase muscle mass
* shivering when body temp falls
* secreting insulin to decrease blood sugar concentration
* increasing heart rate when blood pressure is low

Answer 2

C, D, E

Question 3

Where is the gastrocnemius vein in relation to the femoral vein?

Answer 3

distal

Question 4

Which is NOT a type of protein?
* fibrous
* membrane
* globular
* unsaturated

Answer 4

unsaturated

Question 5

Which of the following is true regarding adipocytes?

Answer 5

they are responsible for storing the fat that is found in adipose tissue

Question 6

Examples of a chemical change

Answer 6

including baking soda in a recipe to make it less sour

Question 7

Examples of physical changes

Answer 7

• phase changes
• adding more water to clay to make it slip
• crystalizing honey to make candy
• releasing compressed gas to make a bottle-rocket launch

Question 8

What is exchanged b/w two or more atoms that undergo ionic bonding?

Answer 8

valence electrons

Question 9

Which of the following anatomical terms is NOT part of the knee?
* medial collateral ligament
* patella
* lateral malleolus
* lateral meniscus

Answer 9

• lateral malleolus is part of the ankle joint

Question 10

Where is the scapula in relation to the olecranon?

Answer 10

superior

Question 11

How many tissue layers does the uterus have? What are they?

Answer 11

• 3
• endometrium, myometrium (smooth), perimetrium

Question 12

Which of the following orbitals is the last to fill?
* 1s
* 3s
* 4p
* 6s

Answer 12

6s

Question 13

Melanin is found in what 3 structures?

Answer 13

• hair, skin, iris

Question 14

A research group is investigating the relationship b/w age and screen usage screen shotted question on laptop question 23 and 24

Question 15

What is formed when the plasma membrane surrounds a particle outside the cell?

Answer 15

endocytic vesicle

Question 16

Why would plants die in salt solution?

Answer 16

• salt sln = hypertonic = more solutes and less water
• water flows from high to low concentration (down concentration gradient) W/O requirement for energy (ATP)
• water flows from plant into sln = plant dries up and dies.

Question 17

A tissue contains ___ of cell types that work together to perform ___ function

Answer 17

• similar type
• same

Question 18

Which of the following statements is FALSE?
* an organelle is a specialized structure in a cell, such as a ribosome
* an organ is made up of similar tissues that perform the same function
* organ systems are tow or more organs performing similar functions
* a tissue contains a variety of cell types that work together to perform a specific function

Answer 18

D

Question 19

What DOES NOT obey the law of independent assortment?

Answer 19

two genes next to each other on a chromosome. (bc probs are linked genes)

Question 20

Which section of the digestive system is responsible for receiving chyme and further digesting it?
* duodenum
* small intestine

Answer 20

duodenum

Question 21

Which of the following is NOT provided as a result of valid research and observations recorded by scientists?
* a better understanding of the physical world
* the ability to predict possible outcomes affected by actions
* the ability to prevent earthquakes and other natural disasters
* the creation of various substances and technologies that enhance our world

Answer 21

C
* although we can use science to predict earthquakes and other natural disasters, there is currently no way of preventing them from occuring

Question 22

Which type of mutation is represented by the following sequence?
* original: 1 2 3 4 5 6
* mutated: 1 5 4 3 2 6

Answer 22

inversion (2 3 4 5 has been inverted to 5 4 3 2)

Question 23

DOes the prostate release hormones?

Answer 23

YES

Question 24

What unit of measurement should be used for an insect that needs to be viewed under a microscope?

Answer 24

micrometers bc need to be viewed under a MICROscope

Question 25

*What unit of measurement should be used for an insect that needs to be viewed under a microscope?*

Answer 25

*micrometers* bc need to be viewed under a MICROscope

Question 26

Plasmas are high temperature collections of ions and free electrons . T or F?

Answer 26

T.

Question 27

What type of feedback is used to maintain homeostasis?

Answer 27

negative

Question 28

Enzymes are what specific?

Answer 28

**substrate** (remember lock and key)

Question 29

Which of the following is NOT a characteristic of enzymes? * they change shape when they bind their substrate * they can catalyze reactions in both forward and reverse directions * their activity is sensitive to change sin temperature * they are always active on more than one kind of substrate

Answer 29

D * enzymes are substrate specific

Question 30

Identify the location where neurostranmitters are stored immediately prior to use. look at image screenshotted of neuro junction on mac (q 46)

Answer 30

B * in synaptic vesicle

Question 31

Which heart chamber is the largest?

Answer 31

**left ventricle**

Question 32

Action potentials are only present at what part of the neuron?

Answer 32

**axon**

Question 33

Every child in a certain family has been diagnosed with autism spectrum disorder. Based on this evidence, what possible conclusion can be drawn about ASD?

Answer 33

ASD may be genetic

Question 34

Correlation can or cannot show cause and effect?

Answer 34

CANNOT (correlation DOES NOT mean causation)