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Digital SAT Math Practice Questions and Answers
When does the sign change in an inequality?When multiplying or dividing both sides with a negative number 
 
Number of solutionsone solution: x/y = a 
no solution: a = b 
infinite solutions: a = a 
 
What is slope intercept form? Identify what each variable means.y= mx + b 
 
m = slope (or "rate") 
b = y-int 
 
What is the formula for slope?y2-y1 / x2-x1 or rise/run 
 
Parallel Lines-same slope (different y-intercept) 
- do not intersect (unless they overlap completely) 
 
Perpendicular Lines...
- Exam (elaborations)
- • 1 pages •
When does the sign change in an inequality?When multiplying or dividing both sides with a negative number 
 
Number of solutionsone solution: x/y = a 
no solution: a = b 
infinite solutions: a = a 
 
What is slope intercept form? Identify what each variable means.y= mx + b 
 
m = slope (or "rate") 
b = y-int 
 
What is the formula for slope?y2-y1 / x2-x1 or rise/run 
 
Parallel Lines-same slope (different y-intercept) 
- do not intersect (unless they overlap completely) 
 
Perpendicular Lines...
An Introduction to Brain and Behavior Revision Questions and Answers
How many Neurons (nerve cells) are in the brain? 87 billion - making up half the 
brain cells. 
How many glial cells are in the brain? 86 billion - making up half the brain cells. 
Neurons (nerve cells) excitable cells that transmit electrical signals 
Glial cells cells in the nervous system that support, nourish, and protect neurons 
CNS (central nervous system) brain and spinal cord 
PNS (peripheral nervous system) the sensory and motor neurons that connect the 
CNS to the rest of the body 
...
- Exam (elaborations)
- • 5 pages •
How many Neurons (nerve cells) are in the brain? 87 billion - making up half the 
brain cells. 
How many glial cells are in the brain? 86 billion - making up half the brain cells. 
Neurons (nerve cells) excitable cells that transmit electrical signals 
Glial cells cells in the nervous system that support, nourish, and protect neurons 
CNS (central nervous system) brain and spinal cord 
PNS (peripheral nervous system) the sensory and motor neurons that connect the 
CNS to the rest of the body 
...
Expertly Crafted Brain and Behavior Exam Questions and Answers
4 step of neurotransmitters 1. Chemical must be synthesized in the nueron 
2. When neuron is active chemical must be released and produce a response in some 
target 
3. A response must be obtained when a chemical is placed on its target 
4. A chemical must exist for removing the chemical from its site of action 
How is ACh synthesized? Use of enzyme "Choline acetyltransferase" 
Acetly CoA + Choline > enzyme > ACh 
How is ACh made? Acetyl CoA carries acetate to the transmitter systems i...
- Exam (elaborations)
- • 7 pages •
4 step of neurotransmitters 1. Chemical must be synthesized in the nueron 
2. When neuron is active chemical must be released and produce a response in some 
target 
3. A response must be obtained when a chemical is placed on its target 
4. A chemical must exist for removing the chemical from its site of action 
How is ACh synthesized? Use of enzyme "Choline acetyltransferase" 
Acetly CoA + Choline > enzyme > ACh 
How is ACh made? Acetyl CoA carries acetate to the transmitter systems i...
Brain and Behavior Examination Questions and Expert Solutions 2023/2024
Fnirs (functional near-infrared spectroscopy)Noninvasive technique that gathers light 
transmitted through cortical tissue to image blood-oxygen consumption; form of optical 
tomography. 
NeuropsychologyStudy of the relations between brain function and behavior 
Behavioral neurosciencestudy of the biological bases of behavior 
Stereotaxic appartatusSurgical instrument that permits the researcher to target a 
specific part of the brain 
AkinesiaSlowness or absence of movement 
Deep-brain stimu...
- Exam (elaborations)
- • 3 pages •
Fnirs (functional near-infrared spectroscopy)Noninvasive technique that gathers light 
transmitted through cortical tissue to image blood-oxygen consumption; form of optical 
tomography. 
NeuropsychologyStudy of the relations between brain function and behavior 
Behavioral neurosciencestudy of the biological bases of behavior 
Stereotaxic appartatusSurgical instrument that permits the researcher to target a 
specific part of the brain 
AkinesiaSlowness or absence of movement 
Deep-brain stimu...
An Introduction to Brain and Behavior Practice Questions and Answers
Cerebrum Major structure of the forebrain that consists of two virtually identical 
hemispheres (left and right) and is responsible for most conscious behavior. 
Hemisphere "Half a Sphere", referring to one side of the cerebrum. 
Brainstem Central structure of the brain responsible for most unconscious behavior. 
Cerebellum Major structure of the branstem specialized for coordination and learning 
skilled movements. In large-brained animals, the cerebellum may also have a role in 
coordinat...
- Exam (elaborations)
- • 3 pages •
Cerebrum Major structure of the forebrain that consists of two virtually identical 
hemispheres (left and right) and is responsible for most conscious behavior. 
Hemisphere "Half a Sphere", referring to one side of the cerebrum. 
Brainstem Central structure of the brain responsible for most unconscious behavior. 
Cerebellum Major structure of the branstem specialized for coordination and learning 
skilled movements. In large-brained animals, the cerebellum may also have a role in 
coordinat...
BTEC Applied Science – Bonding Practice Questions and Answers
Ion another name for a charged particle (when an atom loses or gains electrons) 
Ionic Bonding The strong force of attraction between positive metal ion and negative 
non-metal ion 
Covalent Bonding The strong force of attraction between positive nuclei and the 
shared pair of electrons 
Metallic Bonding The strong force of attraction between positive metal ions and the 
surrounding sea of free electrons 
Molecule atoms joined by covalent bonds 
Free (delocalised) electrons electrons that hav...
- Exam (elaborations)
- • 2 pages •
Ion another name for a charged particle (when an atom loses or gains electrons) 
Ionic Bonding The strong force of attraction between positive metal ion and negative 
non-metal ion 
Covalent Bonding The strong force of attraction between positive nuclei and the 
shared pair of electrons 
Metallic Bonding The strong force of attraction between positive metal ions and the 
surrounding sea of free electrons 
Molecule atoms joined by covalent bonds 
Free (delocalised) electrons electrons that hav...
AS - Applied Science Unit 1 Biology Revision Questions and Solutions
Prokaryotic cell Cell that does not have a nucleus or other membrane-bound 
organelles. 
Magnification The number of times larger an image is compared with the real size of 
the object 
Organelle specialized structure that performs important cellular functions within a 
eukaryotic cell. 
Resolution The ability to distinguish between objects that are close together. 
Nucleus A part of the cell containing DNA and RNA and responsible for growth and 
reproduction. 
Mitochondria ATP production
- Exam (elaborations)
- • 5 pages •
Prokaryotic cell Cell that does not have a nucleus or other membrane-bound 
organelles. 
Magnification The number of times larger an image is compared with the real size of 
the object 
Organelle specialized structure that performs important cellular functions within a 
eukaryotic cell. 
Resolution The ability to distinguish between objects that are close together. 
Nucleus A part of the cell containing DNA and RNA and responsible for growth and 
reproduction. 
Mitochondria ATP production
Biology Unit 5 BTEC National Applied Science Questions and Answers
What is urinalysis? Measure the products excreted from the body via urine and can 
be used to detect many different diseases and chemical substances in the body. 
Through what method is the water leaving your body? (these are uncontrolled factors) 
-sweating 
-illness 
-exhalation 
-too much of salt 
what is the thing that monitors the level of water in blood? -the volume of water in the 
blood is monitored by hypothalamus in the brain 
why ion's level should kept in control? -ion level pre...
- Exam (elaborations)
- • 5 pages •
What is urinalysis? Measure the products excreted from the body via urine and can 
be used to detect many different diseases and chemical substances in the body. 
Through what method is the water leaving your body? (these are uncontrolled factors) 
-sweating 
-illness 
-exhalation 
-too much of salt 
what is the thing that monitors the level of water in blood? -the volume of water in the 
blood is monitored by hypothalamus in the brain 
why ion's level should kept in control? -ion level pre...
BTEC Applied Science Questions and Answers
Are bacteria prokaryotes or eukaryotes? bacteria 
name an advantage of visible light microscope they can observe sub-cellular 
structures 
name a disadvantage of light microscope does not have a very high magnification or 
resolution 
name an advantage of electron microscope has a high resolution and magnification 
name a disadvantage of electron microscope they destroy the sample 
what is the function of the golgi apparatus?
- Exam (elaborations)
- • 2 pages •
Are bacteria prokaryotes or eukaryotes? bacteria 
name an advantage of visible light microscope they can observe sub-cellular 
structures 
name a disadvantage of light microscope does not have a very high magnification or 
resolution 
name an advantage of electron microscope has a high resolution and magnification 
name a disadvantage of electron microscope they destroy the sample 
what is the function of the golgi apparatus?
BTEC Applied Science Unit 3 Expertly Crafted Questions and Answers
What is a hypothesis? An Idea that you can test using practical experiments 
What are the Key features of a good hypothesis? A good Hypothesis must: 
Be able to be tested scientifically 
Relate one dependent variable to on independent variable 
What is a Null Hypothesis? States that there is no relationship or causality, for 
example, no relation between the temperature and the rate of reaction. 
What does qualitative data refer to? It refers to the appearance or value of 
something, such as t...
- Exam (elaborations)
- • 10 pages •
What is a hypothesis? An Idea that you can test using practical experiments 
What are the Key features of a good hypothesis? A good Hypothesis must: 
Be able to be tested scientifically 
Relate one dependent variable to on independent variable 
What is a Null Hypothesis? States that there is no relationship or causality, for 
example, no relation between the temperature and the rate of reaction. 
What does qualitative data refer to? It refers to the appearance or value of 
something, such as t...