What is an example of an external stimulus?

you get butterflies when your crush walks by

Why is maintaining homeostasis so important?

it makes your shiver all the time

Why does a person start to sweat when they have a fever?

the sweat cools off the person causing their temperature to lower

the sweat heats up the person causing their temperature to get higher

When does a plant have an increase in turgor pressure?

putting the plant under a light

What is an external stimulus?

a change in the environment that causes you to react

an automatic behavior you cannot control

the reaction you have when a car goes speeding by

When you chew a cracker, complex carbohydrates are breaking down into simple sugars. This is an example of...

large molecules breaking down into small molecules

enzymes in your mouth sending nutrients to your stomach

starches physically combining with other starches

fat molecules chemically combining with other fat molecules

CA Unit 3-4 TEKS 6A, 6C, 7C, 13AB

Here’s a **quiz on Lesson 1: Introduction to Analog Communication (Unit 8)** based on your file 👇 --- # 🧠 **Quiz – Lesson 1 (Analog Communication)** **Marks:** 20 --- ## ✍️ **Part 1: Choose the correct answer (8 marks)** 1. A signal is: a) A device b) A physical quantity that carries information c) A type of wire d) A computer 2. A continuous signal is defined over: a) Discrete values b) Infinite real values c) Only integers d) Binary values 3. Digital signals have: a) Infinite values b) Two values (0 and 1) c) Random values d) Analog values 4. Sampling is used to: a) Increase noise b) Convert analog to digital c) Amplify signals d) Reduce bandwidth 5. A deterministic signal: a) Cannot be predicted b) Has known values c) Is always random d) Has no pattern 6. Even signal satisfies: a) x(t) = -x(-t) b) x(t) = x(-t) c) x(t) = 0 d) x(t) ≠ x(-t) 7. Periodic signal repeats after: a) Time T b) Infinite time c) No time d) Random time 8. A system is: a) A signal only b) Input only c) Takes input and gives output d) A wire --- ## ✍️ **Part 2: Complete (6 marks)** 1. A signal can be represented as __________. 2. Continuous signals are defined over __________ values. 3. Digital signals take values like __________ and __________. 4. A random signal cannot be __________ easily. 5. Odd signal satisfies __________. 6. A periodic signal repeats every __________. --- ## ✍️ **Part 3: True or False (6 marks)** 1. Analog signals are continuous. ( ) 2. Digital signals can take infinite values. ( ) 3. Sampling converts analog to digital signal. ( ) 4. Deterministic signals are predictable. ( ) 5. Odd signals pass through origin. ( ) 6. Aperiodic signals repeat over time. ( ) --- ## 🎯 **Bonus Question (Optional)** Give one example of: * Analog signal * Digital signal -

Ca_Unit3 exam

Ca_Unit 6_exam

Ca_Unit 4 exam

CA-Unit 1 vocabulary (with pinyin)

Ca_Unit 1 Function exam

Ca-Unit 7-exam

Batch: 2021-2025, Unit Test(CA) – I, Paper Code: EC 402

Related quizzes

Related quizzes