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Unit 1 Biology Flashcards | StudBud
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Unit 1 Biology
Unit 1 Biology
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#biology
Flashcards
32 cards
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Practice quiz
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Host live
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Questions
32
Answers
1
Which of the following is a behavioural adaptation?
Panting
Dilute urine
Large feet
Huddling
2
A plant cell placed in a hypotonic solution will
Become plasmolysed
Stay the same
Have water move out of the cell
Become turgid
3
Which of the following is not a reason to conserve biodiversity?
Food sources
Future resources
Native species need to be removed
Control of pest species
4
When comparing animal and plant cells, plant cells
Have a small vacuole
Have a cell wall
Do not have chloroplasts
Do not have a nucleus
5
What happens if you drink a large amount of water on a cold day?
You produce a small amount of concentrated urine
You sweat
You do not sweat
You produce a large amount of dilute urine
6
Aerobic respiration
Does not produce ATP
Produces lactic acid
Uses oxygen
Does not need oxygen
7
Simple diffusion involves
Energy
Movement until equilibrium is lost
Substances moving against a concentration gradient
No energy
8
Homeostasis is the maintenance of a stable internal environment
True
False
9
Which of the following is required for photosynthesis to be effective?
Low oxygen concentration
Warm temperature
Low carbon dioxide concentration
Low light intensity
10
The xylem in plants transports
Sugars
Oxygen
Water
Carbon dioxide
11
Which of the following is not a requirement for photosynthesis?
Sunlight
Oxygen
Carbon Dioxide
Chlorophyll
12
The head of a phosopholipid is
Water loving
Hydophilic
Hydrophobic
Water hating
13
A carnivore will have
Canines
Molars
Carnassial teeth
Incisors
14
Diffusion will occur fastest when there is
A greater difference in concentration
A small surface area
A thick barrier
A large distance to travel
15
Which of the following statements about autotrophs is correct?
Are able to photosynthesize
Break down organic matter from simple inorganic matter
Consume other organisms
Build up organic matter from simple inorganic matter
16
Which of the following is not an example of a eukaryotic organism?
Bacteria
Fungi
Plant
Animal
17
Ectotherms
Depend on external sources of heat
Have an in-built source of body heat
Have constant temperatures
Have fluctuating temperatures
18
Which of the following is not a function of the plasma membrane?
Allows movement of some substances in and out
Maintains external environment
Maintains internal environment
Boundary of the cell
19
As the volume of an object increases
Rate of diffusion decreases
Its SA:V ratio decreases
Its surface area decreases
Its SA:V increases
20
Lipases are enzymes that assist with the digestion of
Carbodydrates
Glucose
Lipids
Proteins
21
What comes next? DOMAIN, KINGDOM, PHYLUM
Family
Order
Species
Class
22
Which is the most efficient surface area to volume ratio?
20:1
1:2
17:2
2:1
23
What is negative feedback?
Works in the opposite direction
The response enhances the original stimulus
Works in the same direction
The response reduces the effect of the original stimulus
24
Active transport
Requires specific protein carrier molecules
Moves substances along their concentration gradient
Does not require energy
Allows small particles to cross membranes
25
This digestive tract belongs to a
Non-ruminant
Foregut fermenter
Hindgut fermenter
Ruminant
26
The plasma membrane
Does not contain glycoproteins
Does not contain glycolipids
Allows certain substances to enter the cell
Is made of a single layer
27
Which of the following is not true about prokaryotic cells?
May have small rings of DNA called plasmids
Are small in size
Have membrane bound organelles
Do not have a distinct nucleus
28
What is next? CELLS, TISSUES......
Veins
Organisms
Organ
System
29
Which factor will increase the rate of transpiration?
Low temperature
Small surface area
Low humidity
High humidity
30
What processes occur in humans when they are too hot?
Sweating
Panting
Vasoconstriction
Vasodilation
31
Binomical classification involves the
Kingdom
Genus
Class
Species
32
The first R in SRTER stands for
Receiver
Receptor
Response
Reaction
