WorksheetsBio Exam 4
Total questions: 25
Worksheet time: 25mins
A student is working out at the Gym. Which of the following explains what's happening in their muscles?
There is an increase in blood pH, decreasing hemoglobin saturation
There is an increase in carbon dioxide concentration, decreasing hemoglobin saturation
There is a decrease in carbon dioxide concentration, decreasing hemoglobin saturation
There is an increase in body temperature, increasing hemoglobin saturation
The ORS complex on an ECG shows which of the following?
Ventricular repolarization
Atrial contraction
Ventricular depolarization
Atrial depolarization
Ventricular contraction
Which of the following is FALSE about complete digestion?
Mechanical and chemical digestive processes occur at the same time and place
It has evolved later than the incomplete digestion
It allows animals to digest large pieces of food
Digestion proceeds from ingestion to waste elimination without interruption
Which structure receives oxygenated blood from the lungs?
Left ventricle
Right atrium
Right ventricle
Left atrium
Which structure can be characterized by the passive transport of
NaCI out of pre-urine?
Descending Loop of Henle
Proximal convoluted tubule
Collecting duct
Distal convoluted tubule
Ascending Loop of Henle
Which of the following are met when gas diffusion rate is highest?
1. Large surface area
2. Small diffusion barrier
3. Small partial pressure gradient
1 and 2
1, 2 and 3
1 and 3
2 and 3
Due to severe cold, your teeth begin chattering and you start to shiver. This is an example of temperature control in which way?
Insulation
Behavioral adaptation
Metabolic activity
Circulatory adaptation
You are interested in looking at some plant cells under a microscope.
You scrape the plant cells onto a microscope slide, then add a drop of solution. When you look at the cells, they look normal: exactly the shape you expect. Based on this, what kind of solution did you add?
Hypertonic
Isotonic
Hypotonic
Cannot tell with the given information
Which of the following statements is true with regards to the pressure flow model?
Xylem is under positive pressure
Sugars are only transported from leaves to roots all the time.
Sugar is actively transported from photosynthetic tissue into phloem
Water influx from the xylem into the phloem is consistent across the entirety of the phloem
Which of the following is FALSE?
True circulatory systems must have a muscular pump
In closed circulatory systems, blood is strictly confined to blood vessels
Open circulatory systems are more energetically efficient
Gas exchange is a necessary part in all circulatory systems
Which of the following is TRUE about Rhyzobia and mycorrhizal fungi?
Rhyzobia fixes inorganic nitrogen while mycorrhizal fungi obtain nitrogen from broken down proteins
Both Rhyzobia and mycorrhizal fungi can operate in oxygenated environments
zobia and mycorrhizal fungi both are plant parasites and need to be dealt with by farmers
Rhyzobia and mycorrhizal fungi both help in uptake of many other nutrients beside nitrogen.
You observe the body temperature of a new animal you found throughout the day and found that its body temperature increased throughout the day but decreased during night when it started to get colder out. What type of thermoregulator is it
Polytherm
Homeotherm
Heterotherm
Endotherm
Poikilotherm
What can you say about water movement if the water potential of the atmosphere is greater than the water potential of the soil?
That would kill the plant
Transpiration will still occur normally
Transpiration does not occur
Water moves out of the plant through its roots
None of the choices
Which of the following mechanisms is NOT correctly matched?
Phloem uses pressure to push the sap from the source, making the pressure positive
Xylem uses tension to pull fluids from the top, making the pressure potential negative
Phloem uses non-living vessel elements and tracheids for bulk flow
• Xylem's main driving force for fluid flow is transpiration from leaves
Why is sand not ideal for plant growth?
Lacks both water retention and nutrients
Lacks nutrients
Lacks water
Lacks oxygen
Low root penetration
Which of the following is correct about the Bohr Shift?
An increase in the body temperature increases 02 affinity of hemoglobin
A decrease in the pH decreases the 02 affinity of hemoglobin
Any environmental shift can increase or decrease the affinity of hemoglobin for 02
A decrease in the CO2 concentration increases the 02 affinity of hemoglobin
Which of the following nutrients do plants need only in trace amounts?
Phosphorous
Sodium
Potassium
Sulfur
Carbon
Which part of the soil is the most valuable for agriculture?
Sod
Bedrock
Parent rock
Subsoil:
Top soil
What key morphological feature do mammalian red blood cells have that white blood cells do not?
Antibodies
Mitochondria
Ribosomes
Hemoglobin
Nuclei
Which of the following is FALSE about soil bacteria?
Nitrogen-fixing bacteria convert atmospheric N2 gas into bio-available minerals for plants
Nitrogen-fixing bacteria use Rubisco enzyme to convert N2 into ammonia
Denitrifying bacteria convert nitrate to N2 gas
Nitrogen-fixing bacteria are required for the life as we know it on earth.
Nitrogen-fixing bacteria form mutualistic relationships with legumes
What mechanism would a plant that grows in a temperate climate use to tolerate flooding?
Apoptosis in root cortex cells
Reduced photosynthesis
Apoptosis in root cells and in leaves
Closing stomata
A plant carries out light reaction of the photosynthesis during the day. At night it's expending energy to trap carbon-containing molecules quickly so it does not lose water achieving temporal separation of light and dark reactions. Which kind of photosynthesis would the following plant most likely carry out?
None of the choices
C4
С3
CAM
You find a new species of animal while walkin§ through a desert.
What form of nitrogenous waste would that organism likely use?
Ammonia
Uric acid
Could be any of them
Urea
A plant is deficient in a particular nutrient. However, the new growth that is occurring is green and healthy. What does this tell us about the missing nutrient?
It is mobile
It is a macronutrient
It is water
• It is non-mobile
It is a micronutrient
Water is transported via
ーーー
in the limb ofithe loop of Henle.
Both active and passive transport, ascending and descending
• Passive transport, descending
Active transport, ascending
Passive transport, ascending
Active transport, descending
