Answer:
I think the answer should be the option A , hope this will help you !
Which age structure diagram shows that the number of individuals decreases
steadily with age?
Slow Growth
Negative Growth
Stable Growth
Rapid Growth
Answer:
Slow Growth
Explanation:
The age structure diagram is a method of understanding the population. It is used by the demographers to estimate the growth, fall, or change in the population of an area. The data required is the distribution of the age and the sex of an area. When the diagram is constructed and made into a pyramidal shape, it represents that there is a rise in the population of the area. a stable population can be estimated by there is straight up and down. The rapid growth model represents a rapid decrease in the population with age. The slow growth model represents a steady decrease in the population with age
which type of half-cell, when used along with a mn/mn2+ half-cell, gives the largest cell potential?
Answer: the options are not given, here are the options.
A. Cu2+/cu
b. Pb2+/Pb
c. Zn²+Izn
d. The potential for all three cells is the same.
The correct answer is A.
Cu2+/cu
Explanation:
A voltaic or galvanic cell is a cell that uses electrochemical energy generate from oxidation reduction reaction to produce electricity.
In this reaction manganese will be the anode and the Copper will be the cathode.
The half-cell reactions are given below and their respective cell potential.
Mn +Mn2+ + 2e- E°=-1.18v
Zn +2e=Zn E°=-0.76v
Pb+ +2r= Pb E° -0.13
Cu2+ + 2e= Cu E° 0.34
In solving the potential of the cell
E°cell= E° cathode -E°anode
For Mn and Cu.
(
s
)
+
Z
n
2
+
(
a
q
)
→
M
n
2
+
(
a
q
)
+
Z
n
(
s
)
E
∘
c
e
l
l
=
−
0.76
V
−
(
−
1.18
V
)
=
0.42
V
For Mn and Pb,
M
n
(
s
)
+
P
b
2
+
(
a
q
)
→
M
n
2
+
(
a
q
)
+
P
b
(
s
)
E
∘
c
e
l
l
=
−
0.13
V
−
(
−
1.18
V
)
=
1.05
V
For Mn and Cu,
0.34-(-1.18) = 1.52V.
Which happens to be the largest among the others.
Which of the following describes the order of events in which bone fractures heal?
A. A hematoma form -- a fibrocartilage Callus forms -- a bony calus forms -- bone remodeling occurs.
B. A bony callus forms a -- hematoma form -- a fibrocartilage calls forms -- bone remodeling occurs.
C. A hematoma forms a bony callus forms -- afbrocartilage calls forms -- bone remodeling occurs.
D. A fibrocartilage Callus forms -- a hematoma forms -- bone remodeling occurs -- a bony calls forms.
The order of events in which bone fractures heal is as follow A hematoma form -- a fibrocartilage Callus forms -- a bony callus forms -- bone remodeling occurs.
What is bone healing process?The bone healing process has 03 stages:
Inflammation, Bone formation and Bone remodeling.Inflammation starts instantly after fractured and lasts for few days.
Thus, option "A" is correct.
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Which of the following separates the DNA strands during replication?
A) Helicase
B) DNA polymerase III
C) Ligase
D) DNA polymerase I
E) Primase
Answer:
A. Helicase
Explanation:
Two replication forks are formed by the opening of the double-stranded DNA at the origin, and helicase separates the DNA strands, which are coated by single-stranded binding proteins to keep the strands separated. DNA replication occurs in both directions
The occurrence of discarded fishing gear still catching or entangling fish is known as
A. lost fishing
B. bycatch
C. overfishing
D. ghost fishing
Answer:
D. ghost fishing
Explanation:
The nets are also called "ghost nets" being left behind or lost in the ocean by fishermen.
Also, never leave nets in the water. Our Earth needs healing.
Fill in the blank.
1. The buildup of sediment where a river empties into a slow-moving or non-moving body of water is known as a/an _______.
2. A type of soil made almost entirely of windblown sediment is called _______.
3. The _______ in soil comes from decaying plants and animals and their waste products.
4. _______, which is made up of tiny particles and drains water very poorly, is one of the main components of soil.
5. A type of soil called peat is most likely to form in a/an _______.
6. Water helps in the development of soil by carrying _______ and nutrients from upper layers to lower layers.
7. The _______ of nutrients from soil is common in wet environments, like rain forests.
8. Quartz-rich parent material leads to the development of _______ soils.
9. The layers of soil composed mainly of organic matter are known as the ______ and _______ horizon.
10. A layer of soil in which clay, iron, and other elements from the overlying soil accumulates is known as the _______ horizon, or subsoil.
Answer:
1. River Delta
2. Loess
3. organic matter
4. clay
5. Coastal environment in Tropical setting.
6. minerals
7. richness
8. sandy
9. o and a
10. b
Explanation:
1. River Delta, 2. Loess and 3. organic matter, 4. clay and 5. Coastal environment in Tropical setting, 6. minerals and 7. richness and 8. sandy.
What is River sediment?The physical habitat of river ecosystems is controlled by sediment. The shape of river channels and the habitat of rivers are affected by changes in the quantity and spatial distribution of various sediment types.
Water clarity is based on the quantity and kind of silt suspended in the water column.
It is essential to comprehend and manage sediment and sediment-related habitat in rivers in order to understand sediment transport and the circumstances under which sediment is deposited or eroded from the diverse ecosystems in a river.
Therefore, 1. River Delta, 2. Loess and 3. organic matter, 4. clay and 5. Coastal environment in Tropical setting, 6. minerals and 7. richness and 8. sandy.
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Which type of macromolecule is a Product of photosynthesis 
Answer:
Glucose
Explanation:
Glucose is the macromolecule that is a product of photosynthesis.
In photosynthesis, the macromolecule glucose is made from solar energy, water, and carbon dioxide.
Answer: glucose
Explanation:
You plate colonies of E. coli with the lac operon genotype of I-P+O+Z+CAP+ on 1) a medium containing only glucose, and 2) a medium containing only lactose. You isolate mRNA from bacteria from each medium and do a Northern blot with a probe for β-galactosidase. Draw the results.
A complete collection of single-use and high-throughput electrocompetent and chemically competent E. coli
Choosing the ideal competent cells for your cloning applications and workflows is a critical component of success. Aspects to consider when selecting your competent E. coli strain include:
Transfection method – chemical versus electroporation
Transformation efficiency – bacterial strain and genotype
Downstream application – protein expression, library production, general cloning
sulfur is found in: lipids, proteins, sugars or DNA?
Sulfur can be found in proteins.
Diffusion is the movement of molecules across the cell membrane from __________ to __________ concentration. A low, high B high, low C high, equal D equal, low
Answer:
B; high, low
Explanation:
Diffusion is the movement of molecules across the cell membrane from higher to lower concentration.
i hope this helps:)
is Giardia viruses DNA or RNA viruses?
Mrs ogrady wants to know if doing labs with her
Answer:
O'Grady wants to know if doing labs with her science class really helps them learn the material better. She decides to test this out in her two 6th grade science classes. In both classes she gives the same amount and type of notes and homework, but in one class she does labs and the other class she doesn't.
How many openings does a liver fluke has
Answer:
there are 7 fluke in the liver
Answer:
12 I think but i'm really sure about it
What can we say about Gamma waves on
the electromagnetic spectrum?
A. They have the shortest wavelengths and the lowest
frequency
B. They have the longest wavelengths and lowest
frequency.
C. They have the shortest wavelengths and highest
frequency
D. They have the longest wavelengths and the highest
frequency
Briefly define and explain the differences between nature and nurture (GENERAL PSYCHOLOGY QUESTION BTW !!!!!!). please list up to at least 4-5 sentences
Answer:
In the"nature vs nurture" debate, nurture refers to personal experiences (i.e. empiricism or behaviorism). Nature is your genes. The physical and personality traits determined by your genes stay the same irrespective of where you were born and raised. Nurture refers to your childhood, or how you were brought up.
How do organisms carry out the chemical reactions needed for life?
Group of answer choices
Evolving
Homeostasis
Responding to stimuli
Metabolism
Which of these characteristics is shared by all living things
Answer:
Cellular organization.
Reproduction.
Metabolism.
Homeostasis.
Heredity.
Response to stimuli.
Growth and development.
Adaptation through evolution.
Explanation:
Which climate below is warm all year with a dry summer and associated with a sea?
Arid
Highland
Humid Subtropical
Mediterranean
what effect does insulin have on the body
Answer:
Insulin is a hormone made by the pancreas that allows your body to use sugar (glucose) from carbohydrates in the food that you eat for energy or to store glucose for future use. Insulin helps keeps your blood sugar level from getting too high (hyperglycemia) or too low (hypoglycemia).
Answer:
The liver converts any excess glucose in the body that reaches it after a meal to glycogen. This process is stimulated by the hormone insulin which is secreted by the pancreas. Thank you for the question
A student is measuring the volumes of nectar produced by a flowering plant
for an experiment. He measures nectar from 50 flowers using a graduated
nder that measures to the nearest militer (ml) Which statement
describes a change that could help improve the results of his experiment?
A His measurements will be more accurate if he takes
measurements from an additional 100 flowers
B His measurements will be more precise if he uses a graduated
yinder that measures to the nearest tenth of a ml
His measurements will be more precise if he takes measurements
from an additional 100 flowers
His measurements will be more accurate if he uses a graduated
inder that measures to the nearest tenth of a ml
Answer:
b
Explanation:
A student is measuring the volumes of nectar produced by a flowering plant for an experiment. His measurements will be more precise if he uses a graduated yinder that measures to the nearest tenth of a ml. Thus option B is correct.
what is an experiment ?The experiment is to do test the hypothesis and basic foundation of the scientific method, the different steps include Make observations, form a hypothesis, design experiment, evaluation of result, accept or reject the hypothesis.
variable is an important parameter which are included in an experiment like dependent, independent and controlled variables; An independent variable can not be influenced by other variable factor.
The dependent variable depend on other types of variable where as Control variable is constant variable in an experiment can use to prevent bias of experiment.
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The light dependent stage of photosynthesis uses chemical bond energy to make glucose and other carbohydrates. Select one: True False
Which of the following contains thousands of nuclei in a single "supercell?"
a.Plasmodial slime mold
b."The plasmodial slime mold Physarum polycephalum (featured in the end-of-chapter
Answer:
The correct answer is option a. "Plasmodial slime mold".
Explanation:
Plasmodial slime molds, are comprised of a single "supercell" with thousands or millions of nuclei within it. These organisms are formed by the fusion of multiple flagellated cells. The formation of these single celled organisms depend on the presence of enough food source. Typically, plasmodial slime molds have a diameter of 3 to 4 centimeters, but they can growth up to 30 centimeters.
Most persons who have prediabetes are aware of the condition and maintain normal blood glucose levels. true or false
The mechanism that accounts for high frequencies of sickle cell hemoglobin in malarial environments is:
Answer:
Selection -Selective advantage
Explanation:
Sickle cell hemoglobin result from the sickle shape of red blood cell instead of the ameboid shaped cell.
Malaria is a deadly disease that result from mosquito bites.
Sickle cell hemoglobin has a selective advantage because of the presence of AS genotype, the s allele in a sickle cell is an harmful recessive allele that remains in the gene pool it becomes expressed when the s allele is expressed in SS form after an AS individual have mated with either an AS or SS individual.
AS genotype has a high resistance against malaria, they have the ability to thrive making the allele s that is recessive for sickle cell thrive well in the environment of malaria in an AS individual.
Which statement describes prey? They provide energy for dead organisms. They are killed by predators for energy. They obtain energy from dead organisms. They obtain energy from predators.
Answer:
the answer is B
Explanation:
The statement that describes prey is they are killed by predators for energy. The correct option is b.
What are prey and predator?Predators are often carnivorous creatures that hunt smaller animals for food. Predators hunt, capture, and eat the animals that make up their prey. When there are more predators in a particular environment, there will be less prey overall.
Predators lose population when they move to new locations in search of food, which increases the population of prey in the area from which they migrated. In other words, a cycle of events starting with a decrease in prey and ending with an increase in prey results from an increase in predators.
Therefore, the correct option is b, They are killed by predators for energy regarding the statement that describes prey.
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A species has homologous chromosomes what does this say about the species
Answer:DIPLOID SPECIE.
Explanation:Having homologous chromosomes indicates that the organism is a DIPLOID SPECIE.
Answer:
A species that has homologous chromosomes is known as a diploid species. Homologous chromosomes are chromosomes that come in identical pairs.Hope this helps :)Which of the following is not a part of the cell theory based on the observations and conclusions of Virchow? A) Cells come from cells. B) Cells contain tiny organelles. C) Cells are the basic units of life. D) Organisms are made of cells.
Answer:
A) cells come from cells.
Is not a part of cell theory based on the observations and conclusion of virchow.Which of the following is an efferent neuron that is responsible for releasing a neurotransmitter that stimulates a muscle cell to contract?
a) Motor neuron
b) Sensory neuron
c) Interneuron
d) Neuroglia
Answer:
A. Motor Neuron
Explanation:
Motor neurons which can also be referred to as the lower/alpha motor neurons, furnishes skeletal muscle and causes the muscle to contract, this thereafter generates movement. Motor neurons releases neurotransmitter acetylcholine at the neuromuscular junction that stimulates muscle cells to contract.
At the point when the acetylcholine ties to acetylcholine receptors on the muscle fiber, an activity potential is proliferated along the muscle fiber in the two ways. The activity potential triggers the contraction of the muscle. On the off chance that the end of the muscle are fixed, keeping the muscle at a similar length, at that point the compression results on an expanded power on the backings which is referred to as isometric contraction. On the off chance that the muscle abbreviates against no obstruction, the constriction brings about steady power which is referred to as isotonic contraction. The engine neurons that control appendage and body developments are situated in the front horn of the spinal line, and the engine neurons that control head and facial developments are situated in the engine cores of the brainstem. Despite the fact that the engine framework is made out of various kinds of neurons dispersed all through the CNS, the engine neuron is the main manner by which the engine framework can speak with the muscles.
Ultimately, every movements will rely on the activity of the alpha motor neurons.
How is carbon dioxide released into the atmosphere during the carbon cycle
Answer:
Each time you exhale, you are releasing carbon dioxide gas (CO2) into the atmosphere. Animals and plants need to get rid of carbon dioxide gas through a process called respiration. Carbon moves from fossil fuels to the atmosphere when fuels are burned. The carbon is dissolved into the water.
Explanation:
What is an example of how organic molecules play a role in the structure and function of different cell types
Answer:
For example, the sugars can be linked to form polysaccharides such as starch and glycogen, the amino acids can be linked to form proteins, the nucleotides can be linked to form the DNA (deoxyribonucleic acid) and RNA (ribonucleic acid) of chromosomes, and the fatty acids can be linked to form the lipids of all cell
Explanation:
Organic molecules play a significant role in the structure and function of different cell types. For example, nucleic acid looks after the construction of genetic material among living organisms.
What are organic molecules?Organic molecules may be defined as all sorts of those molecules that primarily consist of carbon and hydrogen. It also includes other elements like oxygen, nitrogen, phosphorus, etc. Organic molecules must possess carbon atoms covalently bonded to hydrogen atoms (C-H bonds).
Among organic molecules, carbohydrates are the energy-deriving components that all cells require in order to perform their own cellular and metabolic activity.
Proteins are required for the structural arrangement and specific function of each cell type. It also functions as a hormone or enzyme. Lipids also store the energy needed for the body.
Therefore, organic molecules play a significant role in the structure and function of different cell types.
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