Answer:
1 and 3
Explanation:
im not sure but I guess it's species 1 and 3
Which items are part of the Arctic tundra ecological community?
The organized set of rules to sign names to chemical compounds is alles
A Binary compounds
B. Elemental nomendaure
C. Chemical nomendature
D. Stock system
Answer:
B. chemical nomenclature is your answer
Use Figure 12.1 and the information here to answer the following questions. The unlettered circle shows a diploid nucleus with four chromosomes. There are two pairs of homologous chromosomes, one long and the other short. One haploid set is symbolized as black and the other haploid set is gray. The chromosomes in the unlettered circle have not yet replicated. Choose the correct chromosomal conditions for the following stages.
Which process formed the cell at A?
a.) meiosis I
b.) meiosis II
c.) anaphase
d.) mitosis
Answer:
If I am not wrong then the correct answer from my thinking is c.anaphase
Which of the following is an organism whose cells each contain a membrane
bound nucleus?
Answer:
D. Eukaryote
Explanation:
An organism that has membrane-bound organelles will have more complex organelles like mitochondria, Golgi apparatus, and ER. These are known as Eukaryotes. Additionally, they will have a nucleus that has the DNA coiled inside. Prokaryotes do not have membrane-bound organelle and the DNA floats in the cytoplasm. Most plants and animals are eukaryotes and all multicellular organisms are too.
Question 3(Multiple Choice Worth 4 points)
What processes can increase the genetic diversity of bacteria and other prokaryotes?
O Conjugation, transduction, and mutations
O Conjugation, meiosis, and cloning
O Binary fission, mitosis, and cloning
O Binary fission, meiosis, and mutations
Answer:
Conjugation, transduction and mutations.........
What is marine habitat and its characteristics
Refer to the attachment
Hope it helps you
Which of the following is an example of a density-independent limiting factor?
Select one:
O a. a decrease in prey
b. a food shortage
O c. a natural disaster
d. a parasite
Answer:
c. a natural disaster
Explanation:
A limiting factor in an ecosystem can either be density dependent or density independent. A density independent limiting factor is that which does not rely on the density of a population to affect it's size.
A density independent factor affects the population size irrespective of how densely populated the population is. Examples of density independent limiting factors that can affect a population are natural disasters like fire outbreak, hurricane, earthquake etc.
What is the reason that a water molecule is polar?
it is neutral
it is an ion
the hydrogens lose their electrons to the environment
the electrons are unequally distributed among the atoms
Previous
Answer:
C) hydrogens lose their electrons to the environment.
Explanation:
I think
Why is it helpful that fungi attack and kill other parasitic organisms?
Answer:
it benefits the thing or area it lives on?
When killing other parasitic organisms, that parasite is no longer feeding on it's host.
explain why the roots of a plant grow in all directions if there is no gravity
Answer:
Roots apparently don't need gravity to place their directional skewing. They will grow away from a light source but of gravitational forces. Although plants on Earth do use gravity to help determine their direction of growth, it is clear that gravity is neither essential for root positioning nor the only factor controlling root growth patterns. In order to get water and other essential nutrients, the roots of plants grow in all directions if there's no gravity.
macromolecules are made up of
A- chromatin
B-organelles
c-polymers
d-monomers
Explanation:
D. monomers
I hope this helps
Which of the following substitutions can help reduce air pollution?
Which two formulas represent compounds?
O A. H2
O B. HCI
O C. Ag
O D. Naci
Answer:
B and D
A.its a gas not a compound
C.silver is an element
a compound is made up of two elements
please explain why the gastric glands secret pepsinogen and not pepsin
Answer:
The correct answer is - to protect the cells of these secretory glands from pepsin.
Explanation:
Pepsinogen is an inactive form of enzyme pepsin that is released by specific cells called chief cells within the gastric lining Releasing the inactive form of pepsin in preventing the auto-digestion of protective proteins and the cells of these secretory glands in the lining of the digestive tract.
Pepsinogen is activated by acidic pH to pepsin of the stomach lumen and the cell lining of the stomach is protected by mucus lining.
Which statement best provides evidence that the substance is a mutagen
Answer:
The cells change after being exposed to the chemical, and this change is passed to the next generation of cells.
D.F. is a 37-year-old woman who presents to the emergency department after having a seizure.
Data
PMH: Seizures, unknown type
Headache
Housewife
Feels weak
No loss of consciousnessObjective Data
Vital signs: T 37 P 72 R 18 BP 114/64
Lungs: clear all bases
O2 Sat = 100%
CV = heart rate regular, positive peripheral pulses
Required:
a. What other assessments are necessary for this patient?
b. What are some of the causes of seizures?
c. Develop a problem list from objective and subjective data.
Answer:
1. Other assessments are necessary to this patient on given information of the patients are :
- headache before or after seizures.
- if proper functioning in sensory organs for taste, smell, hear
- complete brain assessments
- questionnaire related to seizures.
- forget about the seizure episode
- EEG
- complete blood test
- head CT/ MRI scan
2. CAUSES OF SEIZURES
High blood pressure due to
Sudden electric activity in the brain
too high or low levels than usual of sodium or glucose in the brain
Infection in brain
brain tumor
cardiac disease
high fever
3. in this case seizure is not known, during seizure time headache is common but with a high grade when compared to the normal, mainly it starts before the seizure.
in seizure time some times complete loss of memory, systolic and diastolic blood pressure also increases, heart rate increases. then oxygen saturation less than 100%. in this case heart rate is regular .
Which statement best explains the process occurring in step 4 of the life cycle ?
Answer:
d (pls give brainliest)
Explanation:
How do impulses travel from one neuron to the next?
A. on the myelin sheath from one neuron to another
B. as an electrical impulse that travels down the axon of one neuron to another
C. by converting from a chemical signal to an electrical signal to travel across the synapse
Answer:
B. as an electrical impulse that travels down the axon of one neuron to another
Explanation:
what feature did terrestrial plants acquire in order to adapt to life on land to transport materials throughout their bodies
Answer:
they developed some structures or parts to survive
the terrestrial environment
Select the correct answer.
Which alignment of the Sun, Moon, and Earth causes a lunar eclipse?
Answer:
Observing a Lunar Eclipse
A lunar eclipse occurs when the Moon passes directly behind the Earth into its umbra (shadow). This can occur only when the Sun, Earth, and Moon are aligned exactly with the Earth in the middle. Hence, a lunar eclipse can only occur the full moon phase.
Explanation:
SANA NAKA TULONG☺️
Identify the two main gases that are exchanged between the respiratory
and circulatory systems.
Answer:
Oxygen and Carbon Dioxide
Explanation:
which stable element is used to determine the age of volcano rock
Counting three rings is an example of which type of dating
A. Radioactive
B. Correlative
C. Incremental
D. Varve
This is for Earth Science.
The answer is C: Incremental
A massive increase in the growth of a specific species of algae resulted in record-breaking levels of a potentially dangerous toxin being released into the water. A researcher hypothesizes that the unusual growth of this algal species was caused by an increase in water temperature. The researcher designs an experiment to test the hypothesis. Which of the following is the dependent variable in the researcher's experiment?
a. The growth of the algae
b. The temperature of the water
c. The concentration of toxin in the water
d. The different species of algae growing in the water
Answer:
a. The growth of the algae
Explanation:
The researcher already knows that the over-growth of algae species results in excessive levels of a potentially dangerous toxin being released. But he/she wants to know what is causing this algae over-growth. The principal hypothesis is that the increase in water temperature is the cause of the unusual growth of this algal species. The researcher hypothesizes that the higher the temperature levels are, the more growth rate the algae will exhibit.
So in this experiment, the researcher can voluntarily modify the temperature in order to see how it changes the algae growth.
Before answering the question, let us remember a few concepts.
Independent (manipulated) variable refers to all the variables in an experiment that provoke a response in another variable. An independent variable is the one that changes or is controlled and modified in the experiment to analyze how another variable responds to it. It changes to analyze its effects on the dependent variable. Usually, the independent variable is represented by the X letter. The Dependent variable reacts to any modification of the independent variable. Any change in the manipulated variable provokes a proportional or inversely proportional change in the dependent variable. It represents the quantity of something, such as height, weight, length, rate, etc. It is usually identified by the letter Y.Now, let us analyze the options.
c. The concentration of toxin in the water. This is a dependent variable, which depends on the algae growth. The more algae present, the more toxins. However, this is not what the researcher is studying. He/She wants to know what is causing the increase in algae. So toxins, in this study, would be a secondary effect.
d. The different species of algae growing in the water . Probably this is also related to temperature and the biology of each algal species. However, the researcher is interested in a specific species of algae.
b. The temperature of the water. The temperature of THE water is directly involved in this experiment, but as the INDEPENDENT VARIABLE. The researcher will modify the temperature in order to know how it changes the algae growth. The researcher voluntarily modifies this variable, and this change provokes a change in the dependent variable.
a. The growth of the algae. The Growth of THE algae is the DEPENDENT VARIABLE. It CHANGES ACCORDING TO THE TEMPERATURE. So the change in the algae growth will depend on how the researcher modifies the temperature. We are referring to one specific algal species. This species is responsible for the toxins´ productions and is suggested to depend on temperature.
The most likely explanation for showing fewer organisms at each feeding level going up the
pyramid is that
1.
some energy is lost to the environment as heat
2.
the larger the organism, the less energy it requires
3
some energy is recycled within each level and remains there
4
decomposers convert most of the energy into inorganic compounds
Answer:
1.some energy is lost to the environment as heat
Answer:
Answer is 1
Explanation:
What name is given to a proposed explanation for a set of observations
Answer:
Hypothesis
Explanation:
An hypothesis is a proposed explanation for a set of observation.
A scientist helps a colleague do a better experiment by:
Answer:
Have a nice day
Explanation:
A scientist can help a colleague out by offering advice and telling the person how to best perform a standard procedure. This will help the colleague do better in the experiment and also help ensure that the right things are done and the efforts are successful.
what do i need to do if i want to master the genetics section
A eukaryotic mutation upstream of a particular gene has been identified that changes the sequence of the TATA box to GATA. How would you predict that this mutation would affect the transcription of this gene
Answer:
Transcription factor binding would be reduced or eliminated, and transcription of the gene would decrease dramatically.
Explanation:
Mutation means the changing of the structure of the gene that results in the variant form which may be transmitted to the subsequent generations. They are caused by the altering the the single base units in the DNA of the species.
In both eukaryotic as well as prokaryotic, the mutation can affect the diversity in the future generation of the cells.
The eukaryotic mutation of the gene affects the transcription of the gene as the transcription factor binding will be lowered or will be eliminated and the transcription of this gene will decrease.
Which characteristic distinguishes prokaryotes from all eukaryotes?
a. ribosomes
b. DNA
c. phospholipids in cell membranes
d. none, as both may share these features
e. cell wall
Answer:
c. phospholipids in cell membranes