Question 19 (5 points)
In the gaseous state _form diatomic covalent molecules.
noble gases
alkali metals
alkaline earth metals
halogens

Answer:A

Explanation:

Answer:

Cytokinins promote cell division and are produced in growing areas of plants.

ethylene is a gas that is produced by ripening fruits.

the answer is TRUE

Answer:

C. Tap root system

Explanation:

The taproot is the primary root that is derived from the radicle directly. This primary root has many lateral roots originating from it. Root vegetables such as carrots are classified as tap roots.

These root vegetables are fleshy in nature. The taproot of carrot is modified to store the food. Storage of food makes the tap roots of these vegetable swollen in appearance. Another example of root vegetable is turnip which is also a taproot.

Answer:

Tap root

Explanation:

Penn foster

Answer: Option D

Explanation:

The fat which is found inside the body helps in providing insulation to the body form the outer environment. It also serves many important functions in the body such as protection from cold by providing heat to the body.

The fat is also found in the myelin sheath of the neurons. This helps in saving the energy which is transmitted from one neurons to another neuron.

It provides a long route for signal transmission without wasting energy by providing insulation.

Hence, the correct answer is option D

Fats are essential in the human diet as they help in the formation of the insulating layer around nerve cells, promoting efficient transmission of signals across neurons.

It is vital for humans to consume fats in moderation because they play fundamental roles in the body. The correct answer to the question is option D: Fat helps nerves transmit signals. This is because fats participate in forming the myelin sheath, a fatty insulating layer protecting our neurons (nerve cells) and aiding in the swift and efficient transmission of signals in our nervous system. Without enough fat in our diet to facilitate this, our neurological health might be compromised.

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Answer: Pseudoscience such as astrology are almost untestable and have no basis in science. Science must follow the scientific method.

step one- Construct a Hypothesis

step two- test that hypothesis

step three- analyze your findings and draw a conclusion.

step four- communicate your findings

So the correct answer C.

Hope this helps!

Answer:

B. Deposition Gain

Explanation:

Answer:

When a patient’s kidneys failed, he wondered if it would be possible to perform kidney functions with an external machine.

Explanation:

The scientific process always begins with a hypothesis. The whole process will be dedicated to testing the hypothesis, whether it validates or invalidates it. The next step is to do more research about it to find relevant literature or researches that will help the overall design of the process or investigation. Only then will they proceed to methods into how to conduct the investigation or how to start designing a prototype. After this, is data gathering through testing. When data is gathered, it would be analyzed then a conclusion will be drawn.

Here is your scenario in the correct order from start to end.

1. When a patient’s kidneys failed, he wondered if it would be possible to perform kidney functions with an external machine.

2. He researched and collected data about numerous patients who exhibited symptoms of kidney failure.

3. He drew conclusions from studies of various symptoms of kidney failure, and drew a design for the ideal external blood-processing machine.

4. He built the machine and tried it with various patients, collecting data about its effectiveness.

Answer:

B.

Explanation:

Hello. This question is incomplete. The full question is:

"Identify the product of genetic engineering. :

inserting a spider’s silk gene in a goat’s DNA to weave silk threads

choosing livestock for mating to pass on their genes for being large to offspring

intentionally pollinating two strawberry plants that produced sweet berries

fishing for large fish, leaving small fish to pass on their genes to offspring"

Answer:

inserting a spiders silk gene in a goats DNA to weave silk threads

Explanation:

Genetic engineering is the branch of science that manages to gather several techniques for the purpose of manipulating the genes of any organism from artificial experiments. This manipulation process causes such elements to be duplicated, transferred or even isolated from the original genes. With this, the objective is to produce beings with improved genetics to improve functions or even produce some substances that can bring benefits to man. An example of the use of genetic engineering occurs when a scientist wants to insert a spider's silk gene into a goat's DNA to weave silk threads

Genetic engineering involves altering an organism's genotype to achieve desirable traits, such as creating Roundup-ready soybeans and human insulin through genetic modification.

Genetic engineering involves the alteration of an organism's genotype using recombinant DNA technology to achieve desirable traits. One key product of genetic engineering is the creation of Roundup-ready soybeans, which are genetically modified to be resistant to the herbicide Roundup. Another important product is human insulin, which is biosynthesized by genetically engineered microorganisms.

Answer:

comparatively cooler

Explanation:

The land areas and water bodies get heated during the summer due to the increasing amount of incoming solar radiation. The water bodies like oceans, seas, and rivers take more time to heat as they can reflect some amount of radiation back to the atmosphere and also it takes a lot of time to cool.

In the case of areas near a lake and away from the lake, the areas near the lake will be comparatively cooler than the areas that are away from the lake. It is because the water in the lake is quite less in comparison to the ocean bodies, so the water will be heated at a faster rate and it will reflect some amount of light also, thereby the places will be cold less warm.

But away from the lake, the areas will absorb more heat as it cannot reflect the solar radiation back into the atmosphere. So these places will be warmer.

Hence, the areas near the lake will be cooler than the areas away from the lake.

Answer:

Feeding, reproduction, respiration and excretion.

Characteristic features of Flea, Bacteria and Elm tree

Flea:

1. Flea is small and wingless insects.

2. It survives as parasite on the body of mammals and animals.

3. It acts as carriers of many disease.

4. It gets its nourishment from the blood.

Bacteria:

1. It is a single celled prokaryotic organism.

2. It is both harmful as well as beneficial to the other living organism.

3. It is a member of decomposer.

4. They are microscopic in appearance.

Elm tree:

1. It is a deciduous tree.

2. It is life span is approximately 300 years.

3. It is native to central Asia.

4. It act as source of food for various living organisms.

antiacids- acid in stomach

anticoagulants- reduces blood clots

antiemetics- prevent vomiting

Species B is the most similar to the original moth due to its lack of differences in DNA. We know that 12, 14, and 28 are all greater than 3 (and represent the amount of genetic differences), which makes B the only one with a high quantity of similarities.

I hope I helped!

Species B is the most similar to the original moth species and is denoted as option B.

This is known as deoxyribonucleic acid and contains the genetic components of an organism.

The lack of differences in DNA is what makes species B the only one with a high quantity of similarities.

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Answer:

GGAUC

Explanation:

C pairs with G

T pairs with A

A pairs with U

G pairs with C

CCTAG -> GGAUC

Answer:

B. The occipital lobe

Explanation:

The brain receives signal or information for vision through one of the five senses, the eyes. The brain processes the visual information in the occipital lobes of the cerebrum. The occipital lobes are one of the four main lobes of the cerebral cortex. The eyes transmit this information to the visual cortex. The visual cortex takes processes the information so, we are able to see the things.

Answer:

The double-helix structure of DNA: Watson, Crick, Franklin

The chemical composition of proteins: Mulder  

The monomer of nucleic acids: Levene  

Answer:

The primitive earth has  reducing atmosphere with little or no oxygen.

Explanation:

According to several theories, the early atmosphere of the earth was reducing in nature. It had little or no oxygen and was rich in carbon dioxide gas. The atmosphere of primitive earth had water in the form of water vapor. It also had gases like ammonia and methane. Oxygen was added to the atmosphere of earth by first oxygenic photosynthesizing organisms (cyanobacteria) later.

Final answer:

Damage to the plant's meristems, specifically the roots, is likely the cause of its inability to grow and produce new root cells. The roots are key for absorbing water and nutrients, and when they are damaged, the plant may not be able to survive due to restricted resource uptake.

Explanation:

When a plant can no longer grow or produce new root cells, it is likely that the meristems, particularly the root meristems or root apical meristems, suffered damage during the natural disaster. Meristems are regions in the plant where cells are capable of dividing and differentiating into various types of plant cells. If root meristems are damaged, the plant cannot produce new root tissue, which affects its ability to absorb water and nutrients from the soil. This can lead to the entire or major portion of the plant dying because the roots are essential for plant survival, anchoring the plant in the soil and facilitating the uptake of vital resources.

Generally, damage to the roots can come from various factors such as extreme temperatures, physical trauma, or chemical exposure. Cold damage to the root system, for example, can blacken or spongify roots and prevent new growth, which becomes evident by restricted water and nutrient uptake, leading to symptoms such as defoliation or small leaf size.

Answer:

A. Lightning

Explanation:

Nitrogen is very fundamental for a wide range of life activities in both plant and animals.

Lightning which accompanies thunder during rain storm and other weather phenomenon aids the release of atmospheric nitrogen for life processes. The energy that accompanies a lightning event is mostly electrical in nature. This electrical energy is huge and very massive. As the lightning interacts with free nitrogen molecules in the atmosphere, the molecule is broken down. The free nitrogen which results then combines with oxygen in the atmossphere to form oxides of nitrogen. When oxides of non-metals dissolves in rain water, they make the water rich in nitric acid and can be brought to the biosphere for use by plant and animals.

A sample of a population should be large enough to span the full spectrum of a population's genetic variation (Option C).

In science, a sample is a representative part of the population that is tested during the experimental procedure.

In conclusion, a sample of a population should be large enough to span the full spectrum of a population's genetic variation (Option C).

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Answer:

B. Dependent variable

Explanation:

Answer:

A. Validity group

Explanation:

An experiment is a type of scientific research in which the researcher manipulates and controls one or more independent variables and observes the variation in the dependent variables concomitantly with the manipulation of the independent variables.

An experiment is composed of variables and groups. In the variables, you can mention:

In a scientific experiment, besides the variables we can notice the presence of groups (two samples) that are compared to test a hypothesis: the control group (also called test group or testimony) and the experimental group.

Answer: DNA source apex

Explanation:

DNA

period okurrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr

Answer:

in the same direction as the wind blows

Explanation:

The dunes are hills formed by grains of sand held together by the action of wind or water. Over time, as sand dunes tend to migrate in the same direction as the wind blows.

They have a larger side that is eroded (windward) and a smaller, steeper side (leeward) where deposition of eroded material occurs. Through this mechanism of erosion and deposition the dunes are considered highly dynamic, "moving" over time.

Answer:

13 were born and 7 died.

The difference is: 13 - 7 = 6

The answer would be B. an increase of 6 per 1000 people.

Answer:

B. An increase of 6 per 1000 people

Explanation:

Birth rate of a population is the total live births that takes place per 1000 people in a population in a year. Death rate of a population is the total number of deaths that occur per 1000 people in a population.

A difference between the birth rate and death rate gives the growth rate of a population. Growth rate gives the number by which the population is increasing or decreasing. Here, the birthrate was 13 per 1000 people and death rate was 7 per 1000 people. So the net growth rate was an increase of 6 per 1000 people.

A. Plugging in the electrical cord with dry hands

C. Checking the glass slides and cover slips for chips prior to making a wet mount

D. Switching to high power after focusing under low power

E. Carrying the microscope with both hands

A. Plugging in the electrical cord with dry hands to avoid electric shock.

A laboratory poses potential risks due to exposure to corrosive and toxic materials, flammable solvents, high pressure gases, explosive chemicals and dangerous microbes. A little care and adherence to prescribed safety guidelines will help avoid laboratory mishaps.

C. Checking the glass slides and cover slips for chips prior to making a wet mount to view clear structures.

D. Switching to high power after focusing under low power in the microscope for better reading.

E. Carrying the microscope with both hands which avoid breakage.

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Juan likely found archaea in the hot springs of Yellowstone National Park, specifically prokaryotes that are adapted to extreme environments such as highly saline, acidic, or hot conditions.

Juan came across organisms thriving in the hot springs of Yellowstone National Park, which are known for their extreme environments. These organisms he found lack a nucleus or defined organelles, indicating that they are prokaryotes. Among the types of prokaryotes, one group particularly adapted to such environments are the archaea.

Unlike bacteria, fungi, and viruses, archaea are well-known for living in extreme conditions such as highly saline, acidic, or hot environments, like the Morning Glory pool. These extremophiles often have unique adaptations that enable them to thrive where few other life forms can survive.

Answer:

The correct answer is option 4. Z

Explanation:

Given diagram representing a different level of organization where W showing organ which is the third smallest organization made up of different tissues.

X showing an excretory system that consists of several organs.  

Y exhibits a cell that is the smallest organization in the human body.  

Z is a tissue that is made up of cells joined collectively and the second smallest level of organization in the human body.

Thus, the correct answer is option 4. Z

Answer:

its Z

Explanation:

Answer:

D. Wilt and die

Explanation:

A plant that loses to much 4 from its cells will eventually wilt and die.

This is because plants needed water to live and let photosynthesis take place.

Hello There!

A plant that loses too much water from its cells will eventually "WILT AND DIE"

A plant needs the water in its cells to survive. If this does not happen, the plant will slowly die.

Final answer:

Statements that goals are mostly for learning and that achieving them signifies maturity are not true. Goals have various purposes, and maturity is a complex trait. SMART goal setting is crucial for effectiveness.

Explanation:

The statements about goals that are not true are that 'Goals are mostly for the purpose of learning' and 'Accomplishing goals means you are mature.' While learning can be a byproduct of achieving goals, goals encompass a broad range of purposes including personal, financial, and professional ambitions. Additionally, the maturity of an individual is not solely determined by their ability to accomplish goals since many complex factors affect both goal attainment and maturity.

Setting SMART goals is important for clarity and effective goal attainment. These goals should be Specific, Measurable, Achievable, Relevant, and Time-bound. To make goals measurable, you should determine the criteria to track progress and establish how you'll know when the goal is accomplished. Moreover, breaking down your goals into feasible action steps with target dates can greatly increase your odds of success.

Societal views on adulthood milestones may differ, but completing goals within personal and professional domains remains key to individual development. However, the completion of certain milestones does not define adulthood or maturity in its entirety.

Final answer:

Not all goals are primarily for learning as they can also be for other purposes, and accomplishing goals is not necessarily a sign of maturity. Goals should be set using the S.M.A.R.T. framework to be measurable and attainable.

Explanation:

The statements about goals that are not true include: 'Goals are mostly for the purpose of learning' and 'Accomplishing goals means you are mature.'

Goals can indeed be for the purpose of learning, which are known as mastery goals, but they can also be for other purposes such as performance or career advancement. While mastery goals focus on acquiring knowledge and self-development, performance goals are often about demonstrating competence to others or achieving a certain grade or accolade. Furthermore, mastery goals are associated with a deeper engagement and sustained interest in the learning material.

Accomplishing goals does not necessarily equate to maturity. Completing a goal is an achievement, but maturity is a broader concept related to one's ability to handle complexities, understand different viewpoints, and demonstrate responsibility in multiple aspects of life.

Measurable goals are an important aspect of the goal-setting process. A goal should be specific and have criteria for measuring progress, which provides a clear indication of success once the objective is achieved. The S.M.A.R.T. framework is often used to define goals that are Specific, Measurable, Achievable, Realistic, and Time-targeted. This structure helps in planning and tracking the progress towards attaining the goal.

Answer:

Blowfly

Explanation:

Answer:

Chloroplasts

Explanation:

Chloroplasts are the double membrane-bound organelles that are mostly present in leaves of the plants. Chloroplasts have chlorophyll pigments in their thylakoid membranes and enzymes for the Calvin cycle in the stroma.

Presence of chlorophyll pigment allows the Chloroplasts to serves as a site for photosynthesis as these pigments trap the sunlight required for the process.  

Photosynthesis primarily takes place in the chloroplasts within the mesophyll layer of leaves, where the pigment chlorophyll in thylakoid structures captures light energy. Gaseous exchange required for photosynthesis is regulated by stomata and guard cells on the leaf surface.

The site of photosynthesis within a plant is the chloroplast, which is primarily located in the mesophyll layer of leaves. These chloroplasts contain disc-shaped structures known as thylakoids, which are grouped into stacks called grana. The thylakoids house the green pigment chlorophyll, which is essential for capturing light energy during the process of photosynthesis. Other plant parts like stems can also be photosynthetic, but the bulk of photosynthesis tends to occur in the leaves due to their specialized structure that facilitates water and air movement.

Gaseous exchange, important for the photosynthetic process, occurs through the stomata (singular: stoma) found mainly on the underside of the leaf. Each stoma is accompanied by guard cells, which regulate the opening and closing to balance gas exchange and water loss. This regulation is crucial to maintain homeostasis within the plant while it carries out photosynthesis.