When heating substances in a test tube, always

Answers

Answer 1

Answer:

point the open end of the tube away from all the people.


Related Questions

Identify the niche of the deer.

Answers

Answer:

White-tailed deer fill the niche, or role, in ecosystems of both herbivore and prey.

Answer:

The niche of a deer Is being the prey for predators and balancing the vegration in an ecosystem or in a certain area in that ecosystem.

Explantaion:

Hopefully this helps you :)

pls mark brainlest ;)

The functional connectivity is greatest for which pair of species?
Wood frogs and Spotted salamanders
O Black bears and wood frogs
O White-tailed deer and Pickerel frogs
O Spotted salamanders and Black bears
O Grizzly bears and White-tailed deer​

Answers

Answer:

White-tailed deer and Pickerel frogs

Explanation:

Diagram a motion graph of a bicycle that travels 80 meters in 16 seconds. What is the speed in meters/second?

Answers

Answer:

50

Explanation:

Why do people with diabetes have a hard time keeping a balance blood-glucose level? A)they don’t synthesize any insulin hormone, to help shuttle glucose into cells when there is a need. B)they don’t synthesize any hormone to keep their blood pressure in check

Answers

Answer:

A

Explanation:

i hope thia helps and sorry if yoy get it wrong! ^w^

People with diabetes have a hard time keeping a balance blood-glucose level because they don’t synthesize any insulin hormone, to help shuttle glucose into cells when there is a need. Thus, the correct option is A.

What is Diabetes?

Diabetes may be defined as a type of metabolic disease that is characterized by elevated levels of blood glucose (or blood sugar).

The body of individuals with this type of chronic disease does not regulate the amount of glucose (a type of sugar) in the blood and the kidneys construct a large amount of urine.

This whole abnormal circumstance takes place when the body does not synthesize enough insulin hormone that helps in the regulation of elevated blood glucose levels by transforming it into other forms such as glycogen.

Therefore, people with diabetes have a hard time keeping a balance blood-glucose level because they don’t synthesize any insulin hormone, to help shuttle glucose into cells when there is a need. Thus, the correct option is A.

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Write a short paragraph describing the role of all types of lipids

Answers

Lipid Biological Functions

-Chemical messengers.

-Storage and provision of energy.

-Maintenance of temperature.

-Membrane lipid layer formation.

-Cholesterol formation.

-Prostaglandin formation and role in inflammation.

When a liquid changes to a gas the process is called?

Answers

Answer:

Condensation

Explanation:

the word is called condensation

Match the following examples to the correct type of bone marking. a shallow depression in the back of the knee joint openings in the cervical vertebrae through which the vertebral artery travels a depression on the skull that houses the frontal lobes of the brain a bony projection on the tibia, below the knee a hole created by bones of the pelvis

Answers

Answer:

1. Fossa....a shallow depression in the back of the knee joint

2.Foramen.....openings in the cervical vertebrae through which the vertebral artery travels

3. Fossa....a depression on the skull that houses the frontal lobes of the brain

4. Tubercle...a bony projection on the tibia, below the knee

5. Foramen....a hole created by bones of the pelvis

What is the importance of life processes in the human body?​

Answers

Answer:

life processes is importance to carry out daily life activities.they help to produce energy and maintain homeostasis in the body

Which set of features below best describes the radiolaria?
a. phytoplankton; silica 'hard parts'
b. zooplankton; silica 'hard parts'
c. zooplankton; calcite 'hard parts'
d. phytoplankton; cellulose 'hard parts'

Answers

Answer:

The correct option is b

Explanation:

Radiolaria (or radiozoa) are protozoa that produce mineral skeleton often made up of silica. They exist as zooplankton in ocean bodies. Zooplanktons are heterotropic planktons that live in open water bodies; they feed on bacteria and algae and are fed on by fish and insects.

The skeletal remains of Radiolaria make up a large part of the ocean floor and are referred to as siliceous ooze.

From the above explanation, we can deduce that the correct option is b

Answer:

The correct option is b

Explanation:

Radiolaria (or radiozoa) are protozoa that produce a mineral skeleton often made up of silica. They exist as zooplankton in ocean bodies. Zooplanktons are heterotropic planktons that live in open water bodies; they feed on bacteria and algae and are fed on by fish and insects.

The skeletal remains of Radiolaria make up a large part of the ocean floor and are referred to as siliceous ooze.

From the above explanation, we can deduce that the correct option is b

A biology student wanted to study the effect of fertilizer on the growth of tomato plants. He placed four of
the same type of tomato plants into separate containers, each containing the same amount of soil. Each
pot received a different watering solution containing varying amounts of fertilizer.
The table below shows the average height of the plants by the end of one week.
Plant group
Fertilizer amount (g)
Avg height of plants (cm)
1
O
3.0
2.
5
3.2
3
10
4.4
20
5.0
Which of the plant groups is the control group?

Answers

Answer:

plant group 1

Explanation:

Because, it is the only one that has not gotten fertilizer

The plant group that is the control group is plant group 1.

What are fertilizers?

Any substance of earthy or man-made origin applied to soil or plant tissues to provide plant nutrients is referred to as fertilizers. It's possible to distinguish fertilizers from spreading agents.

The biology student is studying the effect of fertilizers on plants. Fertilizers increase the growth of the plant, and they also affect the soil of the plant in which they grow.

There are three groups of plants that are used. The growth of the first plant is O and 3.0. The growth of the second plant is 5, 3.2, 3, and 10 and the growth of the third plant is 10, 4.4, 20, and 5.0.

By seeing the Table, we can assume that the growth of plant group 1 is most affected and all other plants have similar.

Thus, the plant group is 1.

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One hot afternoon you are
standing on a beach and
notice the wind blowing in your
face as you look out to the
ocean. Why is this happening?
I NEED HELP ASAP!!!!

Answers

Answer:

The ocean breeze is causing a breeze coming toward the land from the sea towards the land. this is in all likelihood happening in light of the fact that as cooler air sinks back to the surface, it is blown towards the land and is warmed by Earth.  

Sea breezes happen during summer days due to the inconsistent warming rates of land and water. During the day, the land surface warms up quicker than the water surface. Consequently, the air over the land is hotter than the air over the sea. Presently, review that hotter air is lighter than cooler air.

How are soil and plant taxonomy the same

Answers

They are both used to benefits plants growth process.

When presented with the question “Does soil acidity have an effect on the production of peppers,” develop a hypothesis to answer this question and then design a small controlled experiment to test the hypothesis, listing all procedures and variables. PLEASE PLEASE SOMEONE HELP!!!!!!!!!!!

Answers

Answer:

well just search in google if someone did a lab and then copy the lab. But basically, yes it would. The pepper plant would either die or have to adapt to the acidic soil which it wouldn't be able to do. But have a control which has no acidity and then have three other plants with more acidity then the last and watch them grow.

Explanation:

How many elements in nitrogen monoxide?

Answers

Answer:

Two elements

Explanation:

Nitrogen and Oxygen only, (NO)

Lysosomes contain enzymes that are necessary for what?

Answers

Answer:

They break down all types of biological polymers—proteins, nucleic acids, carbohydrates, and lipids.

Explanation:

Answer:

breaking down of food

Explanation:

Lysosomes are membrane-enclosed organelles that contain an array of enzymes capable of breaking down all types of biological polymers—proteins, nucleic acids, carbohydrates, and lipids.

The island of Hawaii experiences volcanism because it is located
O above a hot spot
O above an active mid-oceanic ridge
O along a transform fault
O a site where 2 plates are colliding
above a subduction zone​

Answers

Answer:

Scientists believe that the reason Hawaii has so many volcanoes is because it is located above a hot spot that is suspected to start at earths liquid core.

Explanation:

Which statement describes the focus of an earthquake?

Answers

Answer:

B. It develops in the lithosphere.

Explanation:

the other person was right :)

Answer:

B

Explanation:

what molecule of carbon has the least energy?

Answers

If there isn’t multiple choice I think it is the ones in the center ring (the closest ring to the center) of the atoms

What is the molecular weight of 1 mole of NaCl where the atomic mass of Na = 23 and Cl = 35.4?

Answers

60.4 is the answer I think

What happens to the gravitational force between two objects as they move farther apart? A:it increases B:it decreases C:it remains the same D:it fluctuates

Answers

Answer:

B. it decreases

Explanation:

This is because the force of gravitational attraction depends on the masses of both objects as well as how far away they are from each other.

What types of cells contain a cell
wall?

Answers

Answer:

Plant cell

Explanation:

Cell wall only in plant cells

In an atom, which particles make up
the
nucleus?


Answers

The answer is protons

Answer:

Neutrons And protons

Why do living things share fundamental characteristics

Answers

Answer:

All living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, growth and development, regulation, homeostasis, and energy processing. When viewed together, these characteristics serve to define life.

Life processes are important to carry out daily life activities. They help to produce energy and maintain homeostasis in the body. The life processes help a body survive with the changes in the environment.

There are several fundamental characteristics or capacities that all living things share, including order, environmental sensitivity or responsiveness, reproduction, growth and development, regulation, homeostasis, and energy processing.

What fundamental characteristics share by living things?

All living things share certain basic characteristics or functions, such as order, sensitivity to their environment, growth and development, reproduction, regulation, homeostasis, and the ability to process energy.

These characteristics work to define what it means to live. These characteristics collectively contribute to the definition of life. All of these characteristics will be found in living things.

All living things share the capacities to procreate, grow and develop, use energy, maintain homeostasis, respond to their environment, and be adaptable.

Therefore, all living things share fundamental characteristics.

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What challenges cell biologists face in the 21st century?

Answers

Answer:

There are many types of challenges are faced by the scientists in 21st century. some are as given below:

Explanation:

1. Getting biodiversity. We're losing species at a disturbing rate, and we have to comprehend what the implications of that may be.  

2. sustainable development. Like feasible agriculture, yet more broad sense. Discovering approaches to accommodate human needs while limiting the mischief we cause to the earth is urgent.  

3. Everything about hereditary qualities. It's simply so much fun.  

4. The most effective method to cut across political, social, and social limits and spur enormous and little scope activity to lessen biodiversity loss. This point may have a hefty sociology component, yet it's significant. All the natural and biological information on the planet won't make any difference on the off chance that we can't get individuals to follow up on it.

true or false Geoengineering will have no negative effects on the environment.

Answers

The answer is false

It is false that geoengineering will have no negative effects on the environment.

What is geoengineering ?

Geoengineering, also known as Climate Engineering, is the deliberate, extensive modification of the Earth's environment and climate in order to stop further climate change, halt and stop global warming, and lessen the effects on human society and the ecosystem.

Spraying compounds into the atmosphere to create reflecting aerosols and reflect sunlight into space is known as solar geoengineering. Although this would prevent global temperatures from rising, local or regional temperatures may still rise over the coming years, according to a recent study.

Hence, it is false that geoengineering will have no negative effects on the environment.

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Why are the chloroplasts found mostly in the leaves

Answers

Answer:

The leaves and sometimes the stems of the plants contain chloroplasts.

Explanation: which produce ATP to meet the energy needs of these plant parts.

the disease erythroblastosis fetalis (also called hemolytic disease of the newborn) develops in a fetus or a newborn infant with Rh-positive blood and an Rh-negative mother. Symptoms results when maternal anti-Rh antibodies cross the placenta and interact with the fetus' erythrocytes. Why are the children of Rh-positive mothers not ay risk for this disease

Answers

Answer:

Explanation:

Hemolytic Disease of the newborn (HDN, Erythroblastosis Fetalis) is a blood disorder occurring at or around birth, where the blood groups of the mother and baby are not compatible. It occurs when the antibodies from a Rhesus negative (Rh-negative) mother, who has been sensitized from previous pregnancies or other means (transfusion etc), gives birth to an Rh-positive baby, and the blood of the mother and the baby eventually mixes. This causes the anti-Rhesus antibodies in the mother's blood to attack the Rhesus antigen (Also Called Anti-D antigen) on the baby's red blood cells, causing hemolysis that leads to several unpleasant symptoms.

Children of Rh-positive mothers are not at risk of developing HDN, because the mother does not produce anti-Rh antibodies since she is positive, hence there will be no antibodies to cross the placenta and react with the baby's rhesus antigens for Rh-positive babies.

A conveyer belt moves a 40 kg box at a velocity of 2 m/s. What is the kinetic energy of the box while it is on the conveyor belt?

Answers

I have no idea tbh I just want points sorry not sorry

Which of the following should be used to make a precise measurement of
liquid volume?
A. Microscope
B. Test tube
C. Thermometer
D. Graduated cylinder

Answers

Answer and Explanation:

D. Graduated Cylinder

You use a Graduated Cylinder. Graduated cylinders have numbers on the side that help you determine the volume. Volume is measured in units called liters or fractions of liters called milliliters (ml).

The Graduated Cylinder used to make a precise measure of liquid volume. Graduated cylinders have digits on the side that help you select the volume. Volume is measured in units called liters or fractions of liters called milliliters (ml).

What tool is used to measure the volume of a solid?

A volume of water adequate to cover the things is placed in a graduated cylinder and the volume read.

The entity is added to the cylinder and the volume read again. The contrast between the two volumes is the volume of the object.

Thus,The Graduated Cylinder used to make a precise measure of liquid volume.

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The part of the gene that is designated as 1 is also known as:________.

Answers

Answer:

Immune or sensory genes.

Explanation:

The part of genes designated as part 1 Gene is refer to immune or sensory genes because these part of gene play a vital role in immune response or sensory signals of the cell.

The part of genes have the same Expression level and different copy number variable region.

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