20 Points!

Question:
Study the illustration. The small blue spheres represent water molecules.

In which direction will water molecules move across the membrane?


Water will move from A to B.


Water will move from B to A.


There will be no net movement of water.

Answer:

90,000

Explanation:

It would be 90,000 because it is a pattern, 90, 900, 9,000, and 90,000.

The Correct choice is C

The difference in concentration of materials across a space is called the Concentration gradient .

Answer:

Prokaryotic cells can only regulate gene expression by controlling the amount of transcription. As eukaryotic cells evolved, the complexity of the control of gene expression increased. For example, with the evolution of eukaryotic cells came compartmentalization of important cellular components and cellular processes.

Explanation:

Hope this helps.

Answer:

Defective checkpoints results in death of the cell.

Normal checkpoints make sure the cell has enough resources for cell division. Normal checkpoints ensure the cells commits apoptosis if the cell has a problem it cannot fix itself.

Answer:

c is correct

Explanation:

Answer:

29.5 Days.

Explanation:

The Moon takes 27.3 days to orbit Earth, but the lunar phase cycle (from new Moon to new Moon) is 29.5 days.

Answer:

Me

Explanation:

i rather be in person

Answer:

I believe your answer would be Accelerating/speeding up

Explanation:

If the bus was moving at a constant speed, the line would be flat

if the bus was slowing down, the line would decrease

if it was not moving, there would be no line

Answer:

The mantle of the earth is made mostly of solid rock

Answer:

Explanation:

stalagmite, elongated forms of various minerals deposited from solution by slowly dripping water. A stalactite hangs like an icicle from the ceiling or sides of a cavern. A stalagmite appears like an inverted stalactite, rising from the floor of a cavern.

Answer:

thw anser is A

Explanation:

Answer:

A

Explanation:

It is about planets and planets are in space.

Answer:

bacteria

Explanation:

bacteria and archaea are the only prokaryotes.

Answer:

Cycad

Explanation:

I am not 100% sure please correct me if I am wrong

Answer:

Mendel formulated the law of segregation as a result of performing monohybrid cross experiments on plants. The specific traits that he studied exhibited complete dominance. Not all types of genetic inheritance, however, show total dominance. In incomplete dominance, neither allele is completely dominant over the other.

Explanation:

Hope this helps.

Mendel need to grow two offspring generations (F1 and F2) to develop his law of segregation because the first generation offspring had just one form of each trait. The second generation showed both forms of the trait due to segregation.

When an organism produces gametes, each gamete receives only one gene copy, which is chosen at random. This is defined as the law of segregation. A Punnett square can be used to predict the genotype (allele combination) and phenotype (observable traits) of the offspring from a genetic cross.

This law of segregation, called the second law of inheritance, states that during meiosis cell division (gamete formation), pairs of alleles separate from each other so that only one allele is present in each gamete.

Mendel formulated the law of segregation as a result of experimenting on monohybrid crosses on plants. The specific traits he studied showed complete dominance. However, not all types of genetic inheritance show total dominance. In incomplete dominance, neither allele is completely dominant over the other.

Thus, Mendel need to grow two offspring generations (F1 and F2) to develop his law of segregation because the first generation offspring had just one form of each trait. The second generation showed both forms of the trait due to segregation.

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Answer:

A protein that specifically binds lipids or oils

Explanation:

It has a selective permeable Bowman's capsule that only allows food substances and food products to pass through but prevents the passage of plasma proteins and blood cells. ... The kidney tubules are highly vascularised to ensure constant removal of reabsorbed substances hence creating more room for further reabsorption.

Answer:

H20 the 3rd one.

Explanation:

2 Hydrogen molecules and 1 Oxygen molecule.

Explanation:

In order to meet the basic needs of increases population, the present society has under taken a series of steps like rapid industrialization, unplanned urbanisation, deforestation, overexploitation of natural sources, etc.

The outcomes of the above human activities have contributed significantly to the degradation of environment around us.

Some important impacts of human activities on environment are outlined below:

1. Deforestation:

In order to provide timber and farm land to increased population, large number of forest trees are cut and forest area is converting to farm lands. The rate of deforestation is so faster that around 1.5 million hectare of forest cover is lost every year is India alone. The process of deforestation results in decreasing rainfall, increasing global temperature, loss of top soil, modification of climatic conditions etc.

2. Industrialization:

Although the industrial activities of man provide basic need of the society, simultaneously the same release a lot of pollutants to the environment. The pollutants in environment cause loss of raw materials, health hazards, increase in death rate, damage to crop, making environment unfit for living organisms etc.

3. Loss of ecological balance:

The excessive use, misuse and mis-management of biosphere resources results in disturbance in ecosystem or ecological imbalance.

4. Air pollution:

The anthropogenic release of various air pollutants to the environment causes a number of dreaded phenomena like green house effect, ozone layer depletion, acid rain and smog formation etc.

5. Water pollution:

Human activities in respect of disposal of sewage wastes, solid wastes, municipal wastes, agricultural and industrial wastes cause the environment unfit for day to day use. Besides, polluted water spreads or leads to different diseases.

6. Increased consumption of natural resources:

Since the starting of industrial era, the natural resources are constantly utilised for the production of one or more products for the day to day use of society.

7. Production of waste:

Rapid industrialization and unplanned urbanization release a lot of toxic waste material either in solid or liquid or gaseous state which induces a number of serious environmental hazards.

8. Extinction of Wildlife:

Since forests are natural habitats of wild life (both plants and animals) deforestation leads to the extinction of valuable wild life and loss of biodiversity.

9. Habitual destruction:

The commercial and industrial activities associated with mining, construction of dams, fishing, agriculture etc. cause habitat destruction which is a pathway to pollution.

10. Noise pollution:

The man-made noise due to mechanized automobile, industries, trains, aero planes, social functions etc. causes noise pollution which has impact on both biotic and a biotic components of environment.

11. Radiation pollution:

The radiations from radioactive substances used in nuclear reactors and nuclear weapons can have significant impact on genetic materials of body (DMA, RHA etc.)

12. Soil erosion:

The anthropogenic processes like deforestation and overgrazing induce soil erosion which causes soil moisture reduction, lowering of productivity, decline in soil fertility etc.

Answer:

Nicole

Explanation:

Sample Response: The mystery food sample did test positive for Sudan red. Nicole ate salad dressing, which contains fat, a lipid. She is the likely culprit.

.

.

The mystery food sample tested positive for lipids using the Sudan red indicator.

Nicole ate salad dressing.

Salad dressing contains fat, a lipid.

Nicole is probably guilty.

Based on the data you collected, Nicole likely left the classroom mess, objective was to determine the individual macronutrients.

This lab's objective was to determine the individual macronutrients in the unidentified food item that was left in the classroom. The following student is believed to have left a sample in the classroom.

Sample Reaction: The sample of the mysterious food tested positive for Sudan red. Nicole consumed salad dressing, a lipid that contains fat. She is the most likely offender.

The Sudan red indicator revealed lipids in the sample of the mysterious food. Lauren consumed salad dressing. Fat, a lipid, is present in salad dressing.

Therefore, based on the data, Nicole most likely did it.

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Answer:

the unique sequence of amino acids in its polypeptide chain

Explanation:

Protein is a large molecule which is made from a chain of smaller molecules called amino acids. There are twenty amino acids exist, and when they bond together they make unique proteins depending on their sequence in the chain.

Answer:

Carbohydrates are organic molecules ONLY composed of carbon, hydrogen, and oxygen molecules. So, their structure would be just covalent bonds between the three elements, and most likely non-polar. They give out a lot of energy, and carbohydrates are also known as sugars. Most foods have them.

Branliest plzzzz?

Answer:

Artery

Circulatory System

Smooth Muscle Tissue

Smooth Muscle cell

Explanation:

Answer:

Under favourable conditions, Paramecium multiplies rapidly up to three times a day. Binary fission divides a cell transversely and followed by mitotic division in the micronucleus. Macronucleus divides amitotically. The gullet also divides into two halves

Explanation:

HOPE IT HELP

Paramecium can be multiplied rapidly up to three times a day.

Answer:

These causes include habitat modification and fragmentation, introduced predators or competitors, introduced species, pollution, pesticide use, or over-harvesting. However, many amphibian declines or extinctions have occurred in pristine habitats where the above effects are not likely to occur.

Explanation:

Answer: oxígeno

Explanation:

Answer:

• Release of heat.

Explanation:

• In exothermic chemical reactions, heat is released due to multiple collisions of the reactant molecules.

→ Freezing and melting are physical changes.

• Other physical changes are;

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