help me pleaseee ?!!!

Answer:

Explanation:

6. He was investigating a mold growing in Staphylococcus culture dishes, that may have been killing bacteria.

7. He hypothesized that the mold was producing a chemical that killed the bacteria.

8. He tested the hypothesis by growing the mold in a broth then transferring it into a bacteria culture.

9. After putting mold into a culture with bacteria in it, the bacteria then died.

10. Antibiotics

Answer:

All are methods to separate mixtures

Explanation:

A mixture consists of 2 or more substances that are mixed physically but not chemically. Hence, mixtures can be separated by any physical separation means which include but not limited to filtration, distillation, sieving, magnetization, and evaporation.

Filtration is usually used to separate suspended particles in a liquid using a membrane of a filter paper. Distillation is used to separate miscible liquids with varying boiling points by evaporating and condensing them back at their respective boiling points. Sieving is used to separate mixtures with varying particle sizes of individual components.

Magnetization is usually used to separate mixtures with, at least, one component with magnetic property. Evaporation is used to separate dissolved solids from liquids.

Hence, all the methods listed are used to separate mixtures.

Answer:

The answer is D. Reflected vs Absorbed

Explanation:

Black shirts get so hot because it's absorbing all light whereas white is colder because it's reflecting all light

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Answer:

D. Reflected vs Absorbed

Explanation:

Answer:

It look good to me but I dont know for sure so we will see

Answer:

Cool and dry

Explanation: Trees tend to be sensitive to climates, so when the conditions are good the trees grows faster which results in wider growth rings and in poor conditions the tree grows slower which results in it laying down less tissue and therefore a narrower ring size. Drought and a blizzard can also cause narrower ring too. Actually, a cool way to find out if the climate conditions were good is to measure the rings of a tree every month each year. If the rings were consistently the same then you know the climate stayed pretty much the same and etc.

Answer:

The friend that says 8.0 is twice as powerful as a 4.0. Hope this helps

Answer:

false

Explanation:

Answer:

Actually, this is true

Explanation

I just took the test on edu

Answer: A field, or several fields, are taken out of crop rotation for a specific period of time, usually one to five years, depending on crop. Fallowing soil is a method of sustainable land management that has been used by farmers for centuries in regions of the Mediterranean, North Africa, Asia and other places.

Explanation:

Answer:

I believe the answer is gives cells their specific shape, severs as tracks, enables movement

Answer:

C

Explanation:

Lipids include various biomolecules whose common property is their insolubility in water. Lipids include a variety of molecular types, such as neutral fats, oils, steroids, and waxes. Unlike other classes of biomolecules, lipids do not form large polymers

Answer:

B

Explanation:

B. Move the protons and neutrons to a small space in the center.

Answer:

B. Move the protons and neutrons to a small space in the center.

Explanation:

Answer:

Gross primary production (GPP) is the total rate at which material is produced and net primary production (NPP) is the rate at which material is accumulated in excess of respiration. In other words, NPP is GPP minus respiration. ... Net primary production is directly related to ecosystem conditions.

The correct answer is :you should look first to the answers to your own questions.

Answer:

Grandmother was Left-handed

Explanation:

I can tell this because she had thicker upper and lower arm bones on her left arm, compared to her right arm, telling me her left arm was dominant.

Answer:

The water needed for photosynthesis is absorbed through the roots and transported through tubes to the leaf. The roots have a type of cell called a root hair cell. These project out from the root into the soil, and have a big surface area and thin walls. This lets water pass into them easily.

Explanation:

Hope this helps

Answer:

The longer the wavelength, the less energy is carried.

Explanation:

Short, tight waves carry the most energy.

Answer:

Cell differentiation is how generic embryonic cells become specialized cells. This occurs through a process called gene expression. Gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a cell functions.

Explanation:

Hope that helped if it did please give me brainiest Thanks :3 <333333

Answer:

Honey > Water > oil > air

Explanation:

Heavy density will sink and less heavy density will float

So,

Density of honey is highest so, honey will sink

than,

Density of water is higher so, vegetable oil will float

Density of oil is higher so, air will float

Honey > Water > oil > air

Answer:

[tex]\boxed {\tt Golgi \ apparatus}[/tex]

Explanation:

After a protein is produced on a ribosome it is sent to the endoplasmic reticulum. Here, proteins fold and then are sent to the golgi apparatus.

In this organelle, proteins are modified and labeled. Sugar groups (modifications ) and tags/signals (labels) can be added. From the golgi apparatus they are sent to different destinations or secreted.

So, the correct answer is Golgi apparatus.

Golgi apparatus

The Golgi apparatus, which is usually situated near the nucleus, receives proteins and lipids from the ER, modifies them, and then dispatches them to other destinations in the cell. Transport from the ER to the Golgi apparatus—and the Golgi can either move onward through the Golgi stack or, if they contain an ER retention signal, be returned to the ER; proteins exiting from the Golgi are sorted according to whether they are destined for lysosomes (via endosomes) or for the cell surface.

Small population is the answer

Your welcome

According to the Charles darwin theory of natural selection, genetic diversity best allow a species to survive environmental changes.

Natural selection is the procedure via which populations of living organisms acclimate and modify.

Individuals in a population are naturally variable, indicating that they are all distinct in some manner. This divergence means that some individuals have characteristics better suited to the environment than others.

Natural selection leads to evolution.

Thus, genetic diversity best allow a species to survive environmental changes.

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Answer:

Perspiration provides homeostasis to the internal condition of temperature balance.

Explanation:

Perspiration occurs as a consequence of the increase in environmental temperature, which at the same time produces an increase in body temperature.

The high body temperature produces a stimulus that reaches the thermoregulation center of the central nervous system, which produces a response transmitted through the sympathetic nervous system, causing the sweat glands to increase the production of sweat.

The sweat that covers the skin is capable of acting as a physical agent to lower the temperature, a mechanism of thermal regulation that contributes to temperature balance.

The other options are not correct because:

Answer:

temperature balance

Explanation:

Answer:

It’s nucleus

Explanation:

have a good day;)

Answer:

1, nucleus.

Explanation:

Answer:

It is located in the nucleus

Explanation:

Answer:

Explanation:

nucleus

The nucleus is particularly important among eukaryotic organelles because it is the location of a cell's DNA.

Answer:

Informal science education (ISE) is lifelong learning in science, technology, engineering, and math (STEM) that takes place across a multitude of designed settings and experiences outside of the formal classroom

i hope this help

Explanation:

Informal science education (ISE) is lifelong learning in science, technology, engineering, and math (STEM) that takes place across a multitude of designed settings and experiences outside of the formal classroom.

Answer:

Density = 0.4g/cm³

Explanation:

Given

Mass = 12 g

Length = 3 cm

Required

Determine the density.

To calculate density, we need volume.

Volume of a cube is:

Volume = Length ³

Hence:

Volume = (3cm)³

Volume = 27cm³

Density = Mass/Volume

Density = 12/27

Density = 0.4g/cm³ --- Approximated

Answer:

The answer you are looking for is D.

Explanation:

Lipids are molecules that contain hydrocarbons and make up the building blocks of the structure and function of living cells. (non- polar molecules)

Lipids are fat molecules and are hydrophobic (water repulsive) in nature. Thus, option D is correct.

Lipids are important biomolecules and are widely distributed in biological systems. Lipids are organic macromolecules.

Lipids are insoluble in water (polar) and require non-polar solvents mainly hydrocarbons for dissolution like petroleum, ether etc. Thus, non-polar in nature.

Lipids include array of molecules like fats, wax, steroids, vitamins (fat-soluble; A,D, E and K), hormones, oils etc and have diversified functions.

Lipids form an integral part of the cell membrane. It also surrounds membranous structures. It protects the cellular membranes by creating an insulating layer.

Lipids are essential for storing and conserving energy in mammalian body. It helps in metabolism of glucose by converting extra glucose to glycogen in adipose tissues.

Lipids also act as transport molecules in the body. Many lipids function as chemical messengers.

Therefore, Lipids play a pivotal role in living system.

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