The nucleolus is inside the nucleus. Its primary job is to make rrna.

Let's look at the original hypotheses arising from the original question: "Does the size of the

kicyunya [14]

Answer:

<em><u>H1: false, the observations of the molecules do not support the hypothesis...</u></em>

Explanation:

The cell membrane is comprised of a phospholipid bilayer, proteins, and cholesterol. These components help the membrane to maintain its selective permeability and concentration of solutes and water.

The lipid molecules have polar hydrophilic heads and hydrophobic tails. These only readily allow for the movement of small non polar molecules. Other substances, like charged ions and large molecules require transport proteins to move in and out of the cell. Hypothesis: H+ is small and should be able to move freely through the membrane, While glucose is large and cannot move freely

Observing H+, despite being very small these cannot easily pass through the membrane. They require transport proteins called channels for their free movement or passive movement across the membrane.

For glucose, these molecules pass through specialized channels in facilitated diffusion. They move down their concentration gradient into the cell. To move out of the cell against its concentration gradient glucose requires ATP for active transport.
Cortisol, is a large steroid hormone, taken into the cell by simple diffusion across the lipid membrane, down its concentration gradient.

6 0

3 years ago

What determines the types of chemical reactions that an atom participates in? Is it the number of electrons in the outermost she

eduard

The number of electrons in the outermost shell determines essentially the type of chemical reactions that an atom participates in it is because these electrons are involved in chemical reactions as they can be donated, shared and thus rearranged by forming covalent bonds to produce new substances

5 0

3 years ago

Students observed cells under the microscope. They observed that the cells had a cell wall, cell membrane, nucleus, and many chl

Phoenix [80]

C
Both animal and plant cells possess a nucleus and cell membrane however chloroplasts and a cell wall are only in a plant cell indicating that the answer must be C.

3 0

3 years ago

An infectious disease researcher isolates the pathogen responsible for an emerging disease. The microbe is grown in the lab. A p

malfutka [58]

An infectious disease researcher isolates the pathogen responsible for an emerging disease. The microbe is grown in the lab. Preparation of the laboratory-grown microbe is treated with a lethal dose of ionizing radiation and then tested for its potential as a vaccine and this is Inactivated type of Vaccine.

<h3>What exactly are pathogens?</h3>

Pathogens include viruses, bacteria, fungi, and parasites that can enter the body and harm the immune system. Among many additional viruses that can lead to serious illnesses are anthrax, HIV, the Epstein-Barr virus, and the Zika virus.

<h3>What is vaccination?</h3>

An easy, secure, and reliable method of preventing hazardous infections before you are exposed to them is vaccination. It boosts your immune system and builds up your body's natural defenses against particular infections.

<h3>Inactivated vaccine:</h3>

In inactivated immunizations, the disease-causing microorganism is eliminated.

Inactivated vaccines typically don't provide as strong of immunity (protection) as live vaccines. Therefore, it can take several doses (booster injections) throughout time to keep up your resistance to diseases.

Using inactivated vaccinations, you can guard against

Flu
Hepatitis A
Polio
Rabies

Learn more about Vaccines here:-

brainly.com/question/27189850

#SPJ4

3 0

2 years ago

A car moves with an initial velocity of 15 m s-1 and accelerates with constant acceleration 4 m s-

timofeeve [1]

Initia Velocity(u) :- 15m/s

Acceleration(a) :- 4m/s2

Time Taken(t) :- 50 Seconds

{ok a formula is there —->>> s = ut + 1/2 at2(it is ‘t’ square)….. now we will write like this and yeah don’t write this}

We Know,

s = ut + 1/2 at2

s = (15*50 + 1/2 *4*50*50)m

s= (750 + 5000)m

s = 5750 m

Therefore distance traveled is 5750 meters.

Hopefully this helps

5 0

2 years ago