Why are cells considered to be the basic units of life?


A. Cells have their own organs.

B. All cells can produce their own food.

C. The cells do the work that keeps all organisms alive.

D. Cells form tissues and organs in every living organism

Answer:

A. Magnetic field

Explanation:

Hope this helps

Answer:

C

Explanation:

Answer:

The correct answer is - deals with the motion of an object without or with the reference of force.

Explanation:

The mechanism is the branch of sciences that deals with an object in a motion under the reference force or the object that remains at rest. This branch of physics leads to topics of gravitational force, electricity, quant, or magnetism according to the nature of the forces involved.

Modeling, aerodynamics, and all other applications of mechanics required the use of laws of newton, the formula of mathematics, and algebra.

Answer:

Because there are tens of thousands of genes in humans and other organisms, DNA contains a tremendous amount of information about the evolutionary history of each organism. ... It determines evolutionary relationships among organisms, and it indicates the time in the past when species started to diverge from one another.

I mean global warming is pretty fast ngl

Answer:

increases the amount of energy in the Earth's budget.

Explanation:

Increase occurs in the amount of sea ice at the north pole leads to increases the amount of energy in the Earth's budget because this sea ice reflects the solar radiation back to space. Sea ice has a bright surface which causes 80 percent of the solar radiation reflected back into space. As sea ice melts in the summer, it exposes the dark ocean surface which leads the ocean to absorbs 90 percent of the sunlight which heat up the oceans, and increase in the temperature occurs causes more melting of ice so increasing sea ice is good for the earth.

Answer:

the chances of the offspring having white eyes is 50%

Explanation:

i used a punnet square to calculate the output:)

Answer:

25%

Explanation:

There's a 50% chance of the offspring being male & 50% chance female. The genotypes must be co-dominant otherwise their question doesn't give enough information to get an anwser. Also a 50/50 chance of red/white, so added together a 25% chance.

Also, the funny thing is that remember this from 7th grade so you must be reviewing things that evreyone learned a long time ago but forgot.

Answer:

C

Explanation:

Answer:

A Protista is the answer

Answer:

1. Muscle tissue.

2. Epithelial tissue.

3. Nervous tissue.

4. Connective tissue.

5. Epithelial tissue.

6. Muscle tissue.

7. Connective tissue.

Explanation:

A tissue can be defined as a group of cells that are structurally similar and in close proximity. Tissues are generally responsible for performing specific functions in living organisms such as humans, animals and plants. Therefore, tissues in living organisms function together as a unit.

There are four main types of tissues and these includes;

I. Connective tissue.

II. Epithelial tissue.

III. Muscle tissue.

IV. Nervous tissue.

In this scenario, the various types of tissues are matched with their functions as follows;

1. Muscle tissue: propels food through the digestive tract. It is mainly performed by peristalsis.

2. Epithelial tissue: lines internal and external body surfaces. It also referred to as epithelium and it comprises of sheets of cells.

3. Nervous tissue: conducts electrical impulses. A neural circuit can be defined as a group of neurons in the body of a living organism which are interconnected by synapses to perform specific functions when they're activated.

4. Connective tissue: transports oxygen to the body tissues predominantly through the Erythrocytes (red blood cells).

5. Epithelial tissue: functions in secretion and absorption.

6. Muscle tissue: pumps blood.

7. Connective tissue: stores fats and minerals.

Answer:

I believe yes and no at the same time

Explanation:

If we do end up colonizing Mars, Earth could slowly get better as time goes on, but when we do colonize Mars, wont we just do the same thing we did to Earth?

Answer:

Yes it could be, here are the pros.. Colonizing Mars is one of the most promising backup plans for humanity . Mars is relatively close to our Earth . Colonizing Mars may become possible in just a few decades . Many celebrities support those plans . Many scientists advocate for this kind of backup plan . Extraction of additional natural resources . May help with the search for other life forms . We could learn as global human species . Humanity needs challenges to progress . Knowledge is power . May help to mitigate the overpopulation problem on Earth . Colonizing Mars is an image project . Future generations would be able to adapt quite quickly on Mars . May be a good long-term investment for institutional investors

But there are also some cons.. Colonizing Mars is extremely expensive . It takes a while to travel to Mars ; Lack of water may become a serious problem . Plenty of insecurity involved in this plan . Completely different living conditions . Humans need protective equipment before going outside . It’s freezing cold on Mars . Some people have to make the beginning . May not be justifiable from an ethical standpoint . Colonizing Mars may conflict with religion . Money can be better used to solve our problems on planet Earth . Some scientists believe that efficient live on Mars will not be possible . Quality of life on Mars would be much lower . Rather insecure food supply . Radiation may become a problem . Still unclear if living on Mars is sustainable . We would alter the balance in our universe . Colonizing Mars can be dangerous . Space exploration implies significant pollution . Other life forms may not be welcoming towards us humans . Short-term costs vs. long-term gains

In conclusion, no it would not be a good idea.

Answer:

Humans are a big reason for this issue. Things such as pollution, hunting, construction, and animal testing all effect the wolves population. Their food is hunted by humans so its harder for them to hunt, humans tear down trees and take over ground so theres less places to live, they might eat things like plastic because people litter, and things like dangerous weather can harm these animals.

Answer:

dATP, dTTP, dGTP and dTTP are four common dNTPs used in PCR. The function of dNTPs in PCR is to expand the growing DNA strand with the help of Taq DNA polymerase. It binds with the complementary DNA strand by hydrogen bonds. The PCR is an in vitro technique of DNA synthesis.

Explanation:

hope this helps you

Answer: The amount of water in the stream and the gradient.

However if you had two streams both with the same amount of water in them but with one stream flowing down a steeper slope (gradient) than the other, then the steep one has more ability to erode.

Explanation:

Answer:

1

Explanation:

Cause the diagram represents the production of skin cells 16

Answer:

30

Explanation:

Answer:

30

Explanation:

Answer:

The transgene could be silenced by: 1- epigenetic mechanisms (e.g., DNA methylation, histone deacetylation, etc.), and 2-the RNA interference (RNAi) pathway

Explanation:

Epigenetics refers to the heritable changes caused by the activation and deactivation of genes without changing the DNA sequence. Epigenetic mechanisms include 1-DNA methylation on cytosine residues, and 2-modifications on amino acids in the tails of histone proteins (e.g., methylation, acetylation, ribosylation, phosphorylation, etc). These two epigenetic mechanisms can modify DNA structure and thus alter the accessibility of transcription factors, thereby suppressing gene/transgene expression. Moreover, the RNA interference pathway (RNAi) is a naturally occurring mechanism capable of suppressing gene/transgene expression both at transcriptional and post-transcriptional levels. The RNAi mechanism is triggered by regulatory non-coding RNAs (ncRNAs) such as, among others, long non-coding RNAs (lncRNAs) and small ncRNAs (e.g., miRNAs, piRNAs, siRNAs, etc). In this case, for example, DNA methylation on promoter sequences could suppress transgene expression, thereby methods to measure DNA methylation can be used to test this possibility (e.g., bisulfite genomic sequencing). Moreover, miRNAs that bind to the messenger RNA of the transgene could also inhibit its expression by triggering the RNAi pathway (e.g., mRNA degradation), thereby methods to measure mRNA levels can be used to test this possibility (e.g., RT-PCR).

Answer:

plasma, red blood cells, white blood cells, and platelets.

Explanation:

Hope this helps!

Answer:

Aerobic respiration requires oxygen to break down glucose into water, carbon dioxide and energy (ATP). These are the three major stages in aerobic respiration

Biodiversity is the variety of life habiting the earth's ecosystem with numerous genetics and ecosystem levels. Protecting lands will increase biodiversity.

Biodiversity is the variety of living organisms living together in an area, that works together in an ecosystem to support life and maintain the population.

Biodiversity is affected by the temperature, food, reproduction rate, and habitat. Protecting the habitats will increase biodiversity.

Changes in temperature will affect biodiversity negatively, and decreasing food and reproduction ability will decrease the population of the biodiversity.

Therefore, option D. protecting lands can increase biodiversity.

Learn more about biodiversity here:

https://brainly.com/question/23037354

Answer:

* Glucose may cause an increase in bacterial growth - HYPOTHESIS

* The bacterial colonies grown without glucose don’t have capsules around their cells - OBSERVATION

* Bacterial growth in the glucose environment increased rapidly and then stopped after some time - OBSERVATION

* Increased glucose may lead to capsule formation in bacteria - HYPOTHESIS

Explanation:

In an experiment, a HYPOTHESIS is a predictive and testable statement that aims to answer a scientific question while an observation is made based on the results obtained.

According to this question, Annie wants to study the effect of glucose on bacterial colonies. She conducted the experiment by growing two colonies of bacteria - one with glucose present in the environment and one in an environment without glucose. Based on this experiment, the following statements are categorized as:

- Glucose may cause an increase in bacterial growth is a HYPOTHESIS

- The bacterial colonies grown without glucose don’t have capsules around their cells is an OBSERVATION

- Bacterial growth in the glucose environment increased rapidly and then stopped after some time is an OBSERVATION

- Increased glucose may lead to capsule formation in bacteria is a HYPOTHESIS

Answer:

true

Explanation:

Since the present is the key to the past, what we know about a type of organism that lives today can be applied to past environments. Fossils give us clues about past environments (foraminifera), the motion of plates, and other major geological events.

Answer:

Shivering and sweating.

Explanation:

A prolonged exposure to extreme cold environment would activate the brain's heat-gain center. Your brain's heat-gain center causes shivering in order to increase our muscle contraction which leads to warming of our body.  Increase sweating is the regulatory processes our body use if it experience very high temperature. In order to regulate internal temperature of body, our body remove water which takes up heat with itself to lower th internal temperature.

Answer:

Cell division is the process by which a parent cell divides into two or more daughter cells. Cell division usually occurs as part of a larger cell cycle.