All categories

3 years ago

Why are some substances able to pass through a cell membrane while others are not

Biology

1 answer:

ElenaW [278]3 years ago

4 0

Answer:

Depending on the size, some substances are able to pass through cell membranes

Explanation:

Some molecules, such as hydrocarbons and oxygen can cross the membrane. Many large molecules (such as glucose and other sugars) cannot. Water can pass through between the lipids.

Hope that answers your question.

You might be interested in

1. How did dark matter affect the development of structures in the early universe?

-Dominant- [34]

Answer:

1. It seeded the development of galaxies

2. The percentage of dark matter has shrunk in scientists' estimates since the 1980s

The percentage of unknown material has grown in scientists' estimates since the 1970%

3. Supernovae that are moving away at an accelerating rate.

Explanation:

1. How did dark matter affect the development of structures in the early universe?

It seeded the development of galaxies.

It seeded the development of quasars.

It cooled pockets of gas to form nebulae.

it became part of black holes

2. How has scientific understanding about the composition of the universe changed over time? Select the two correct answers.

The percentage of dark matter has shrunk in scientists' estimates since the 1980s

The percentage of unknown material has grown in scientists' estimates since the 1970%

The percentage of ordinary matter has grown in scientists' estimates.

The percentage of dark energy has shrunk in scientists estimates

3. Which is evidence for the existence of dark energy?

Pulsars that seem to be moving closer at an accelerating rate.

Supernovae that are moving away at an accelerating rate.

Black holes that are expanding at a constant rate.

Galaxies that are rotating at a constant rate.

Please don't use these answer's to cheat they are to help only.

6 0

3 years ago

Worldwide, how many children die each year from diseases for which vaccinations are available?

Papessa [141]

In this scenario,I guess the answer is roughly around 300 children die every year from the diseases in which the vaccinations are available. Hope this is the correct answer then and would surely be of big help to you then.

7 0

3 years ago

What can employers determine by asking about your participation in extracurricular activities?

max2010maxim [7]

Leadership and/or your ability to work with others THANK YOU FOR YOUR QUESTION!!!!

6 0

3 years ago

What is evolution in genetic terms?

kondaur [170]

biological evolution is the process of change by which new species develop from preexisting species over time; in genetic terms, evolution can be defined as any change in the frequency of alleles in populations of organisms from generation to generation.

5 0

3 years ago

Some geneticists study the genes that control bone development to try to understand bone growth and find cures for diseases. How

AnnZ [28]

Options:

a) the geneticist looks at the symptoms of a disease, and the orthopedist does not.

b) the geneticist works in a hospital, and the orthopedist works in a lab.

c) the geneticist focuses on what causes the disease, and the orthopedist treats the disease.

d) the geneticist deals with patients, and the orthopedist does not.

Answer:

The geneticist focuses on what causes the disease, and the orthopedist treats the disease. so thats why different from an orthopedist (a doctor who specializes in bones). Thus, the correct option is C.

<h3>What is chromosomes?</h3>

A chromosome is a lengthy DNA molecule that contains all or a portion of an organism's genetic code. Histones, which serve as packing proteins for the majority of eukaryotic chromosomes, work with chaperone proteins to attach to and condense the DNA molecule in order to preserve the integrity of the molecule.

A medical geneticist specializes in using DNA tests and genetic data to identify, manage, or prevent chromosome problems, inherited genetic illnesses, and other genetically driven diseases and ailments.

Orthopedic physicians, often known as orthopedic surgeons, concentrate on assisting you with musculoskeletal problems. They are responsible for identifying and managing diseases that impact your musculoskeletal system.

For more information regarding chromosomes, visit:

brainly.com/question/11912112

#SPJ1

6 0

2 years ago