1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vekshin1
3 years ago
7

A sodium-potassium pump within a cell membrane requires energy to move sodium and potassium. the movement of glucose does not re

quire energy. what is the movement of these materials
Biology
1 answer:
RideAnS [48]3 years ago
6 0
So sodium and potassium move by active transport using a pump

Glucose moves by a method of passive transport, facilitated diffusion. Ions moving with facilitated diffusion use channels, but a molecule like glucose would use a carrier protein.
You might be interested in
Does cigarette smoking have cognitive effects
VMariaS [17]
Yes, there is growing evidence that cognitive impairment is associated with cigarette smoking.
5 0
3 years ago
A specialized protein in saliva breaks up starch molecules in food into smaller chains of simple sugars. In this reaction, which
Anarel [89]

Answer:

option d, b, c

Explanation:

Starch molecules taken into the mouth from food substances are processed to an extent of 30% of its digestion. this is carried out by a specialized protein/ an enzyme that is present in the saliva; called  amylase or ptyalin. this enzyme acts on the substrate molecule which in this case is starch molecules and convert it into smaller chains of simple sugars that includes maltose and dextrin which is digested in the small intestine.

5 0
3 years ago
Fill in the blank Competition drives natural selection as individual members of a species compete with each other for limited na
maks197457 [2]

Answer:

1. Intraspecific

2. speciation

3. fossil record

4. The fossil record provides empirical evidence for evolution because it shows that species now aren't the same as species that existed in the past and that small changes happen over time to create new species.

5. A geographic variation in the fossil record occurs when two similar organisms occupy the same time span in two different places. These organisms hold the same purpose within the overall ecology.

6. A more detailed fossil record is preferable for supporting evolution because it allows for the instances of gradual change to be recorded and placed into broader speciation events.

7. Fossils provide a great many intermediaries that connect past species with their living descendants.

8. Intraspecific competition is competition that occurs within species. This is the competition that drives natural selection.

Explanation:

penn foster

8 0
3 years ago
A decrease in the resting membrane potential is __________ whereas, __________ is an increase in the membrane potential.
nexus9112 [7]

Answer: depolarization; hyperpolarization

Explanation:

At resting potential (absence of stimulus), the cell membrane of a neuron is said to be polarized with a net negative charge within due to more potassium (K+) ions present than sodium (Na+) ions.

However, an impressed stimuli reverses the ions content as K+ ions flows out and quickly replaced by Na+ ions, resulting in a decrease in membrane potential and a more positive cell membrane. Thus, depolarization occurs.

An increase in the membrane potential (so that it becomes more negative) is called hyperpolarization.

4 0
3 years ago
Read 2 more answers
Which statement is true?
svet-max [94.6K]

Answer:

RNA molecules are made of nucleotides. (Ans. C)

Explanation:

RNA, which is also known as ribonucleic acid is found in cytoplasm of the cell, and synthesized in the nucleus. It is shorter, and a single stranded molecule. It is composed of one or more nucleotides which are linked together by phosphodiester bonds.

In RNA, the ribonucleotide contains pentose sugar ribose, four nitrogenous bases (A,U,C,G), and a phosphate group. RNA plays many types of role in cells, but mainly involved in the translation process, and it's regulation which is known as protein synthesis.

5 0
3 years ago
Read 2 more answers
Other questions:
  • What is the equation for photosynthesis ~ Branliest
    8·2 answers
  • Which is a common clinical manifestation of hypopituitarism that occurs due to deficiency of growth hormone (GH) or a deficiency
    7·1 answer
  • Will give brainliest:
    7·1 answer
  • how would plant populations be affected if the populations of decomposers such as earthworms decreased dramitically
    8·1 answer
  • Angina pectoris is the accumulation of plaque on the inner walls of arteries.
    9·1 answer
  • A single-celled organism, like bacteria or a Paramecium, are:<br> A.multicellular<br> B.unicellular
    10·1 answer
  • The virus attacks T cells, which coordinate the<br> response
    11·1 answer
  • 1. the process by which organisms produce new organisms of the same type ____________________
    13·1 answer
  • What does that mean and how can our skin color be so varied?
    6·1 answer
  • In the formula for determining a population's genotype frequencies, the 2 in the term 2pq is necessary because?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!