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
lisabon 2012 [21]
2 years ago
10

I need help with number two an 3 I already did one brainliest badge

Biology
2 answers:
inysia [295]2 years ago
7 0
Answer
1) density = mass / volume
1170/150 = 7.8g/cm^3
2) mass = density * volume
13 * 75 = 975
Serhud [2]2 years ago
6 0
I’m not sure if you got the wrong number
You might be interested in
Neurotransmitters are released from axon terminals via
love history [14]

Answer:

Neurotransmitters are released from axon terminals via exocytosis

Explanation:

Dendrite is the receiving part of the presynaptic neuron, while axon is the transmitting part of the neuron. So, after initiation, action potentials travel down axons to the terminals. Action potential travels through the membrane of the presynaptic cell causing the voltage-gated channels permeable to calcium ions to open. Ca2+ flow through the presynaptic membrane and increase the Ca concentration in the cell which will activate proteins attached to vesicles that contain a neurotransmitter (e.g. acetylcholine). Vesicles fuse with the membrane of the presynaptic cell, thereby release their contents into the synaptic cleft-space between the membranes of the pre- and postsynaptic cells (exocytosis of the vesicle's content). Neurotransmitter ACh (from the vesicles) binds to its receptors on the postsynaptic membrane and its binding causes depolarization of the target cell (muscle cell). Depolarization occurs because sodium enters the cell as a result of neurotransmitter receptor binding.

6 0
3 years ago
With the endosymbiotic hypothesis in mind, what structure within modern-day chloroplasts is likely derived from the cytoplasm of
777dan777 [17]

Inner membrane of the chloroplasts

Explanation:

The present day eukayrotes are all considered to be derived from its original ancestor – the cyanobacteria.

Earlier, photosynthesis by the first photoautotrophs took place utilizing hydrogen sulphide as the electron donor. However, it was later when the cyanobacteria, which were originally residing in the mitochondria of an eukaryotic cell under an endosymbiotic relationship, developed into true chloroplasts, the use of water as electron donor to perform photosynthesis began.  

The cyanobacteria were aerobic in nature and required oxygen to survive. They evolved the chloroplasts covered with an external protective membrane and an internal membrane. It is the internal membrane which contains all the necessary organelles or components necessary for photosynthesis like thyllakoids, stroma etc which helped them to utilize water as an electron donor during photosynthesis like all the eukaryotes.  

4 0
2 years ago
What is a gamete, exactly?
astra-53 [7]

A Gamete is a sex cell, this is a cell whose genes can be pass to future generations, and is hapliod is defferent to every other cell in your body because every cell in your body has 46 chromosomes 23 from your dad and 23 from your mom, but this cell has only 23, to be able to pass it to your childrens. This are your sperm for males and eggs for females.

6 0
2 years ago
Which natural polymer contains 3,000 or more glucose monomers?
zysi [14]

Answer:

Cellulose

Explanation:

Cellulose is a carbohydrate (made up of carbon and and hydrogen atoms). This is common component of cotton and wood. It is also a major component of plant cell walls Cellulose is a polymer that is composed of 3000 or more than 3000 glucose monomers linked together through β(1→4) D-linkage.

It is considered to be one of the most abundant polymers of organic nature on the earth.

  • It has a number of commercial uses like:
  • Manufacturing of paper and paper based products.
  • In scientific labs for conducting thin layer chromatography.
  • Manufacture of textile for clothings.
  • Manufacturing of biofuels and pharmaceuticals.

Hope it help

6 0
2 years ago
During which phase of meiosis are sister chromatids separated and pulled to opposite sides of the cell?
just olya [345]

Answer:

Anaphase of meiosis II

Explanation:

During Anaphase II, the spindle fibers pull the sister chromatids apart, toward the opposite poles of the cell. I recommend searching Anaphase II up and looking at a picture. It will give you a better visual understanding.

4 0
3 years ago
Other questions:
  • A formal decision by a governing body is known as a(n) ___________. A. amendment B. resolution C. catayst D. contingent Please s
    6·2 answers
  • Which atmospheric gas is being described a noble gas makes up approximately 1% of the atmosphere
    6·1 answer
  • Which location shown on the diagram identifies Earth's hottest layer?
    13·1 answer
  • what is the ecosystem of fungi, what is the ecosystem of snails, what is the ecosystem of earthworms, what is the ecosystem of a
    8·2 answers
  • Can you guys please help me I have a test tomorrow
    11·1 answer
  • A researcher claims that a newly discovered microorganism is an autotroph. Which observation would support his claim?
    13·1 answer
  • Which shows the correct compliment to the following DNA strand. A-T-
    10·1 answer
  • CV 7 Raja wanted to investigate how the amount of light affects the growth of a type of plant. The diagram below shows each of h
    10·1 answer
  • Write a three paragraph essay about AIDS. Include the following topics in your essay:
    7·1 answer
  • What is the catalyst for photosynthesis?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!