All categories

3 years ago

Which animal has a single-loop circulation? A. human B. fish C. housefly D. earthworm E. octopus

Biology

2 answers:

Inga [223]3 years ago

6 0

the answer would be B. fish

have a wonderful day

Masja [62]3 years ago

3 0

The correct answer is; B. fish

Fish have a single loop circulation.

Single loop circulation is the type of circulatory system that occur in fishes. Single loop circulation is simple. There is passage of blood only once through the heart in each complete cycle of the body. The blood flows from the heart through the gills, through the body and back to the heart. In single loop circulation, blood pressure is limited because of the frail nature of the tiny capillaries in the gills.

You might be interested in

A machine called os used for both harvesting and threshing

Bess [88]

Answer:

<h2>combine harvester</h2>

Explanation:

hope this helps you!!

4 0

2 years ago

Read 2 more answers

Please help me with this biology thing.

OverLord2011 [107]

Answer:

Answer:

a)dd

b) dd

c) 0%

a) 25%

b) 75%

c) 25%

a) 03

b) 0

c) tt

a) FF x ff OR FF x Ff OR FF x FF

b) Because all the children have freckles

3 0

2 years ago

What is the function of helicase in dna replication? see concept 16.2 (page 322)?

Salsk061 [2.6K]

The function of Helicase in the process of DNA replication is to untwist the double helix and separating the two DNA strands. This action of helicase creates the replication forks and replication bubbles where the process of replication is initiated. Their main role is the separation of double-stranded DNA into single strands allowing each strand to be copied during the process of replication. It may also function in other cellular processes where the double-stranded DNA must be separated, including transcription and repair.

4 0

3 years ago

Cellular respiration map

nexus9112 [7]

Explanation:

Respiration in the mitochondria utilizes oxygen for the production of ATP in the Krebs’ or Citric acid cycle via the oxidization of pyruvate (through the process of glycolysis in the cytoplasm).

overall: C6H12O6 (glucose) + 6 O2 → 6 CO2 + 6 H2O + ≈38 ATP

Further Explanation:

In all eukaryotic cells, mitochondria are small cellular organelles bound by membranes, these make most of the chemical energy required for powering the biochemical reactions within the cell. This chemical energy is stored within the molecule ATP which is produced.

Oxidative phosphorylation follows; this is a process in which the NADH and FADH2 made in previous steps of respiration process give up electrons in the electron transport chain these are converted it to their previous forms, NADH+ and FAD. Electrons continue to move down the chain the energy they release is used in pumping protons out of the matrix of the mitochondria.

This forms a gradient where there is a differential in the number of protons on either side of the membrane the protons flow or re-enter the matrix through the enzyme ATP synthase, which makes the energy storage molecules of ATP from the reduction of ADP. At the end of the electron transport, three molecules of oxygen accept electrons and protons to form molecules of water...

Glycolysis: occurs in the cytoplasm. 2 molecules of ATP are used to cleave glucose into 2 pyruvates, 4 ATP and 2 electron carrying NADH molecules. (2 ATP are utilized for a net ATP of 2)

The Citric acid or Kreb's cycle: in the mitochondrial matrix- 6 molecules of CO2 are produced by combining oxygen and the carbon within pyruvate, 2 ATP oxygen molecules, 8 NADH and 2 FADH2.
The electron transport chain, ETC: in the inner mitochondrial membrane, 34 ATP, electrons combine with H+ split from 10 NADH, 4 FADH2, renewing the number of electron acceptors and 3 oxygen; this forms 6 H2O, 10 NAD+, 4 FAD.

Learn more about cellular life at brainly.com/question/11259903

Learn more about cellular respiration at brainly.com/question/11203046

#LearnWithBrainly

7 0

3 years ago

Two phenotypically normal parents have a child with CF. i. What are the genotypes of each parent? ii. What is the probability th

katen-ka-za [31]

To first dive into your question, here are some vocabulary terms that I will be using and will be helpful to you as well.

Homozygous dominant (BB): Is not affected by cystic fibrosis.
Homozygous recessive (bb): Is affected by cystic fibrosis.
Heterozygous (Bb): A carrier for cystic fibrosis.
Phenotype (Ex: Having cystic fibrosis): The appearance of an allele pair.
Genotype (Ex: bb): The genetic makeup of an allele pair.

We know that if both of the parents are phenotypically normal, there is no way that they can be homozygous recessive (bb), or have cystic fibrosis. We also know that since they have a child with this disease, they can't be homozygous dominant (BB) either. This means that both parents have to be carriers (Bb) in order for them to have a child with cystic fibrosis.

Below I have attached a Punnett square with both of the heterozygous parents.

Each child they have will have a 1/4 or 25% chance of having cystic fibrosis.

5 0

2 years ago