All categories

2 years ago

How are fish with backbones inside their bodies classified? a.crustaceans b.cephalopods c.mollusks d.finfish e.shellfish

Biology

2 answers:

Mariulka [41]2 years ago

6 0

Answer:

D. Finfish

Explanation:

Finfishes are the true fishes and have fins and backbone. Finfishes include jawless fishes (Agnatha), cartilagenous fishes (Chondrichthyes) and bony fishes (osteichthyes). Crustaceans and mollusks are invertebrates and together make the group called as "shellfish". They lack backbone.

Romashka [77]2 years ago

4 0

D. Finfish is the correct answer.

You might be interested in

Chromosomes contain __________. chromosomes contain __________. one type of macromolecule: nucleic acid no macromolecules, just

Nitella [24]

<span>Two types of macromolecules: nucleic acid and protein. Chromosomes are how the DNA is stored so they primarily contain nucleic acids. In addition to properly organize and condense the DNA, proteins are required. These include histones and other proteins.</span>

6 0

2 years ago

Rutherford tracked the motion of tiny, positively charged particles shot through a thin sheet of gold foil. Some particles trave

Marrrta [24]

Answer:

Some particles traveled through empty parts of the atom and some particles were deflected by small areas of high-density positive charge in atoms.

Explanation:

Rutherford concluded from his experiment that there are empty spaces present in most parts of the atom while a heavy positive charge is present in the nucleus of an atom due to which the tiny positively charged particles deflects because of positive-positive charge repulsion. Most of positively charged particles passes undeflected which indicated the presence of empty spaces in the atoms. The electrons revolve around the nucleus have no effect on the deflection of positively charged particles.

3 0

2 years ago

Read 2 more answers

Determine the median value for foot width for males and for females. Describe in complete sentences the method you used to deter

Ipatiy [6.2K]

Answer:

This question is incomplete because of the absence of the data referred to in the question

Explanation:

This question is incomplete but the data referred to in the question is attached below

In order to determine the median value of any set of data, the data is first of all rearranged chronologically (ascending) and then the middle value is picked if the number of data is odd but if the number of data is even, the two middle values are added together and then divided by two to get the median.

From the data provided, the values (which are 10 in number) can be arranged as shown below (with the median values in bold)

Females: 5, 7, 7, 7.5, 7.5, 7.8, 7.8, 8, 8, 17

Males: 4.5, 7.5, 9, 9, 9.2, 9.3, 10, 10, 10.5, 13

Since the number of data is even, the two middle numbers (in bold) shall be added together and then divided to get the median as shown below

The median value for the females foot width is = 7.5 + 7.8/2 = 7.65 cm

The median value for the male foot width is = 9.2 + 9.3/2 = 9.25 cm

4 0

2 years ago

The central dogma describes how the genes in the nucleus work to produce an organism's phenotype. another way of putting it is t

77julia77 [94]

Due to the definition of the central dogma, another way of putting it is that the central dogma follows the flow of information from DNA to protein.

7 0

2 years ago

A motor unit is Group of answer choices 1. many myofibrils in a sarcolemma. 2. many motor end plates at a neuromuscular junction

Vladimir [108]

Answer:

A motor unit is a group of MOTOR NEURON and the MUSCLE FIBERS connected to it.

Explanation:

Neuron is the structural and functional unit of nervous system.

Motor unit consists of a motor neuron and the skeletal muscles innervated by the terminals of the neuron.

Several associated motor units called motor pool coordinates together the contractions of a single muscle.

That is, the activation of a motor unit leads to the contraction of all the muscle fibers attached to it.

3 0

2 years ago